Shedules fix
This commit is contained in:
vfedosevich
parent
645229bef1
commit
476f7a2b19
7 changed files with 461 additions and 542 deletions
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@ -36,11 +36,11 @@ using WebsitePanel.Providers;
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namespace WebsitePanel.EnterpriseServer
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{
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/// <summary>
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/// Summary description for ObjectUtils.
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/// </summary>
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public class ObjectUtils
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{
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/// <summary>
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/// Summary description for ObjectUtils.
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/// </summary>
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public class ObjectUtils
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{
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public static DT ConvertObject<ST, DT>(ST so)
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{
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Dictionary<string, PropertyInfo> sProps = GetTypePropertiesHash(typeof(ST));
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@ -53,23 +53,23 @@ namespace WebsitePanel.EnterpriseServer
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{
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if (dProps.ContainsKey(propName) && sProps[propName].Name != "Item")
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{
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if (sProps[propName].CanRead)
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{
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object val = sProps[propName].GetValue(so, null);
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if (dProps[propName] != null)
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{
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if (val != null && dProps[propName].CanWrite)
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{
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dProps[propName].SetValue(dobj, val, null);
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}
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}
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}
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if (sProps[propName].CanRead)
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{
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object val = sProps[propName].GetValue(so, null);
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if (dProps[propName] != null)
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{
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if (val != null && dProps[propName].CanWrite)
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{
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dProps[propName].SetValue(dobj, val, null);
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}
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}
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}
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}
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}
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return dobj;
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}
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private static Hashtable typeProperties = new Hashtable();
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private static Hashtable typeProperties = new Hashtable();
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public static Hashtable GetObjectProperties(object obj, bool persistentOnly)
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{
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@ -82,7 +82,7 @@ namespace WebsitePanel.EnterpriseServer
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{
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// check for persistent attribute
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object[] attrs = prop.GetCustomAttributes(typeof(PersistentAttribute), false);
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if (!persistentOnly || (persistentOnly && attrs.Length > 0))
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if (!persistentOnly || (persistentOnly && attrs.Length > 0) && !hash.ContainsKey(prop.Name))
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{
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object val = prop.GetValue(obj, null);
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string s = "";
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@ -110,60 +110,60 @@ namespace WebsitePanel.EnterpriseServer
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return hash;
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}
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public static void FillCollectionFromDataSet<T>(List<T> list, DataSet ds)
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{
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if(ds.Tables.Count == 0)
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return;
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public static void FillCollectionFromDataSet<T>(List<T> list, DataSet ds)
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{
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if (ds.Tables.Count == 0)
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return;
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FillCollectionFromDataView<T>(list, ds.Tables[0].DefaultView);
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}
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}
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public static void FillCollectionFromDataView<T>(List<T> list, DataView dv)
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{
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{
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Type type = typeof(T);
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PropertyInfo[] props = GetTypeProperties(type);
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PropertyInfo[] props = GetTypeProperties(type);
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foreach(DataRowView dr in dv)
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{
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// create an instance
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T obj = (T)Activator.CreateInstance(type);
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list.Add(obj);
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foreach (DataRowView dr in dv)
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{
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// create an instance
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T obj = (T)Activator.CreateInstance(type);
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list.Add(obj);
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// fill properties
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for(int i = 0; i < props.Length; i++)
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{
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string propName = props[i].Name;
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if(dv.Table.Columns[propName] == null)
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continue;
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// fill properties
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for (int i = 0; i < props.Length; i++)
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{
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string propName = props[i].Name;
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if (dv.Table.Columns[propName] == null)
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continue;
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object propVal = dr[propName];
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if(propVal == DBNull.Value)
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props[i].SetValue(obj, GetNull(props[i].PropertyType), null);
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else
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{
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try
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{
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// try implicit type conversion
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props[i].SetValue(obj, propVal, null);
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}
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catch
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{
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// convert to string and then set property value
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try
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{
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string strVal = propVal.ToString();
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props[i].SetValue(obj, Cast(strVal, props[i].PropertyType), null);
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}
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catch
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{
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// skip property init
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}
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}
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}
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} // for properties
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} // for rows
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}
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object propVal = dr[propName];
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if (propVal == DBNull.Value)
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props[i].SetValue(obj, GetNull(props[i].PropertyType), null);
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else
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{
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try
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{
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// try implicit type conversion
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props[i].SetValue(obj, propVal, null);
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}
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catch
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{
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// convert to string and then set property value
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try
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{
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string strVal = propVal.ToString();
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props[i].SetValue(obj, Cast(strVal, props[i].PropertyType), null);
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}
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catch
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{
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// skip property init
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}
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}
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}
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} // for properties
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} // for rows
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}
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public static List<T> CreateListFromDataReader<T>(IDataReader reader)
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{
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@ -179,201 +179,201 @@ namespace WebsitePanel.EnterpriseServer
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return list;
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}
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public static void FillCollectionFromDataReader<T>(List<T> list, IDataReader reader)
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{
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public static void FillCollectionFromDataReader<T>(List<T> list, IDataReader reader)
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{
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Type type = typeof(T);
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try
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{
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// get type properties
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PropertyInfo[] props = GetTypeProperties(type);
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try
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{
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// get type properties
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PropertyInfo[] props = GetTypeProperties(type);
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// iterate through reader
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while(reader.Read())
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{
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T obj = (T)Activator.CreateInstance(type);
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list.Add(obj);
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// iterate through reader
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while (reader.Read())
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{
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T obj = (T)Activator.CreateInstance(type);
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list.Add(obj);
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// set properties
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for(int i = 0; i < props.Length; i++)
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{
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string propName = props[i].Name;
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try
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{
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// set properties
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for (int i = 0; i < props.Length; i++)
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{
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string propName = props[i].Name;
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object propVal = reader[propName];
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if(propVal == DBNull.Value)
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props[i].SetValue(obj, GetNull(props[i].PropertyType), null);
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else
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{
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try
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{
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// try implicit type conversion
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props[i].SetValue(obj, propVal, null);
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}
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try
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{
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object propVal = reader[propName];
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if (propVal == DBNull.Value)
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props[i].SetValue(obj, GetNull(props[i].PropertyType), null);
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else
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{
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try
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{
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// try implicit type conversion
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props[i].SetValue(obj, propVal, null);
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}
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catch (Exception ex)
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{
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// convert to string and then set property value
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try
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{
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string strVal = propVal.ToString();
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props[i].SetValue(obj, Cast(strVal, props[i].PropertyType), null);
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}
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catch(Exception e)
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{
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// skip property init
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}
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}
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}
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}
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{
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// convert to string and then set property value
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try
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{
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string strVal = propVal.ToString();
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props[i].SetValue(obj, Cast(strVal, props[i].PropertyType), null);
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}
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catch (Exception e)
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{
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// skip property init
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}
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}
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}
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}
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catch (Exception e) { } // just skip
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} // for properties
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}
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}
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finally
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{
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reader.Close();
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}
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}
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} // for properties
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}
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}
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finally
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{
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reader.Close();
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}
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}
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public static T FillObjectFromDataView<T>(DataView dv)
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{
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public static T FillObjectFromDataView<T>(DataView dv)
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{
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Type type = typeof(T);
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T obj = default(T);
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T obj = default(T);
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// get type properties
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PropertyInfo[] props = GetTypeProperties(type);
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// get type properties
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PropertyInfo[] props = GetTypeProperties(type);
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// iterate through reader
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foreach(DataRowView dr in dv)
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{
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obj = (T)Activator.CreateInstance(type);
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// iterate through reader
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foreach (DataRowView dr in dv)
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{
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obj = (T)Activator.CreateInstance(type);
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// set properties
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for(int i = 0; i < props.Length; i++)
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{
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string propName = props[i].Name;
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try
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{
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// verify if there is such a column
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if (!dr.Row.Table.Columns.Contains(propName.ToLower()))
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{
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// if not, we move to another property
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// because this one we cannot set
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continue;
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}
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// set properties
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for (int i = 0; i < props.Length; i++)
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{
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string propName = props[i].Name;
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object propVal = dr[propName];
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if(propVal == DBNull.Value)
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props[i].SetValue(obj, GetNull(props[i].PropertyType), null);
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else
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{
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try
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{
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string strVal = propVal.ToString();
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try
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{
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// verify if there is such a column
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if (!dr.Row.Table.Columns.Contains(propName.ToLower()))
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{
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// if not, we move to another property
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// because this one we cannot set
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continue;
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}
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//convert to DateTime
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if (props[i].PropertyType.UnderlyingSystemType.FullName == typeof(DateTime).FullName)
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{
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DateTime date = DateTime.MinValue;
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if (DateTime.TryParse(strVal, out date))
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{
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props[i].SetValue(obj, date, null);
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}
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}
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else
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{
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//Convert generic
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props[i].SetValue(obj, Cast(strVal, props[i].PropertyType), null);
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}
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}
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catch
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{
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// skip property init
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}
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}
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}
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catch{} // just skip
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} // for properties
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}
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object propVal = dr[propName];
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if (propVal == DBNull.Value)
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props[i].SetValue(obj, GetNull(props[i].PropertyType), null);
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else
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{
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try
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{
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string strVal = propVal.ToString();
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return obj;
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}
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//convert to DateTime
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if (props[i].PropertyType.UnderlyingSystemType.FullName == typeof(DateTime).FullName)
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{
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DateTime date = DateTime.MinValue;
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if (DateTime.TryParse(strVal, out date))
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{
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props[i].SetValue(obj, date, null);
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}
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}
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else
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{
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//Convert generic
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props[i].SetValue(obj, Cast(strVal, props[i].PropertyType), null);
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}
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}
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catch
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{
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// skip property init
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}
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}
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}
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catch { } // just skip
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} // for properties
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}
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public static T FillObjectFromDataReader<T>(IDataReader reader)
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return obj;
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}
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public static T FillObjectFromDataReader<T>(IDataReader reader)
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{
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Type type = typeof(T);
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T obj = default(T);
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try
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{
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// get type properties
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PropertyInfo[] props = GetTypeProperties(type);
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try
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{
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// get type properties
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PropertyInfo[] props = GetTypeProperties(type);
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// iterate through reader
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while(reader.Read())
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{
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obj = (T)Activator.CreateInstance(type);
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// iterate through reader
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while (reader.Read())
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{
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obj = (T)Activator.CreateInstance(type);
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// set properties
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for(int i = 0; i < props.Length; i++)
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{
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string propName = props[i].Name;
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// set properties
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for (int i = 0; i < props.Length; i++)
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{
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string propName = props[i].Name;
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try
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{
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if (!IsColumnExists(propName, reader.GetSchemaTable()))
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{
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continue;
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}
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object propVal = reader[propName];
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if(propVal == DBNull.Value)
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props[i].SetValue(obj, GetNull(props[i].PropertyType), null);
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else
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{
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try
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{
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//try string first
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if (props[i].PropertyType.UnderlyingSystemType.FullName == typeof(String).FullName)
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{
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props[i].SetValue(obj, propVal.ToString(), null);
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}
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else
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{
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// then, try implicit type conversion
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props[i].SetValue(obj, propVal, null);
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}
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}
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catch
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{
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// convert to string and then set property value
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try
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{
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string strVal = propVal.ToString();
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props[i].SetValue(obj, Cast(strVal, props[i].PropertyType), null);
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}
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catch
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{
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// skip property init
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}
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}
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}
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}
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catch{} // just skip
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} // for properties
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}
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}
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finally
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{
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reader.Close();
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}
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try
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{
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if (!IsColumnExists(propName, reader.GetSchemaTable()))
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{
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continue;
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}
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object propVal = reader[propName];
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return obj;
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}
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if (propVal == DBNull.Value)
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props[i].SetValue(obj, GetNull(props[i].PropertyType), null);
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else
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{
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try
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{
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//try string first
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if (props[i].PropertyType.UnderlyingSystemType.FullName == typeof(String).FullName)
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{
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props[i].SetValue(obj, propVal.ToString(), null);
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}
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else
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{
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// then, try implicit type conversion
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props[i].SetValue(obj, propVal, null);
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}
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}
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catch
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{
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// convert to string and then set property value
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try
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{
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string strVal = propVal.ToString();
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props[i].SetValue(obj, Cast(strVal, props[i].PropertyType), null);
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}
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catch
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{
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// skip property init
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}
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}
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}
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}
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catch { } // just skip
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} // for properties
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}
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}
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finally
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{
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reader.Close();
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}
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return obj;
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}
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private static Hashtable propertiesCache = new Hashtable();
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|
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@ -384,7 +384,7 @@ namespace WebsitePanel.EnterpriseServer
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Hashtable propValues = new Hashtable();
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foreach (DataRowView dr in dv)
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{
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if (propValues[dr[nameColumn]] == null)
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if (propValues[dr[nameColumn]] == null && !propValues.ContainsKey(dr[nameColumn]))
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propValues.Add(dr[nameColumn], dr[valueColumn]);
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}
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|
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@ -398,7 +398,7 @@ namespace WebsitePanel.EnterpriseServer
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Hashtable propValues = new Hashtable();
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while (reader.Read())
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{
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if (propValues[reader[nameColumn]] == null)
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if (propValues[reader[nameColumn]] == null && !propValues.ContainsKey(reader[nameColumn]))
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propValues.Add(reader[nameColumn], reader[valueColumn]);
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}
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reader.Close();
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|
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@ -416,50 +416,54 @@ namespace WebsitePanel.EnterpriseServer
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return obj;
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}
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public static void CopyPersistentPropertiesFromSource<T>(T source, T target)
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where T : ServiceProviderItem
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{
|
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//
|
||||
var typeSource = source.GetType();
|
||||
var typeTarget = target.GetType();
|
||||
// get all property infos
|
||||
Hashtable props = null;
|
||||
if (propertiesCache[typeSource.Name] != null)
|
||||
{
|
||||
// load properties from cache
|
||||
props = (Hashtable)propertiesCache[typeSource.Name];
|
||||
}
|
||||
else
|
||||
{
|
||||
// create properties cache
|
||||
props = new Hashtable();
|
||||
//
|
||||
PropertyInfo[] objProps = typeSource.GetProperties(BindingFlags.Instance
|
||||
//| BindingFlags.DeclaredOnly
|
||||
| BindingFlags.Public);
|
||||
foreach (PropertyInfo prop in objProps)
|
||||
{
|
||||
// check for persistent attribute
|
||||
object[] attrs = prop.GetCustomAttributes(typeof(PersistentAttribute), false);
|
||||
// Persistent only
|
||||
if (attrs.Length > 0)
|
||||
{
|
||||
// add property to hash
|
||||
props.Add(prop.Name, prop);
|
||||
}
|
||||
}
|
||||
// add to cache
|
||||
propertiesCache.Add(typeSource.Name, props);
|
||||
}
|
||||
public static void CopyPersistentPropertiesFromSource<T>(T source, T target)
|
||||
where T : ServiceProviderItem
|
||||
{
|
||||
//
|
||||
var typeSource = source.GetType();
|
||||
var typeTarget = target.GetType();
|
||||
// get all property infos
|
||||
Hashtable props = null;
|
||||
if (propertiesCache[typeSource.Name] != null)
|
||||
{
|
||||
// load properties from cache
|
||||
props = (Hashtable)propertiesCache[typeSource.Name];
|
||||
}
|
||||
else
|
||||
{
|
||||
// create properties cache
|
||||
props = new Hashtable();
|
||||
//
|
||||
PropertyInfo[] objProps = typeSource.GetProperties(BindingFlags.Instance
|
||||
//| BindingFlags.DeclaredOnly
|
||||
| BindingFlags.Public);
|
||||
foreach (PropertyInfo prop in objProps)
|
||||
{
|
||||
// check for persistent attribute
|
||||
object[] attrs = prop.GetCustomAttributes(typeof(PersistentAttribute), false);
|
||||
// Persistent only
|
||||
if (attrs.Length > 0 && !props.ContainsKey(prop.Name))
|
||||
{
|
||||
// add property to hash
|
||||
props.Add(prop.Name, prop);
|
||||
}
|
||||
}
|
||||
|
||||
// Copy the data
|
||||
foreach (PropertyInfo propertyInfo in props.Values)
|
||||
{
|
||||
propertyInfo.SetValue(target, propertyInfo.GetValue(source, null), null);
|
||||
}
|
||||
}
|
||||
if (!propertiesCache.ContainsKey(typeSource.Name))
|
||||
{
|
||||
// add to cache
|
||||
propertiesCache.Add(typeSource.Name, props);
|
||||
}
|
||||
}
|
||||
|
||||
public static void CreateObjectFromHash(object obj, Hashtable propValues, bool persistentOnly)
|
||||
// Copy the data
|
||||
foreach (PropertyInfo propertyInfo in props.Values)
|
||||
{
|
||||
propertyInfo.SetValue(target, propertyInfo.GetValue(source, null), null);
|
||||
}
|
||||
}
|
||||
|
||||
public static void CreateObjectFromHash(object obj, Hashtable propValues, bool persistentOnly)
|
||||
{
|
||||
Type type = obj.GetType();
|
||||
|
||||
|
|
@ -481,15 +485,18 @@ namespace WebsitePanel.EnterpriseServer
|
|||
{
|
||||
// check for persistent attribute
|
||||
object[] attrs = prop.GetCustomAttributes(typeof(PersistentAttribute), false);
|
||||
if (!persistentOnly || (persistentOnly && attrs.Length > 0))
|
||||
if (!persistentOnly || (persistentOnly && attrs.Length > 0) && !props.ContainsKey(prop.Name))
|
||||
{
|
||||
// add property to hash
|
||||
props.Add(prop.Name, prop);
|
||||
}
|
||||
}
|
||||
|
||||
// add to cache
|
||||
propertiesCache.Add(type.Name, props);
|
||||
if (!propertiesCache.ContainsKey(type.Name))
|
||||
{
|
||||
// add to cache
|
||||
propertiesCache.Add(type.Name, props);
|
||||
}
|
||||
}
|
||||
|
||||
// fill properties
|
||||
|
|
@ -513,37 +520,37 @@ namespace WebsitePanel.EnterpriseServer
|
|||
else
|
||||
if (prop.PropertyType == typeof(long))
|
||||
prop.SetValue(obj, long.Parse(val), null);
|
||||
else
|
||||
if (prop.PropertyType == typeof(Boolean))
|
||||
prop.SetValue(obj, Boolean.Parse(val), null);
|
||||
else if (prop.PropertyType == typeof(Single))
|
||||
prop.SetValue(obj, Single.Parse(val), null);
|
||||
else if (prop.PropertyType.IsEnum)
|
||||
prop.SetValue(obj, Enum.Parse(prop.PropertyType, val, true), null);
|
||||
else
|
||||
if (prop.PropertyType == typeof(Guid))
|
||||
prop.SetValue(obj, new Guid(val), null);
|
||||
else
|
||||
if (prop.PropertyType == typeof(string[]))
|
||||
{
|
||||
if (val == "")
|
||||
prop.SetValue(obj, new string[0], null);
|
||||
else
|
||||
prop.SetValue(obj, val.Split(';'), null);
|
||||
}
|
||||
else if (prop.PropertyType == typeof(int[]))
|
||||
{
|
||||
string[] svals = val.Split(';');
|
||||
int[] ivals = new int[svals.Length];
|
||||
if (prop.PropertyType == typeof(Boolean))
|
||||
prop.SetValue(obj, Boolean.Parse(val), null);
|
||||
else if (prop.PropertyType == typeof(Single))
|
||||
prop.SetValue(obj, Single.Parse(val), null);
|
||||
else if (prop.PropertyType.IsEnum)
|
||||
prop.SetValue(obj, Enum.Parse(prop.PropertyType, val, true), null);
|
||||
else
|
||||
if (prop.PropertyType == typeof(Guid))
|
||||
prop.SetValue(obj, new Guid(val), null);
|
||||
else
|
||||
if (prop.PropertyType == typeof(string[]))
|
||||
{
|
||||
if (val == "")
|
||||
prop.SetValue(obj, new string[0], null);
|
||||
else
|
||||
prop.SetValue(obj, val.Split(';'), null);
|
||||
}
|
||||
else if (prop.PropertyType == typeof(int[]))
|
||||
{
|
||||
string[] svals = val.Split(';');
|
||||
int[] ivals = new int[svals.Length];
|
||||
|
||||
for (int i = 0; i < svals.Length; i++)
|
||||
ivals[i] = Int32.Parse(svals[i]);
|
||||
for (int i = 0; i < svals.Length; i++)
|
||||
ivals[i] = Int32.Parse(svals[i]);
|
||||
|
||||
if (val == "")
|
||||
ivals = new int[0];
|
||||
if (val == "")
|
||||
ivals = new int[0];
|
||||
|
||||
prop.SetValue(obj, ivals, null);
|
||||
}
|
||||
prop.SetValue(obj, ivals, null);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -553,50 +560,55 @@ namespace WebsitePanel.EnterpriseServer
|
|||
Dictionary<string, PropertyInfo> hash = new Dictionary<string, PropertyInfo>();
|
||||
PropertyInfo[] props = GetTypeProperties(type);
|
||||
foreach (PropertyInfo prop in props)
|
||||
hash.Add(prop.Name, prop);
|
||||
{
|
||||
if (!hash.ContainsKey(prop.Name))
|
||||
{
|
||||
hash.Add(prop.Name, prop);
|
||||
}
|
||||
}
|
||||
return hash;
|
||||
}
|
||||
|
||||
private static PropertyInfo[] GetTypeProperties(Type type)
|
||||
{
|
||||
string typeName = type.AssemblyQualifiedName;
|
||||
if(typeProperties[typeName] != null)
|
||||
return (PropertyInfo[])typeProperties[typeName];
|
||||
private static PropertyInfo[] GetTypeProperties(Type type)
|
||||
{
|
||||
string typeName = type.AssemblyQualifiedName;
|
||||
if (typeProperties[typeName] != null)
|
||||
return (PropertyInfo[])typeProperties[typeName];
|
||||
|
||||
PropertyInfo[] props = type.GetProperties(BindingFlags.Instance | BindingFlags.Public);
|
||||
typeProperties[typeName] = props;
|
||||
return props;
|
||||
}
|
||||
PropertyInfo[] props = type.GetProperties(BindingFlags.Instance | BindingFlags.Public);
|
||||
typeProperties[typeName] = props;
|
||||
return props;
|
||||
}
|
||||
|
||||
public static object GetNull(Type type)
|
||||
{
|
||||
if(type == typeof(string))
|
||||
return null;
|
||||
if(type == typeof(Int32))
|
||||
return 0;
|
||||
if(type == typeof(Int64))
|
||||
return 0;
|
||||
if(type == typeof(Boolean))
|
||||
return false;
|
||||
if(type == typeof(Decimal))
|
||||
return 0M;
|
||||
else
|
||||
return null;
|
||||
}
|
||||
public static object GetNull(Type type)
|
||||
{
|
||||
if (type == typeof(string))
|
||||
return null;
|
||||
if (type == typeof(Int32))
|
||||
return 0;
|
||||
if (type == typeof(Int64))
|
||||
return 0;
|
||||
if (type == typeof(Boolean))
|
||||
return false;
|
||||
if (type == typeof(Decimal))
|
||||
return 0M;
|
||||
else
|
||||
return null;
|
||||
}
|
||||
|
||||
public static object Cast(string val, Type type)
|
||||
{
|
||||
if(type == typeof(string))
|
||||
return val;
|
||||
if(type == typeof(Int32))
|
||||
return Int32.Parse(val);
|
||||
if(type == typeof(Int64))
|
||||
return Int64.Parse(val);
|
||||
if(type == typeof(Boolean))
|
||||
return Boolean.Parse(val);
|
||||
if(type == typeof(Decimal))
|
||||
return Decimal.Parse(val);
|
||||
if(type == typeof(string[]) && val != null)
|
||||
public static object Cast(string val, Type type)
|
||||
{
|
||||
if (type == typeof(string))
|
||||
return val;
|
||||
if (type == typeof(Int32))
|
||||
return Int32.Parse(val);
|
||||
if (type == typeof(Int64))
|
||||
return Int64.Parse(val);
|
||||
if (type == typeof(Boolean))
|
||||
return Boolean.Parse(val);
|
||||
if (type == typeof(Decimal))
|
||||
return Decimal.Parse(val);
|
||||
if (type == typeof(string[]) && val != null)
|
||||
{
|
||||
return val.Split(';');
|
||||
}
|
||||
|
|
@ -611,49 +623,49 @@ namespace WebsitePanel.EnterpriseServer
|
|||
iarr[i] = Int32.Parse(sarr[i]);
|
||||
return iarr;
|
||||
}
|
||||
else
|
||||
return val;
|
||||
}
|
||||
else
|
||||
return val;
|
||||
}
|
||||
|
||||
public static string GetTypeFullName(Type type)
|
||||
{
|
||||
return type.FullName + ", " + type.Assembly.GetName().Name;
|
||||
}
|
||||
public static string GetTypeFullName(Type type)
|
||||
{
|
||||
return type.FullName + ", " + type.Assembly.GetName().Name;
|
||||
}
|
||||
|
||||
|
||||
#region Helper Functions
|
||||
#region Helper Functions
|
||||
|
||||
/// <summary>
|
||||
/// This function is used to determine whether IDataReader contains a Column.
|
||||
/// </summary>
|
||||
/// <param name="columnName">Name of the column.</param>
|
||||
/// <param name="schemaTable">The schema <see cref="DataTable"/> that decribes result-set <see cref="IDataReader"/> contains.</param>
|
||||
/// <returns>True, when required column exists in the <paramref name="schemaTable"/>. Otherwise, false.</returns>
|
||||
/// <remark>
|
||||
/// The followin example shows how to look for the "Role" column in the <see cref="IDataReader"/>.
|
||||
/// <example>
|
||||
/// IDataReader reader = ....
|
||||
/// if (!IsColumnExists("Role", reader.GetSchemaTable())
|
||||
/// {
|
||||
/// continue;
|
||||
/// }
|
||||
///
|
||||
/// object roleValue = reader["Role"];
|
||||
/// </example>
|
||||
/// </remark>
|
||||
static bool IsColumnExists(string columnName, DataTable schemaTable)
|
||||
{
|
||||
foreach (DataRow row in schemaTable.Rows)
|
||||
{
|
||||
if (String.Compare(row[0].ToString(), columnName, StringComparison.OrdinalIgnoreCase) == 0)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
}
|
||||
/// <summary>
|
||||
/// This function is used to determine whether IDataReader contains a Column.
|
||||
/// </summary>
|
||||
/// <param name="columnName">Name of the column.</param>
|
||||
/// <param name="schemaTable">The schema <see cref="DataTable"/> that decribes result-set <see cref="IDataReader"/> contains.</param>
|
||||
/// <returns>True, when required column exists in the <paramref name="schemaTable"/>. Otherwise, false.</returns>
|
||||
/// <remark>
|
||||
/// The followin example shows how to look for the "Role" column in the <see cref="IDataReader"/>.
|
||||
/// <example>
|
||||
/// IDataReader reader = ....
|
||||
/// if (!IsColumnExists("Role", reader.GetSchemaTable())
|
||||
/// {
|
||||
/// continue;
|
||||
/// }
|
||||
///
|
||||
/// object roleValue = reader["Role"];
|
||||
/// </example>
|
||||
/// </remark>
|
||||
static bool IsColumnExists(string columnName, DataTable schemaTable)
|
||||
{
|
||||
foreach (DataRow row in schemaTable.Rows)
|
||||
{
|
||||
if (String.Compare(row[0].ToString(), columnName, StringComparison.OrdinalIgnoreCase) == 0)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
#endregion
|
||||
}
|
||||
}
|
||||
#endregion
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue