mcs/class/System.Data/System.Data/DataRelationPropertyDescriptor.cs

   1 using System;\r
   2 using System.ComponentModel;\r
   3 \r
   4 namespace System.Data\r
   5 {\r
   6         internal class DataRelationPropertyDescriptor : PropertyDescriptor\r
   7         {\r
   8                 #region Fields\r
   9 \r
  10                 DataRelation _relation;\r
  11 \r
  12                 #endregion // Fields\r
  13 \r
  14                 #region Constructors\r
  15 \r
  16                 internal DataRelationPropertyDescriptor(DataRelation relation) : base(relation.RelationName,null)\r
  17                 {\r
  18                         _relation = relation;\r
  19                 }\r
  20 \r
  21                 #endregion // Constructors\r
  22 \r
  23                 #region Properties\r
  24 \r
  25                 public override Type ComponentType \r
  26                 { \r
  27                         get {\r
  28                                 return typeof(DataRowView);\r
  29                         }\r
  30                 }\r
  31 \r
  32                 public override bool IsReadOnly \r
  33                 { \r
  34                         get {\r
  35                                 return false;\r
  36                         }\r
  37                 }\r
  38 \r
  39                 public override Type PropertyType \r
  40                 { \r
  41                         get {\r
  42                                 return typeof(IBindingList);\r
  43                         }\r
  44                 }\r
  45 \r
  46                 public DataRelation Relation \r
  47                 { \r
  48                         get {\r
  49                                 return _relation;\r
  50                         }\r
  51                 }\r
  52 \r
  53                 #endregion // Properties\r
  54 \r
  55                 #region Methods\r
  56 \r
  57                 public override bool CanResetValue(object obj)\r
  58                 {\r
  59                         return false;\r
  60                 }\r
  61 \r
  62                 public override bool Equals(object obj)\r
  63                 {\r
  64                         DataRelationPropertyDescriptor descriptor = obj as DataRelationPropertyDescriptor;\r
  65 \r
  66                         if (descriptor == null) {\r
  67                                 return false;\r
  68                         }\r
  69 \r
  70                         return (Relation == descriptor.Relation);\r
  71                 }\r
  72 \r
  73                 public override int GetHashCode()\r
  74                 {\r
  75                         return _relation.GetHashCode();\r
  76                 }\r
  77 \r
  78         public override object GetValue(object obj)\r
  79                 {\r
  80                         DataRowView dr = (DataRowView)obj;\r
  81                         return dr.CreateChildView(Relation);\r
  82                 }\r
  83 \r
  84                 public override void ResetValue(object obj)\r
  85                 {\r
  86                 }\r
  87 \r
  88                 public override void SetValue(object obj, object val)\r
  89                 {\r
  90                 }\r
  91 \r
  92                 public override bool ShouldSerializeValue(object obj)\r
  93                 {\r
  94                         return false;\r
  95                 }\r
  96 \r
  97                 #endregion // Methods\r
  98         }\r
  99 }\r