mcs/class/referencesource/System.Data/System/Data/DataTablePropertyDescriptor.cs

   1 //------------------------------------------------------------------------------
   2 // <copyright file="DataTablePropertyDescriptor.cs" company="Microsoft">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 // <owner current="true" primary="true">Microsoft</owner>
   6 // <owner current="true" primary="false">Microsoft</owner>
   7 // <owner current="false" primary="false">Microsoft</owner>
   8 //------------------------------------------------------------------------------
   9
  10 namespace System.Data {
  11     using System;
  12     using System.ComponentModel;
  13
  14     internal sealed class DataTablePropertyDescriptor : PropertyDescriptor {
  15
  16         DataTable table;
  17
  18         public DataTable Table {
  19             get {
  20                 return table;
  21             }
  22         }
  23
  24         internal DataTablePropertyDescriptor(DataTable dataTable) : base(dataTable.TableName, null) {
  25             this.table = dataTable;
  26         }
  27
  28         public override Type ComponentType {
  29             get {
  30                 return typeof(DataRowView);
  31             }
  32         }
  33
  34         public override bool IsReadOnly {
  35             get {
  36                 return false;
  37             }
  38         }
  39
  40         public override Type PropertyType {
  41             get {
  42                 return typeof(IBindingList);
  43             }
  44         }
  45
  46         public override bool Equals(object other) {
  47             if (other is DataTablePropertyDescriptor) {
  48                 DataTablePropertyDescriptor descriptor = (DataTablePropertyDescriptor) other;
  49                 return(descriptor.Table == Table);
  50             }
  51             return false;
  52         }
  53
  54         public override Int32 GetHashCode() {
  55             return Table.GetHashCode();
  56         }
  57
  58         public override bool CanResetValue(object component) {
  59             return false;
  60         }
  61
  62         public override object GetValue(object component) {
  63             DataViewManagerListItemTypeDescriptor dataViewManagerListItem = (DataViewManagerListItemTypeDescriptor) component;
  64             return dataViewManagerListItem.GetDataView(table);
  65         }
  66
  67         public override void ResetValue(object component) {
  68         }
  69
  70         public override void SetValue(object component, object value) {
  71         }
  72
  73         public override bool ShouldSerializeValue(object component) {
  74             return false;
  75         }
  76     }
  77 }
  78