mcs/class/System.Data/System.Data/DataColumnChangeEventArgs.cs

   1 //
   2 // System.Data.DataColumnChangeEventArgs.cs
   3 //
   4 // Author:
   5 //   Christopher Podurgiel (cpodurgiel@msn.com)
   6 //
   7 // (C) Chris Podurgiel
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34
  35 namespace System.Data
  36 {
  37         /// <summary>
  38         /// Provides data for the ColumnChanging event.
  39         /// </summary>
  40         public class DataColumnChangeEventArgs : EventArgs
  41         {
  42                 #region Fields
  43
  44                 private DataColumn _column = null;
  45                 private DataRow _row = null;
  46                 private object _proposedValue = null;
  47
  48                 #endregion // Fields
  49
  50                 #region Constructors
  51
  52                 /// <summary>
  53                 /// Initializes a new instance of the DataColumnChangeEventArgs class.
  54                 /// </summary>
  55                 /// <param name="row"></param>
  56                 /// <param name="column"></param>
  57                 /// <param name="value"></param>
  58                 public DataColumnChangeEventArgs(DataRow row, DataColumn column, object value)
  59                 {
  60                         Initialize(row, column, value);
  61                 }
  62
  63                 internal DataColumnChangeEventArgs()
  64                 {
  65                 }
  66
  67                 #endregion // Constructors
  68
  69                 #region Properties
  70
  71                 /// <summary>
  72                 /// Gets the DataColumn with a changing value.
  73                 /// </summary>
  74                 public DataColumn Column
  75                 {
  76                         get
  77                         {
  78                                 return _column;
  79                         }
  80                 }
  81
  82
  83                 /// <summary>
  84                 /// Gets or sets the proposed new value for the column.
  85                 /// </summary>
  86                 public object ProposedValue
  87                 {
  88                         get
  89                         {
  90                                 return _proposedValue;
  91                         }
  92                         set
  93                         {
  94                                 _proposedValue = value;
  95                         }
  96                 }
  97
  98
  99                 /// <summary>
 100                 /// Gets the DataRow of the column with a changing value.
 101                 /// </summary>
 102                 public DataRow Row
 103                 {
 104                         get
 105                         {
 106                                 return _row;
 107                         }
 108                 }
 109
 110                 #endregion // Properties
 111
 112                 #region Methods
 113
 114                 internal void Initialize(DataRow row, DataColumn column, object value)
 115                 {
 116                         _column = column;
 117                         _row = row;
 118                         _proposedValue = value;
 119                 }
 120
 121                 #endregion // Methods
 122         }
 123 }