DataColumnCollection.CollectionChanged Event
.NET Framework 3.0
Occurs when the columns collection changes, either by adding or removing a column.
Namespace: System.Data
Assembly: System.Data (in system.data.dll)
Assembly: System.Data (in system.data.dll)
'Declaration Public Event CollectionChanged As CollectionChangeEventHandler 'Usage Dim instance As DataColumnCollection Dim handler As CollectionChangeEventHandler AddHandler instance.CollectionChanged, handler
/** @event */ public void add_CollectionChanged (CollectionChangeEventHandler value) /** @event */ public void remove_CollectionChanged (CollectionChangeEventHandler value)
In JScript, you can handle the events defined by a class, but you cannot define your own.
Not applicable.
The following example adds an event handler for the CollectionChanged event.
Private Sub AddEventHandler(table As DataTable) Dim columns As DataColumnCollection = table.Columns AddHandler columns.CollectionChanged, _ AddressOf ColumnsCollection_Changed End Sub Private Sub ColumnsCollection_Changed _ (sender As Object, e As System.ComponentModel. _ CollectionChangeEventArgs) Dim columns As DataColumnCollection = _ CType(sender, DataColumnCollection) Console.WriteLine("ColumnsCollectionChanged: " _ & columns.Count.ToString()) End Sub
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.Community Additions
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