ListChangedEventArgs Class
Provides data for the ListChanged event.
Assembly: System (in System.dll)
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The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: SharedState. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes. |
A ListChanged event is raised when the data in an IBindingList changes.
The NewIndex property indicates the index of the item that was added, changed, or deleted. If an item was moved, the NewIndex property indicates the new location of the item and the OldIndex property indicates the old location.
If only one item is affected by a change, the OldIndex property value is -1.
The following code example demonstrates the use of this type. In the example, an event handler reports on the occurrence of the BindingSource.ListChanged event. This report helps you to learn when the event occurs and can assist you in debugging. To report on multiple events or on events that occur frequently, consider replacing MessageBox.Show with Console.WriteLine or appending the message to a multiline TextBox.
To run the example code, paste it into a project that contains an instance of type BindingSource named BindingSource1. Then ensure that the event handler is associated with the BindingSource.ListChanged event.
Private Sub BindingSource1_ListChanged(sender as Object, e as ListChangedEventArgs) _ Handles BindingSource1.ListChanged Dim messageBoxVB as New System.Text.StringBuilder() messageBoxVB.AppendFormat("{0} = {1}", "ListChangedType", e.ListChangedType) messageBoxVB.AppendLine() messageBoxVB.AppendFormat("{0} = {1}", "NewIndex", e.NewIndex) messageBoxVB.AppendLine() messageBoxVB.AppendFormat("{0} = {1}", "OldIndex", e.OldIndex) messageBoxVB.AppendLine() messageBoxVB.AppendFormat("{0} = {1}", "PropertyDescriptor", e.PropertyDescriptor) messageBoxVB.AppendLine() MessageBox.Show(messageBoxVB.ToString(),"ListChanged Event") End Sub
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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