OnAfterExpand Method

Called after a node is Expanded

Syntax

Visual Basic

'Declaration
 
Protected Overridable Sub OnAfterExpand( _
   ByVal e As NodeEventArgs _
) 

C#

protected virtual void OnAfterExpand( 
   NodeEventArgs e
)

Parameters

e

An System.EventArgs that contains the event data.

Example

The following sample code illustrates some of the information available in the AfterExpand event.

For an overview of how to handle events in Visual Basic or Visual C#, see Event Handlers in Visual Basic and Visual C#. For specific information and code examples illustrating how to consume events in your application, see Consuming Events in the .NET Framework Developer's Guide.

Visual Basic

Private Sub ultraTree1_AfterExpand(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinTree.NodeEventArgs) Handles ultraTree1.AfterExpand

    Dim sb As New System.Text.StringBuilder()

    sb.Append("Node: ")
    sb.Append(e.TreeNode.Key)
    sb.Append(" has been expanded.")

    Debug.WriteLine(sb.ToString())

    ' Call BringIntoView passing 'true' for the 'includeChildNodes'
    ' parameter will bring the node and all of its child nodes
    ' into view
    e.TreeNode.BringIntoView(True)

End Sub

C#

private void ultraTree1_AfterExpand(object sender, Infragistics.Win.UltraWinTree.NodeEventArgs e)
{

	System.Text.StringBuilder sb = new System.Text.StringBuilder();

	sb.Append("Node: ");
	sb.Append(e.TreeNode.Key);
	sb.Append(" has been expanded.");

	Debug.WriteLine( sb.ToString() );

	// Call BringIntoView passing 'true' for the 'includeChildNodes'
	// parameter will bring the node and all of its child nodes
	// into view
	e.TreeNode.BringIntoView(true);
		
}

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2