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.NET and JavaScript UI Controls
Version 24.2 (latest)

ValidateLabelEditEventArgs Class

Event parameters used for the BeforeLabelEdit event
Syntax
public class ValidateLabelEditEventArgs : System.ComponentModel.CancelEventArgs
Example
The following sample code illustrates some of the information available in the ValidateLabelEdit 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.

Imports Infragistics.Win.UltraWinTree

Private Sub ultraTree1_ValidateLabelEdit(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinTree.ValidateLabelEditEventArgs) Handles ultraTree1.ValidateLabelEdit

    Dim tree As Infragistics.Win.UltraWinTree.UltraTree

    tree = sender

    Dim sb As New System.Text.StringBuilder()

    sb.Append("Node: ")
    sb.Append(tree.ActiveNode.Key)

    sb.Append("'s text is being changed to: ")
    sb.Append(e.LabelEditText)

    Dim dr As DialogResult
    dr = MessageBox.Show(Me, _
      sb.ToString(), _
      "Node text changing", _
      MessageBoxButtons.OKCancel)


    If dr = DialogResult.Cancel Then e.Cancel = True

    ' Note: Instead of canceling the edit you can 
    ' change the text by setting the LabelEditText
    ' property of the event parameters in this event.
    'e.LabelEditText = "some new text"

End Sub
'Declaration
 
Public Class ValidateLabelEditEventArgs 
   Inherits System.ComponentModel.CancelEventArgs
 
using System.Diagnostics;
using Infragistics.Win.UltraWinTree;

private void ultraTree1_ValidateLabelEdit(object sender, Infragistics.Win.UltraWinTree.ValidateLabelEditEventArgs e)
{

	Infragistics.Win.UltraWinTree.UltraTree tree;
	
	tree = sender as Infragistics.Win.UltraWinTree.UltraTree;

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

	sb.Append("Node: ");
	sb.Append(tree.ActiveNode.Key);
	
	sb.Append("'s text is being changed to: ");
	sb.Append(e.LabelEditText);
		
	DialogResult dr = MessageBox.Show( this,
						  sb.ToString(),
						  "Node text changing",
						  MessageBoxButtons.OKCancel );
						  
		
	if ( dr == DialogResult.Cancel )
		e.Cancel = true;

	// Note: Instead of canceling the edit you can 
	// change the text by setting the LabelEditText
	// property of the event parameters in this event.
	//e.LabelEditText = "some new text";

}
'Declaration
 
Public Class ValidateLabelEditEventArgs 
   Inherits System.ComponentModel.CancelEventArgs
 
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

See Also