BeforeColumnMoved Event

Occurs before an UltraTreeNodeColumn is moved via a drag and drop operation by the end user.

Syntax

Visual Basic

'Declaration
 
Public Event BeforeColumnMoved As BeforeColumnMovedEventHandler

C#

public event BeforeColumnMovedEventHandler BeforeColumnMoved

Event Data

The event handler receives an argument of type BeforeColumnMovedEventArgs containing data related to this event. The following BeforeColumnMovedEventArgs properties provide information specific to this event.

Property	Description
Cancel (Inherited from System.ComponentModel.CancelEventArgs)
Column	Returns the UltraTreeNodeColumn that was resized.

Example

The following code sample demonstrates how to use the BeforeColumnMoved and AfterColumnMoved events.

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

Imports Infragistics.Win
Imports Infragistics.Win.Layout
Imports Infragistics.Win.UltraWinTree

    Private Sub ultraTree1_AfterColumnMoved(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinTree.AfterColumnMovedEventArgs) Handles ultraTree1.AfterColumnMoved
        Debug.WriteLine("Column '" + e.Column.TextResolved + "' successfully moved")
    End Sub

    Private Sub ultraTree1_BeforeColumnMoved(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinTree.BeforeColumnMovedEventArgs) Handles ultraTree1.BeforeColumnMoved
        '	Disallow moving the leftmost column
        If e.Column.LayoutInfo.OriginX = 0 Then
            e.Cancel = True
        End If
    End Sub

C#

using Infragistics.Win;
using Infragistics.Win.Layout;
using Infragistics.Win.UltraWinTree;
using System.Diagnostics;

		private void ultraTree1_AfterColumnMoved(object sender, Infragistics.Win.UltraWinTree.AfterColumnMovedEventArgs e)
		{
			Debug.WriteLine( "Column '" + e.Column.TextResolved + "' successfully moved" );
		}

		private void ultraTree1_BeforeColumnMoved(object sender, Infragistics.Win.UltraWinTree.BeforeColumnMovedEventArgs e)
		{
			//	Disallow moving the leftmost column
			if ( e.Column.LayoutInfo.OriginX == 0 )
				e.Cancel = 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