This documentation is archived and is not being maintained.

SplitContainer.SplitterMoving Event

Occurs when the splitter control is in the process of moving.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public event SplitterCancelEventHandler SplitterMoving

This event occurs only when the user moves the splitter control. It does not occur when you change the SplitterDistance property value programmatically.

For more information about handling events, see Consuming Events.

The following code example raises the SplitterMoving event, signified in this example by a change to the cursor style when you move the splitter. The SplitterMoved event is raised when you stop moving the splitter. This is signified in this example by the cursor style reverting to the default.

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

public class Form1 : System.Windows.Forms.Form
private System.Windows.Forms.SplitContainer splitContainer1;

// Create an empty Windows form.
public Form1()
	private void InitializeComponent()
        splitContainer1 = new System.Windows.Forms.SplitContainer();

        // Place a basic SplitContainer control onto Form1.
        splitContainer1.Dock = System.Windows.Forms.DockStyle.Fill;
        splitContainer1.Location = new System.Drawing.Point(0, 0);
        splitContainer1.Name = "splitContainer1";
        splitContainer1.Size = new System.Drawing.Size(292, 273);
        splitContainer1.SplitterDistance = 52;
        splitContainer1.SplitterWidth = 6;
        splitContainer1.TabIndex = 0;
        splitContainer1.Text = "splitContainer1";

        // Add the event handler for the SplitterMoved event.
        splitContainer1.SplitterMoved += new System.Windows.Forms.SplitterEventHandler(splitContainer1_SplitterMoved);

        // Add the event handler for the SplitterMoving event.
        splitContainer1.SplitterMoving += new System.Windows.Forms.SplitterCancelEventHandler(splitContainer1_SplitterMoving);

        // This is the left panel of the vertical SplitContainer control.
        splitContainer1.Panel1.Name = "splitterPanel1";

        // This is the right panel of the vertical SplitContainer control.
        splitContainer1.Panel2.Name = "splitterPanel2";

        // Lay out the basic properties of the form.
        ClientSize = new System.Drawing.Size(292, 273);
        Name = "Form1";
        Text = "Form1";

	static void Main() 
		Application.Run(new Form1());

    private void splitContainer1_SplitterMoved(System.Object sender, System.Windows.Forms.SplitterEventArgs e)
    // Define what happens when the splitter is no longer moving.

    private void splitContainer1_SplitterMoving(System.Object sender, System.Windows.Forms.SplitterCancelEventArgs e)
    // Define what happens while the splitter is moving.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.