Splitter.SplitterMoving Event

Definition

Occurs when the splitter control is in the process of moving. SplitterMoving has been replaced by SplitterMoving and is provided only for compatibility with previous versions.

C#
public event System.Windows.Forms.SplitterEventHandler SplitterMoving;
C#
public event System.Windows.Forms.SplitterEventHandler? SplitterMoving;

Event Type

Examples

The following code example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the SplitterMoving 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 Splitter named Splitter1. Then ensure that the event handler is associated with the SplitterMoving event.

C#
private void Splitter1_SplitterMoving(Object sender, SplitterEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "X", e.X );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Y", e.Y );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "SplitX", e.SplitX );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "SplitY", e.SplitY );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "SplitterMoving Event" );
}

Remarks

You can create an event handler for the SplitterMoving event to perform resize validation in your application. For example, if a Splitter control is docked to the edges of a TreeView control and a ListView control, you can write code in the SplitterMoved event to determine if the minimum and/or maximum size for the TreeView and ListView controls has been exceeded and restrict the resizing of the controls to their minimum or maximum size.

For more information about handling events, see Handling and Raising Events.

Applies to

Product Versions
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9

See also