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ScrollEventArgs.ScrollOrientation Property

Gets the scroll bar orientation that raised the Scroll event.

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

public ScrollOrientation ScrollOrientation { get; }
/** @property */
public ScrollOrientation get_ScrollOrientation ()

public function get ScrollOrientation () : ScrollOrientation

Not applicable.

Property Value

One of the ScrollOrientation values.

You would typically use the ScrollOrientation property to determine the scroll bar orientation that raised the Scroll event, such as with the ScrollableControl.Scroll event.

The following code example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the ScrollableControl.Scroll 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 System.Windows.Forms.MessageBox.Show with System.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 a type that inherits from ScrollableControl, such as a Panel or ContainerControl. Then name the instance ScrollableControl1 and ensure that the event handler is associated with the ScrollableControl.Scroll event.

private void ScrollableControl1_Scroll(Object sender, ScrollEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "ScrollOrientation", e.ScrollOrientation );
messageBoxCS.AppendFormat("{0} = {1}", "Type", e.Type );
messageBoxCS.AppendFormat("{0} = {1}", "NewValue", e.NewValue );
messageBoxCS.AppendFormat("{0} = {1}", "OldValue", e.OldValue );
MessageBox.Show(messageBoxCS.ToString(), "Scroll Event" );

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0