Window.DragMove Method

.NET Framework 4.6 and 4.5

Allows a window to be dragged by a mouse with its left button down over an exposed area of the window's client area.

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

Syntax

public void DragMove()

Exceptions

Exception	Condition
InvalidOperationException	The left mouse button is not down.

Remarks

The left mouse button must be down when DragMove is called. One way to detect when the left mouse button is pressed is to handle the MouseLeftButtonDown event.

When DragMove is called, the left mouse button must be depressed over an exposed area of the window's client area.

Note
This method cannot be called when a window is hosted in a browser.

Examples

The following example shows how to override OnMouseLeftButtonDown to call DragMove.

protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
    base.OnMouseLeftButtonDown(e);

    // Begin dragging the window 
    this.DragMove();
}

Version Information

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET Framework Security

UIPermission
for permission to drag a window. Associated enumeration: AllWindows