Window.Left Property


Gets or sets the position of the window's left edge, in relation to the desktop.

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

[TypeConverterAttribute("System.Windows.LengthConverter, PresentationFramework, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35, Custom=null")]
public double Left { get; set; }

Property Value

Type: System.Double

The position of the window's left edge, in logical units (1/96th of an inch).

When the Window is maximized or minimized, this value represents the left edge of the restore point for the Window.

This property cannot be set through a style.

If you do not specify a value, Left is set to the system default value. You can also specify the system default value by setting Left to NaN. Neither NegativeInfinity nor PositiveInfinity is a valid value for Left.


You cannot set or get this property when a window is hosted in a browser.

Identifier field


Metadata properties set to true


.NET Framework
Available since 3.0
Available since 4.0
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