Window.Left Property (System.Windows)

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.NET Framework Class Library

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)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation

Syntax

Visual Basic

<TypeConverterAttribute("System.Windows.LengthConverter, PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, Custom=null")> _
Public Property Left As Double
	Get
	Set

[TypeConverterAttribute("System.Windows.LengthConverter, PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, Custom=null")]
public double Left { get; set; }

Visual C++

[TypeConverterAttribute(L"System.Windows.LengthConverter, PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, Custom=null")]
public:
property double Left {
	double get ();
	void set (double value);
}

[<TypeConverterAttribute("System.Windows.LengthConverter, PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, Custom=null")>]
member Left : float with get, set

XAML Attribute Usage

<object Left="double" .../>

Property Value

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

Dependency Property Information

Identifier field	LeftProperty
Metadata properties set to true	None

Remarks

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.

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

Note

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

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, 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.

Reference

Window Class

System.Windows Namespace

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Other Resources

Dependency Properties Overview