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FileDialog.AddExtension Property

Gets or sets a value indicating whether a file dialog automatically adds an extension to a file name if the user omits an extension.

Namespace:  Microsoft.Win32
Assembly:  PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: Not mapped to an xmlns.
member AddExtension : bool with get, set
<object AddExtension="bool" .../>

Property Value

Type: System.Boolean
true if extensions are added; otherwise, false. The default is true.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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