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FileDialog.AddExtension Property

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

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

public bool AddExtension { get; set; }
/** @property */
public boolean get_AddExtension ()

/** @property */
public void set_AddExtension (boolean value)

public function get AddExtension () : boolean

public function set AddExtension (value : boolean)

Property Value

true if the dialog box adds an extension to a file name if the user omits the extension; otherwise, false. The default value is true.

The extension added to a file name depends on the currently selected file filter and the value of the CheckFileExists property.

If the CheckFileExists property is true, the dialog box adds the first extension from the current file filter that matches an existing file. If no files match the current file filter, the dialog box adds the extension specified in the DefaultExt property.

If the CheckFileExists property is false, the dialog box adds the first valid file name extension from the current file filter. If the current file filter contains no valid file name extensions, the dialog box adds the extension specified in the DefaultExt property.

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

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

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