FileDialog.SupportMultiDottedExtensions Property

Note: This property is new in the .NET Framework version 2.0.

Gets or sets whether the dialog box supports displaying and saving files that have multiple file name extensions.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in

public bool SupportMultiDottedExtensions { get; set; }
/** @property */
public boolean get_SupportMultiDottedExtensions ()

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

public function get SupportMultiDottedExtensions () : boolean

public function set SupportMultiDottedExtensions (value : boolean)

Property Value

true if the dialog box supports multiple file name extensions; otherwise, false. The default is false.

Sometimes users must open and save files that use multiple file name extensions. For example, the application manifest files used by the ClickOnce deployment technology end in the complex file name extension ".exe.manifest". Setting this property to true enables you to set the Filter property to a multi-dotted extension.

If SupportMultiDottedExtensions is false, and you assign a multi-dotted extension to Filter, derived controls such as SaveFileDialog will only use the last extension in the string. For example, ".manifest" will be used instead of ".exe.manifest".

The following code example saves files with the extension ".data.txt". This code example requires that your application host a SaveFileDialog named saveFileDialog1 and a Button named button1.

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