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Package.PartExists Method

Indicates whether a part with a given URI is in the package.

Namespace:  System.IO.Packaging
Assembly:  WindowsBase (in WindowsBase.dll)

public virtual bool PartExists(
	Uri partUri
You cannot use methods in XAML.


Type: System.Uri

The Uri of the part to check for.

Return Value

Type: System.Boolean
true if a part with the specified partUri is in the package; otherwise, false.


partUri is null.


partUri is not a valid PackagePart uniform resource identifier (URI).


The package is not open (Dispose or Close has been called).


The package is write-only (information cannot be read).

The partUri should begin with a forward-slash character "/" and be absolute from the root of the package.

For additional information, see the Open Packaging Conventions (OPC) specification available for download at

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5, 3.0