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Package.GetPartCore Method

When overridden in a derived class, returns the part addressed by a given URI.

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

protected abstract PackagePart GetPartCore(
	Uri partUri
You cannot use methods in XAML.


Type: System.Uri

The uniform resource identifier (URI) of the part to retrieve.

Return Value

Type: System.IO.Packaging.PackagePart
The requested part; or null, if a part with the specified partUri is not in the package.

By default, a ZipPackage derived implementation of the abstract Package class is provided and used. In the default operation, GetPart internally calls GetPartCore of the ZipPackage class to retrieve a part from a ZIP file.

For more information about the package model and package parts, see Chapter 1 of the Open Packaging Conventions (OPC) specification available for download at

Notes to Inheritors:

The derived class GetPartCore implementation is called by the GetPart method to access and return the specified part based on the physical format implemented in the derived class.

The derived GetPartCore implementation should make no assumptions about the order or operations performed by the GetPart method that calls it.

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