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PackUriHelper.ComparePackUri Method

Returns a value that indicates whether two pack URIs are equivalent.

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

public static int ComparePackUri(
	Uri firstPackUri,
	Uri secondPackUri


Type: System.Uri
The first pack URI.
Type: System.Uri
The second pack URI.

Return Value

Type: System.Int32
A signed integer indicating the relationship between firstPackUri and secondPackUri.



Less than 0

firstPackUri is less than secondPackUri.


firstPackUri is equivalent to secondPackUri.

Greater than 0

firstPackUri is greater than secondPackUri.


Either firstPackUri or secondPackUri is not an absolute URI.


Either firstPackUri or secondPackUri do not begin with a "pack://" scheme.

If both firstPackUri and secondPackUri are null, ComparePackUri returns 0. When comparing pack URIs, a null URI is always less than a non-null URI. For cases where firstPackUri and secondPackUri are both absolute pack URIs, ComparePackUri performs the comparison.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later)

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