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PackUriHelper.ResolvePartUri Method

Returns a part URI given a source part URI and a URI with a relative path to a target part.

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

public static Uri ResolvePartUri (
	Uri sourcePartUri,
	Uri targetUri
)
public static Uri ResolvePartUri (
	Uri sourcePartUri, 
	Uri targetUri
)
public static function ResolvePartUri (
	sourcePartUri : Uri, 
	targetUri : Uri
) : Uri
You cannot use methods in XAML.

Parameters

sourcePartUri

The URI of the source part, or "/" to designate the Package root.

targetUri

The relative URI to the target part.

Return Value

The URI of the target part resolved between the specified SourcePartUri and the targetUri parameters.

Exception typeCondition

ArgumentNullException

sourcePartUri or targetUri is a null reference (Nothing in Visual Basic).

ArgumentException

sourcePartUri is not a valid part URI.

-or-

targetUri is not a valid relative URI.

The following table illustrates sample cases for ResolvePartUri:

 sourcePartUri

 targetUri

 Returned URI 

 /mydoc/markup/page.xml 

 picture.jpg 

 /mydoc/markup/picture.jpg 

 /mydoc/markup/page.xml 

 images/picture.jpg 

 /mydoc/markup/images/picture.jpg 

 /mydoc/markup/page.xml 

 ./picture.jpg 

 /mydoc/markup/picture.jpg 

 /mydoc/markup/page.xml 

 ../picture.jpg 

 /mydoc/picture.jpg 

 /mydoc/markup/page.xml 

 ../images/picture.jpg 

 /mydoc/images/picture.jpg 

 / 

 images/picture.jpg 

 /images/picture.jpg 

The following example shows how to use the ResolvePartUri method. For the complete sample, see Reading a Package Sample.

// Open the Package.
// ('using' statement insures that 'package' is
//  closed and disposed when it goes out of scope.)
using (Package package =
    Package.Open(packagePath, FileMode.Open, FileAccess.Read))
{
    PackagePart documentPart = null;
    PackagePart resourcePart = null;

    // Get the Package Relationships and look for
    //   the Document part based on the RelationshipType
    Uri uriDocumentTarget = null;
    foreach (PackageRelationship relationship in
        package.GetRelationshipsByType(PackageRelationshipType))
    {
        // Resolve the Relationship Target Uri
        //   so the Document Part can be retrieved.
        uriDocumentTarget = PackUriHelper.ResolvePartUri(
            new Uri("/", UriKind.Relative), relationship.TargetUri);

        // Open the Document Part, write the contents to a file.
        documentPart = package.GetPart(uriDocumentTarget);
        ExtractPart(documentPart, targetDirectory);
    }

    // Get the Document part's Relationships,
    //   and look for required resources.
    Uri uriResourceTarget = null;
    foreach (PackageRelationship relationship in
        documentPart.GetRelationshipsByType(
                                ResourceRelationshipType))
    {
        // Resolve the Relationship Target Uri
        //   so the Resource Part can be retrieved.
        uriResourceTarget = PackUriHelper.ResolvePartUri(
            documentPart.Uri, relationship.TargetUri);

        // Open the Resource Part and write the contents to a file.
        resourcePart = package.GetPart(uriResourceTarget);
        ExtractPart(resourcePart, targetDirectory);
    }

}// end:using(Package package) - Close & dispose package.

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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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