PackUriHelper.ResolvePartUri(Uri, Uri) Methode

Definition

Gibt einen Teil-URI mit einem Quellteil-URI und einem URI mit einem relativen Pfad zu einem Zielteil zurück.

public:
 static Uri ^ ResolvePartUri(Uri ^ sourcePartUri, Uri ^ targetUri);
public static Uri ResolvePartUri(Uri sourcePartUri, Uri targetUri);
static member ResolvePartUri : Uri * Uri -> Uri
Public Shared Function ResolvePartUri (sourcePartUri As Uri, targetUri As Uri) As Uri

Parameter

sourcePartUri
Uri

Der URI des Quellteils oder des Typs "/", um den Package Stamm festzulegen.

targetUri
Uri

Der relative URI zum Zielteil.

Gibt zurück

Uri

Der URI des Zielteils wurde zwischen den angegebenen sourcePartUri und den targetUri Parametern aufgelöst.

Ausnahmen

sourcePartUri oder targetUri ist null.

sourcePartUri ist kein gültiger Teil-URI.

-oder-

targetUri ist kein gültiger relativer URI.

Beispiele

Das folgende Beispiel zeigt, wie die ResolvePartUri Methode verwendet wird.

// 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.
' Open the Package.
' ('using' statement insures that 'package' is
'  closed and disposed when it goes out of scope.)
Using package As Package = Package.Open(packagePath, FileMode.Open, FileAccess.Read)
    Dim documentPart As PackagePart = Nothing
    Dim resourcePart As PackagePart = Nothing

    ' Get the Package Relationships and look for
    '   the Document part based on the RelationshipType
    Dim uriDocumentTarget As Uri = Nothing
    For Each relationship As PackageRelationship 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)
    Next relationship

    ' Get the Document part's Relationships,
    '   and look for required resources.
    Dim uriResourceTarget As Uri = Nothing
    For Each relationship As PackageRelationship 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)
    Next relationship

End Using ' end:using(Package package) - Close & dispose package.

Hinweise

In der folgenden Tabelle sind Beispielfälle für ResolvePartUri.

sourcePartUri targetUri Zurückgegebener 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

Gilt für:

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