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PackUriHelper.ResolvePartUri(Uri, Uri) Metoda

Definicja

Zwraca identyfikator URI części z identyfikatorem URI części źródłowej i identyfikatorem URI ze ścieżką względną do części docelowej.

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

Parametry

sourcePartUri
Uri

Identyfikator URI części źródłowej lub "/" do wyznaczenia Package katalogu głównego.

targetUri
Uri

Względny identyfikator URI do części docelowej.

Zwraca

Uri

Identyfikator URI części docelowej rozpoznany między określonymi SourcePartUri i parametrami targetUri .

Wyjątki

sourcePartUri lub targetUri to null.

sourcePartUri nie jest prawidłowym identyfikatorem URI części.

-lub-

targetUri nie jest prawidłowym względnym identyfikatorem URI.

Przykłady

W poniższym przykładzie pokazano, jak używać ResolvePartUri metody .

// 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.

Uwagi

W poniższej tabeli przedstawiono przykładowe przypadki dla ResolvePartUriprogramu .

sourcePartUri targetUri Zwrócony identyfikator 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

Dotyczy

Zobacz też