PackUriHelper.ResolvePartUri(Uri, Uri) Methode
Definition
Wichtig
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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
- targetUri
- Uri
Der relative URI zum Zielteil.
Gibt zurück
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 |