PackageStore.GetPackage(Uri) Methode

Referenz

Definition

Namespace:: System.IO.Packaging

Assembly:: PresentationCore.dll

Wichtig

Einige Informationen beziehen sich auf Vorabversionen, die vor dem Release ggf. grundlegend überarbeitet werden. Microsoft übernimmt hinsichtlich der hier bereitgestellten Informationen keine Gewährleistungen, seien sie ausdrücklich oder konkludent.

Gibt das Package mit einem angegebenen URI aus dem Speicher zurück.

public:
 static System::IO::Packaging::Package ^ GetPackage(Uri ^ uri);

public static System.IO.Packaging.Package GetPackage (Uri uri);

static member GetPackage : Uri -> System.IO.Packaging.Package

Public Shared Function GetPackage (uri As Uri) As Package

Parameter

uri: Uri

Der URI (Uniform Resource Identifier) des zurückzugebenden Pakets.

Gibt zurück

Package

Das Paket mit einem angegebenen packageUri oder null, wenn kein Paket mit dem angegebenen packageUri im Speicher vorhanden ist.

Ausnahmen

ArgumentNullException

packageUri ist null.

ArgumentException

packageUri ist ein ungültiger Paket-URI.

Beispiele

Im folgenden Beispiel wird die Verwendung der GetPackage-Methode gezeigt.

// --------------------------- OpenDocument ---------------------------
/// <summary>
///   Loads and displays a given XPS document file.</summary>
/// <param name="filename">
///   The path and file name of the XPS
///   document to load and display.</param>
/// <returns>
///   true if the document loads successfully; otherwise false.</returns>
public bool OpenDocument(string xpsFile)
{
    // Check to see if the document is encrypted.
    // If encrypted, use OpenEncryptedDocument().
    if (EncryptedPackageEnvelope.IsEncryptedPackageEnvelope(xpsFile))
        return OpenEncryptedDocument(xpsFile);

    // Document is not encrypted, open normally.
    ShowStatus("Opening '" + Filename(xpsFile) + "'");

    _packageUri = new Uri(xpsFile, UriKind.Absolute);
    try
    {
        _xpsDocument = new XpsDocument(xpsFile, FileAccess.Read);
    }
    catch (System.IO.FileFormatException ex)
    {
        MessageBox.Show(xpsFile + "\n\nThe file " +
            "is not a valid XPS document.\n\n" +
            "Exception: " + ex.Message + "\n\n" +
            ex.GetType().ToString() + "\n\n" + ex.StackTrace,
            "Invalid File Format",
            MessageBoxButton.OK, MessageBoxImage.Error);
        return false;
    }

    // Get the document's PackageStore into which
    // new user annotations will be added and saved.
    _xpsPackage = PackageStore.GetPackage(_packageUri);
    if ((_xpsPackage == null) || (_xpsDocument == null))
    {
        MessageBox.Show("Unable to get Package from file.");
        return false;
    }

    // Get the FixedDocumentSequence from the open document.
    FixedDocumentSequence fds = _xpsDocument.GetFixedDocumentSequence();
    if (fds == null)
    {
        MessageBox.Show(xpsFile + "\n\nThe document package within " +
            "the specified file does not contain a " +
            "FixedDocumentSequence.", "Package Error");
        return false;
    }

    // Load the FixedDocumentSequence to the DocumentViewer control.
    DocViewer.Document = fds;

    // Enable document menu controls.
    menuFileClose.IsEnabled  = true;
    menuFilePrint.IsEnabled  = true;
    menuViewIncreaseZoom.IsEnabled = true;
    menuViewDecreaseZoom.IsEnabled = true;

    // Give the DocumentViewer focus.
    docViewer.Focus();

    this.Title = "RightsManagedPackageViewer SDK Sample - " +
                 Filename(xpsFile);
    return true;
}// end:OpenDocument()

' --------------------------- OpenDocument ---------------------------
''' <summary>
'''   Loads and displays a given XPS document file.</summary>
''' <param name="filename">
'''   The path and file name of the XPS
'''   document to load and display.</param>
''' <returns>
'''   true if the document loads successfully; otherwise false.</returns>
Public Function OpenDocument(ByVal xpsFile As String) As Boolean
    ' Check to see if the document is encrypted.
    ' If encrypted, use OpenEncryptedDocument().
    If EncryptedPackageEnvelope.IsEncryptedPackageEnvelope(xpsFile) Then
        Return OpenEncryptedDocument(xpsFile)
    End If

    ' Document is not encrypted, open normally.
    ShowStatus("Opening '" & Filename(xpsFile) & "'")

    _packageUri = New Uri(xpsFile, UriKind.Absolute)
    Try
        _xpsDocument = New XpsDocument(xpsFile, FileAccess.Read)
    Catch ex As System.IO.FileFormatException
        MessageBox.Show(xpsFile & vbLf & vbLf & "The file " & "is not a valid XPS document." & vbLf & vbLf & "Exception: " & ex.Message & vbLf & vbLf & ex.GetType().ToString() & vbLf & vbLf & ex.StackTrace, "Invalid File Format", MessageBoxButton.OK, MessageBoxImage.Error)
        Return False
    End Try


    ' Get the document's PackageStore into which
    ' new user annotations will be added and saved.
    _xpsPackage = PackageStore.GetPackage(_packageUri)
    If (_xpsPackage Is Nothing) OrElse (_xpsDocument Is Nothing) Then
        MessageBox.Show("Unable to get Package from file.")
        Return False
    End If

    ' Get the FixedDocumentSequence from the open document.
    Dim fds As FixedDocumentSequence = _xpsDocument.GetFixedDocumentSequence()
    If fds Is Nothing Then
        MessageBox.Show(xpsFile & vbLf & vbLf & "The document package within " & "the specified file does not contain a " & "FixedDocumentSequence.", "Package Error")
        Return False
    End If

    ' Load the FixedDocumentSequence to the DocumentViewer control.
    DocViewerProperty.Document = fds

    ' Enable document menu controls.
    menuFileClose.IsEnabled = True
    menuFilePrint.IsEnabled = True
    menuViewIncreaseZoom.IsEnabled = True
    menuViewDecreaseZoom.IsEnabled = True

    ' Give the DocumentViewer focus.
    docViewer.Focus()

    Me.Title = "RightsManagedPackageViewer SDK Sample - " & Filename(xpsFile)
    Return True
End Function ' end:OpenDocument()

Hinweise

packageUri wird mit den im AddPackage Methodenaufruf angegebenen URIs abgeglichen.

Sicherheitshinweis Diese Methode erfordert EnvironmentPermission alle benutzerdefinierten Package (nicht-ZipPackage) Typen.

Gilt für:

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