TextRange.Save Método

public:
 void Save(System::IO::Stream ^ stream, System::String ^ dataFormat);

public void Save (System.IO.Stream stream, string dataFormat);

member this.Save : System.IO.Stream * string -> unit

Public Sub Save (stream As Stream, dataFormat As String)

Parâmetros

Exceções

Exemplos

O exemplo a seguir demonstra o uso do método Save.

// This method accepts an input stream and a corresponding data format.  The method
// will attempt to load the input stream into a TextRange selection, apply Bold formatting
// to the selection, save the reformatted selection to an alternat stream, and return 
// the reformatted stream.  
Stream BoldFormatStream(Stream inputStream, string dataFormat)
{
    // A text container to read the stream into.
    FlowDocument workDoc = new FlowDocument();
    TextRange selection = new TextRange(workDoc.ContentStart, workDoc.ContentEnd);
    Stream outputStream = new MemoryStream();

    try
    {
        // Check for a valid data format, and then attempt to load the input stream
        // into the current selection.  Note that CanLoad ONLY checks whether dataFormat
        // is a currently supported data format for loading a TextRange.  It does not 
        // verify that the stream actually contains the specified format.  An exception 
        // may be raised when there is a mismatch between the specified data format and 
        // the data in the stream. 
        if (selection.CanLoad(dataFormat))
            selection.Load(inputStream, dataFormat);
    }
    catch (Exception e) { return outputStream; /* Load failure; return a null stream. */ }

    // Apply Bold formatting to the selection, if it is not empty.
    if (!selection.IsEmpty)
        selection.ApplyPropertyValue(TextElement.FontWeightProperty, FontWeights.Bold);

    // Save the formatted selection to a stream, and return the stream.
    if (selection.CanSave(dataFormat))
        selection.Save(outputStream, dataFormat);

    return outputStream;
}

' This method accepts an input stream and a corresponding data format.  The method
' will attempt to load the input stream into a TextRange selection, apply Bold formatting
' to the selection, save the reformatted selection to an alternat stream, and return 
' the reformatted stream.  
Private Function BoldFormatStream(ByVal inputStream As Stream, ByVal dataFormat As String) As Stream
    ' A text container to read the stream into.
    Dim workDoc As New FlowDocument()
    Dim selection As New TextRange(workDoc.ContentStart, workDoc.ContentEnd)
    Dim outputStream As Stream = New MemoryStream()

    Try
        ' Check for a valid data format, and then attempt to load the input stream
        ' into the current selection.  Note that CanLoad ONLY checks whether dataFormat
        ' is a currently supported data format for loading a TextRange.  It does not 
        ' verify that the stream actually contains the specified format.  An exception 
        ' may be raised when there is a mismatch between the specified data format and 
        ' the data in the stream. 
        If selection.CanLoad(dataFormat) Then
            selection.Load(inputStream, dataFormat)
        End If
    Catch e As Exception ' Load failure return a null stream. 
        Return outputStream
    End Try

    ' Apply Bold formatting to the selection, if it is not empty.
    If Not selection.IsEmpty Then
        selection.ApplyPropertyValue(TextElement.FontWeightProperty, FontWeights.Bold)
    End If

    ' Save the formatted selection to a stream, and return the stream.
    If selection.CanSave(dataFormat) Then
        selection.Save(outputStream, dataFormat)
    End If

    Return outputStream
End Function

Comentários

Quando esse método retorna, stream é deixado aberto e a posição atual dentro de stream é indefinida.

Como parte da operação de salvamento, o conteúdo na seleção atual pode ser convertido no formato de dados especificado por dataFormat.

Confira também

• CanSave(String)
• Load(Stream, String)
• CanLoad(String)

public:
 void Save(System::IO::Stream ^ stream, System::String ^ dataFormat, bool preserveTextElements);

public void Save (System.IO.Stream stream, string dataFormat, bool preserveTextElements);

member this.Save : System.IO.Stream * string * bool -> unit

Public Sub Save (stream As Stream, dataFormat As String, preserveTextElements As Boolean)

Parâmetros

Exceções

Comentários

Quando preserveTextElements é false, objetos TextElement personalizados são salvos como tipos de TextElement conhecidos. Por exemplo, suponha que você crie um TextElement personalizado chamado Heading1, que herda de Paragraph. Quando você chama esse método com preserveTextElements definido como false, Heading1 é convertido em um Paragraph quando o TextRange é salvo. Quando você chama esse método com preserveTextElements definido como true, Heading1 é salvo sem ser convertido. Para preservar elementos de texto personalizados, dataFormat deve ser definido como DataFormats.Xaml.

Save(Stream, String, Boolean) é introduzido no .NET Framework versão 3.5. Para obter mais informações, consulte versões e dependências.