儲存筆墨

方法 Save 支援將筆跡儲存為筆跡序列化格式 （ISF）。 類別的 StrokeCollection 建構函式支援讀取筆跡資料。

筆跡儲存體和擷取

本節討論如何在 WPF 平臺中儲存和擷取筆跡。

下列範例會實作按鈕點選事件處理常式，以向使用者呈現 [檔案儲存] 對話方塊，並將筆跡從 InkCanvas 輸出儲存至檔案。

private void buttonSaveAsClick(object sender, RoutedEventArgs e)
{
    SaveFileDialog saveFileDialog1 = new SaveFileDialog();
    saveFileDialog1.Filter = "isf files (*.isf)|*.isf";

    if (saveFileDialog1.ShowDialog() == true)
    {
        FileStream fs = new FileStream(saveFileDialog1.FileName,
                                       FileMode.Create);
        theInkCanvas.Strokes.Save(fs);
        fs.Close();
    }
}

Private Sub buttonSaveAsClick(ByVal sender As Object, ByVal e As RoutedEventArgs) 

    Dim saveFileDialog1 As New SaveFileDialog()
    saveFileDialog1.Filter = "isf files (*.isf)|*.isf"

    If saveFileDialog1.ShowDialog() Then
        Dim fs As New FileStream(saveFileDialog1.FileName, FileMode.Create)
        theInkCanvas.Strokes.Save(fs)
        fs.Close()
    End If

End Sub

下列範例會實作按鈕點選事件處理常式，以向使用者呈現 [開啟檔案] 對話方塊，並將檔案中的筆跡讀取至 InkCanvas 專案。

private void buttonLoadClick(object sender, RoutedEventArgs e)
{
    OpenFileDialog openFileDialog1 = new OpenFileDialog();
    openFileDialog1.Filter = "isf files (*.isf)|*.isf";

    if (openFileDialog1.ShowDialog() == true)
    {
        FileStream fs = new FileStream(openFileDialog1.FileName,
                                       FileMode.Open);
        theInkCanvas.Strokes = new StrokeCollection(fs);
        fs.Close();
    }
}

Private Sub buttonLoadClick(ByVal sender As Object, ByVal e As RoutedEventArgs) 

    Dim openFileDialog1 As New OpenFileDialog()
    openFileDialog1.Filter = "isf files (*.isf)|*.isf"

    If openFileDialog1.ShowDialog() Then
        Dim fs As New FileStream(openFileDialog1.FileName, FileMode.Open)
        theInkCanvas.Strokes = New StrokeCollection(fs)
        fs.Close()
    End If

End Sub

另請參閱

• InkCanvas
• Windows Presentation Foundation