Question

我在silverlight中编写了一个用于查看Tiff文件的应用程序网站。我将一个绝对uri的Tiff文件发送到silverlight app并查看/缩放或下载文件。

我使用PrintDocument库打印tiff，但发送到打印机的文件非常大（100kb的tiff文件为500Mb）。

现在这是我的打印代码：

 Protected Sub pd_PrintPage(ByVal sender As Object, ByVal ev As PrintPageEventArgs)
    Try
        If (PrintPageCount = 0) Then
            PrintPageCount = ImageTiff.NumberOfDirectories
            PrintCurrPage = 0
        End If
        If (PrintCurrPage < PrintPageCount) Then
            ImageTiff.SetDirectory(PrintCurrPage)
            Dim cnv As New Canvas With
                {
                    .Width = 840,
                    .Height = 1180,
                    .Background = New ImageBrush With {
                             .ImageSource = GetWritableBmp(ImageTiff, larghezza, altezza),
                             .Stretch = Stretch.Fill
                     }
                }
            ev.PageVisual = cnv
            PrintCurrPage += 1
            ev.HasMorePages = True
        Else
            ev.HasMorePages = False
        End If
    Catch ex As Exception
        MessageBox.Show("Errore handler:" & ex.Message & vbCrLf & ex.StackTrace)
    End Try
End Sub

我的打印按钮的事件处理程序

 Private Sub ButtonPrint_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles ButtonPrint.Click
    Try
        Dim pdoc As New PrintDocument()
        AddHandler pdoc.PrintPage, AddressOf Me.pd_PrintPage
        pdoc.Print(Uri.AbsoluteUri)
    Catch ex As Exception
        MessageBox.Show("Errore:" & ex.Message)
    End Try
End Sub

我想直接向打印机发送“http://www.mysite.it/tifffiles/mytif.tif”的打印件，这可能吗？

Answer 1

在Silverlight 4及更高版本中，Microsoft扩展了对打印文档的支持。见http://msdn.microsoft.com/en-us/library/ee671023(v=VS.95).aspx。如果您可以将TIFF转换为XAML文档或位图，则可以使您的过程更容易。

如何在silverlight中打印文档

1 个答案: