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Accepted
Leksor
Asked:2020-04-09 20:45:39 +0000 UTC2020-04-09 20:45:39 +0000 UTC

发送要打印的文档

  • 772

我在服务器上生成一个 excel 文档并将其发送到客户端应用程序。对于生成，我使用ASPOSE库。结果，在客户端上，我有一个byte[]可以转换为的数组Workbook和Worksheet. 这是主要问题，您如何打开标准打印机选择对话框并发送处于我列出的状态之一的文档 ( byte[], Workbook, Worksheet) 进行打印？

var memoryStream = new MemoryStream(workbookBytes);
var workbook = new Workbook(memoryStream);
var worksheet = workbook.Worksheets[0];

var printDialog = new PrintDialog();   
var print = printDialog.ShowDialog();
if (print == true)
{
    // Печать workbookBytes или workbook или worksheet
}
c#

1 个回答

  1. Best Answer

    到目前为止，我已经这样做了：

    1. 将工作表转换为位图。
    2. 然后 Bitmap 到 BitmapSource
    3. 然后打开打印机选择窗口并发送BitmapSource给它

    编码：

    var memoryStream = new MemoryStream(workbookBytes);
var workbook = new Workbook(memoryStream);
var worksheet = workbook.Worksheets[0];

var options = new ImageOrPrintOptions
{
    OnePagePerSheet = true,
    ImageFormat = ImageFormat.Jpeg
};
var sheetRender = new SheetRender(worksheet, options);
var bitmap = sheetRender.ToImage(0);
var intPtr = bitmap.GetHbitmap();
var bitmapSource = Imaging.CreateBitmapSourceFromHBitmap(intPtr, IntPtr.Zero, Int32Rect.Empty,
                   BitmapSizeOptions.FromEmptyOptions());

var printDialog = new PrintDialog();   
var print = printDialog.ShowDialog();
if (print == true)
{
    var drawingVisual = new DrawingVisual();
    using (var dc = drawingVisual.RenderOpen())
    {
        dc.DrawImage(bitmapSource, new Rect(0, 0, bitmapSource.Width, bitmapSource.Height));
    }
    printDialog.PrintVisual(drawingVisual, "Print Document Image");
}
    • 2

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