1

I have the following code in my attempts to create a PDF:

    public static MemoryStream Test()
    {
        var document = new Document();
        document.Info.Title = "Test Report";
        document.Info.Subject = "blah";
        document.Info.Author = "Me";
        //new CoverPageSummarySection().AddToDocument(document, new int[0], 2004);

        Style style = document.Styles["Normal"];
        style.Font.Name = "Times New Roman";
        style = document.Styles["Heading1"];
        style.Font.Name = "Tahoma";
        style.Font.Size = 14;
        style.Font.Bold = true;
        style.Font.Color = Colors.DarkBlue;
        style.ParagraphFormat.PageBreakBefore = true;
        style.ParagraphFormat.SpaceAfter = 6;

        var section = document.AddSection();
        var p = section.AddParagraph("test");
        p.AddText("Testing 1234");

        var renderer = new PdfDocumentRenderer(true, PdfSharp.Pdf.PdfFontEmbedding.Always);
        renderer.Document = document;
        renderer.RenderDocument();

        var ms = new MemoryStream();
        renderer.PdfDocument.Save(ms, false);
        return ms;
    }

The resulting pdf is blank. I can view the properties and the document.Info fields are showing correctly in my PDF, but I can't see any text on my page.

What am I doing wrong?

Edit: So it appears that the issue has something to do with saving to a memory stream. When I replace renderer.PdfDocument.Save(ms, false); to renderer.PdfDocument.Save("e:\\test.pdf"); it saves it correctly at test.pdf.

My code to save the memory stream to the asp.net output is:

        var stream = TestReportGen.Test();

        // Set the content headers
        HttpContext.Current.Response.Clear();
        HttpContext.Current.Response.Buffer = true;
        HttpContext.Current.Response.ContentType = "application/pdf";
        HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=testReport.pdf");

        stream.WriteTo(HttpContext.Current.Response.OutputStream);
        stream.Close();

        HttpContext.Current.Response.End();

Is the issue with how I'm sending back the memorystream or what?

4

3 回答 3

3

假设您有一个有效的 MigraDoc 文档，以下应该可以工作：

PdfDocumentRenderer renderer = new PdfDocumentRenderer(true, PdfFontEmbedding.Always);
renderer.Document = document;
renderer.RenderDocument();

// Send PDF to browser
MemoryStream stream = new MemoryStream();
renderer.PdfDocument.Save(stream, false);
Response.Clear();
Response.ContentType = "application/pdf";
Response.AddHeader("content-length", stream.Length.ToString());
Response.BinaryWrite(stream.ToArray());
Response.Flush();
stream.Close();
Response.End();
于 2013-01-11T01:12:59.857 回答
1

我与流有关的大部分问题都通过Seek(0, SeekOrigin.Begin).

于 2012-10-12T22:59:54.167 回答
0

我不是 ASP.NET 专家，但 PDFsharp 包含一个工作 Web 服务器示例：
http ://www.pdfsharp.net/wiki/Clock-sample.ashx

我不知道是否是失踪content-length造成了差异。

Seek(0, SeekOrigin.Begin)早期版本的 PDFsharp 缺少，但在当前版本中自动完成。

于 2012-10-13T05:29:35.717 回答