将aspx页面导出为pdf [英] Exporting aspx page to pdf

问题描述

我正在尝试下载一个aspx页面作为pdf.I我正在使用以下代码。它正在创建一个pdf文档。但我无法打开它。任何人都可以帮助我吗？

Hi,
I am trying to download an aspx page as a pdf.I am using the following code.It is creating one pdf document.But I couldn't open that. Can anyone help me?

protected void imgbtnprint_Click(object sender, ImageClickEventArgs e)
    {
        Response.Clear();
        Response.Buffer = true;
        Response.ContentType = "application/pdf";               Response.AddHeader("content-disposition","attachment;filename=TestPage.pdf");
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        StringWriter sw = new StringWriter();
        HtmlTextWriter hw = new HtmlTextWriter(sw);
        this.Page.RenderControl(hw);
        StringReader sr = new StringReader(sw.ToString());
        Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 100f, 0f);
        HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
        PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
        Response.Write(sw.ToString());
        pdfDoc.Open();
        Response.End();
        }

推荐答案

看起来你最后错过了几行，修改为：

Looks like you missed few lines at the end, modify it to:

PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
// missed/correct way lines
pdfDoc.Open();
htmlparser.Parse(sr);
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();

看看这个样本：

使用ITextSharp 将Gridview数据导出为PDF [ ^ ]



要导出整个页面而不仅仅是网格，您需要更改此行：

Have a look at this sample:
Export Gridview data to PDF using ITextSharp[^]

To export whole page instead of just grid, you would need to change this line:

gvdetails.RenderControl(hw);

to

to

this.RenderControl(hw);

最后我将该aspx页面中的UpdatePanel导出为pdf文件，而不是导出整个页面如果我正在编写this.Page而不是UpdatePanel1，则会导致异常无法转换类型为'的对象iTextSharp.text.html.simpleparser.CellWrapper '输入' iTextSharp.text.Paragraph 。

At last i have exported the UpdatePanel in that aspx page to pdf file instead of exporting the whole page to pdf .If I am writing "this.Page" instead of "UpdatePanel1" it results in an exception Unable to cast object of type 'iTextSharp.text.html.simpleparser.CellWrapper' to type'iTextSharp.text.Paragraph'.

protected void imgbtnprint_Click(object sender, ImageClickEventArgs e)
    {
        Response.Clear();
        Response.Buffer = true;
        Response.ContentType = "application/pdf";
        Response.AddHeader("content-disposition", "attachment;filename=UserDetails.pdf");
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        StringWriter sw = new StringWriter();
        HtmlTextWriter hw = new HtmlTextWriter(sw);
        UpdatePanel1.DataBind();
        UpdatePanel1.RenderControl(hw);
        StringReader sr = new StringReader(sw.ToString());
        Document pdfDoc = new Document(PageSize.A2, 10f, 10f, 100f, 0f);
        HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
        PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
        pdfDoc.Open();
        htmlparser.Parse(sr);
        pdfDoc.Close();
        Response.Write(pdfDoc);
        Response.End();
    }
    public override void VerifyRenderingInServerForm(Control txt_salutaion)
    {
        /* Verifies that the control is rendered */
    }

这篇关于将aspx页面导出为pdf的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！