当值来自gridview时在Itextsharp中添加标题页答案

【问题标题】：Adding Header Page in Itextsharp when the value is from gridview当值来自gridview时在Itextsharp中添加标题页
【发布时间】：2021-03-11 00:54:29
【问题描述】：

我想将gridview转换为pdf，代码运行良好，但我很困惑如何在其上制作headerpage（不是header column），我尝试使用stringbuilder但是当我尝试gridview不是在pdf中查看时，我也尝试了其他方法，但仍然不知道如何使它起作用，也许你可以教我如何让它工作？

在这段代码中我尝试使用块，但块没有显示:(

    protected void btnConvertPDF_Click(object sender, EventArgs e)
     {
        gridconvertPDF.AllowPaging = false;

        Response.ContentType = "application/pdf";
        Response.AddHeader("content-disposition", "attachment;filename=ClientList.pdf");
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        StringWriter sw = new StringWriter();
        HtmlTextWriter hw = new HtmlTextWriter(sw);
        HtmlForm hf = new HtmlForm();
        gridconvertPDF.Parent.Controls.Add(hf);
        hf.Attributes["runat"] = "server";
        hf.Controls.Add(gridconvertPDF);
        hf.RenderControl(hw);
        StringReader sr = new StringReader(sw.ToString());
        Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
        pdfDoc.Open();
        Chunk c = new Chunk
        ("PEMINJAMAN INVENTARIS  \n",
        FontFactory.GetFont("Verdana", 25));
        Paragraph p = new Paragraph();
        p.Alignment = Element.ALIGN_CENTER;
        p.Add(c);
        Chunk chunk1 = new Chunk
        ("Rizki Asriningtyas \n",
        FontFactory.GetFont("Verdana", 8));
        Paragraph p1 = new Paragraph();
        p1.Alignment = Element.ALIGN_RIGHT;
        p1.Add(chunk1);
        pdfDoc.Add(p);
        pdfDoc.Add(p1);
        HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
        PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
        pdfDoc.Open();
        htmlparser.Parse(sr);

        pdfDoc.Close();
        Response.Write(pdfDoc);
        Response.End();}

【问题讨论】：

您仅在将所有标题内容添加到pdfDoc 之后关联PdfWriter。因此，所有标题内容都丢失了。您应该先创建一个Document，然后关联一个PdfWriter，然后打开文档，然后将内容添加到文档中。
是的，它的作品，非常感谢:)

标签： asp.net gridview itext

【解决方案1】：

我的错是在将所有标题内容添加到pdf后制作pdfwriter，这是正确的代码

  protected void btnConvertPDF_Click(object sender, EventArgs e)
{
    gridconvertPDF.AllowPaging = false;

    Response.ContentType = "application/pdf";
    Response.AddHeader("content-disposition", "attachment;filename=ClientList.pdf");
    Response.Cache.SetCacheability(HttpCacheability.NoCache);
    StringWriter sw = new StringWriter();
    HtmlTextWriter hw = new HtmlTextWriter(sw);
    HtmlForm hf = new HtmlForm();
    gridconvertPDF.Parent.Controls.Add(hf);
    hf.Attributes["runat"] = "server";
    hf.Controls.Add(gridconvertPDF);
    hf.RenderControl(hw);
    StringReader sr = new StringReader(sw.ToString());
    Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
    PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
    pdfDoc.Open();
    Chunk c = new Chunk
    ("PEMINJAMAN INVENTARIS  \n",
    FontFactory.GetFont("Verdana", 25));
    Paragraph p = new Paragraph();
    p.Alignment = Element.ALIGN_CENTER;
    p.Add(c);
    Chunk chunk1 = new Chunk
    ("Rizki Asriningtyas \n",
    FontFactory.GetFont("Verdana", 8));
    Paragraph p1 = new Paragraph();
    p1.Alignment = Element.ALIGN_RIGHT;
    p1.Add(chunk1);
    pdfDoc.Add(p);
    pdfDoc.Add(p1);
    HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
    htmlparser.Parse(sr);

    pdfDoc.Close();
    Response.Write(pdfDoc);
    Response.End();}

【讨论】：