2014年8月26日 星期二

ASP.NET 將網頁輸出PDF

ASP.NET PDF
將網頁物件輸出至PDF，以下使用Table為例。

1.Download the itextsharp.dll from Internet.
2.Reference of  itextsharp.dll

 3.use following references of itextsharp.dll 
  1. using iTextSharp.text;
  2. using iTextSharp.text.pdf;
  3. using iTextSharp.text.html.simpleparser;
4.Now the whole code of tsPDF.aspx.cs page will be as follows:
  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Web;
  5. using System.Web.UI;
  6. using System.Web.UI.WebControls;
  7. using System.Configuration;
  8. using System.Data.SqlClient;
  9. using System.IO;
  10. using System.Web;
  11. using iTextSharp.text;
  12. using iTextSharp.text.pdf;
  13. using iTextSharp.text.html.simpleparser;  
  14.  
  15. public partial class Test_tsPDF : System.Web.UI.Page
  16. {
  17.     protected void Page_Load(object sender, EventArgs e)
  18.     {
  19.         
  20.     }
  21.  
  22.     public override void VerifyRenderingInServerForm(Control control)
  23.     {
  24.         //required to avoid the runtime error "  
  25.         //Control 'GridView1' of type 'GridView' must be placed inside a form tag with runat=server."  
  26.     }  
  27.  
  28.     private void ExportGridToPDF()
  29.     {
  30.         try
  31.         {
  32.             Response.ContentType = "application/pdf";
  33.             Response.AddHeader("content-disposition", "attachment;filename=Vithal_Wadje.pdf");
  34.             Response.Cache.SetCacheability(HttpCacheability.NoCache);
  35.             StringWriter sw = new StringWriter();
  36.             HtmlTextWriter hw = new HtmlTextWriter(sw);
  37.             //GridView1.RenderControl(hw);
  38.             Table1.RenderControl(hw);
  39.             StringReader sr = new StringReader(sw.ToString());
  40.             Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
  41.             HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
  42.             PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
  43.             pdfDoc.Open();
  44.             htmlparser.Parse(sr);
  45.             pdfDoc.Close();
  46.             Response.Write(pdfDoc);
  47.             Response.End();
  48.             GridView1.AllowPaging = true;
  49.             GridView1.DataBind();
  50.         }
  51.         catch (Exception)
  52.         {
  53.             
  54.             throw;
  55.         }
  56.         
  57.     }
  58.  
  59.     protected void Button1_Click(object sender, EventArgs e)
  60.     {
  61.         ExportGridToPDF();  
  62.     }
  63. }
5.Now the whole code of tsPDF.aspx page will be as follows:
  1. <body>
  2.     <form id="form1" runat="server">
  3.     <div>
  4.         <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
  5.         <asp:GridView ID="GridView1" runat="server"></asp:GridView>
  6.         <asp:Table ID="Table1" runat="server">
  7.             <asp:TableRow>
  8.                 <asp:TableCell>Cell 1</asp:TableCell>
  9.                 <asp:TableCell>Cell 2</asp:TableCell>
  10.                 <asp:TableCell>Cell 3</asp:TableCell>
  11.                 <asp:TableCell>Cell 4</asp:TableCell>
  12.                 <asp:TableCell>Cell 5</asp:TableCell>
  13.                 <asp:TableCell>Cell 6</asp:TableCell>
  14.             </asp:TableRow>
  15.         </asp:Table>
  16.     </div>
  17.     </form>
  18. </body>

Reference website:
http://www.c-sharpcorner.com/UploadFile/0c1bb2/export-gridview-to-pdf/
http://www.cc.ntu.edu.tw/chinese/epaper/0015/20101220_1509.htm
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