Develop Reference

Export to PDF using iText not displaying complete data from GridView

I am trying to export my GridView to PDF. When I click the button I can see that the document downloading with around 977KB but when it has finished download and browse to the download folder the file size then is 1KB.
This is the code I am using:
protected void ExportToPDF(object sender, EventArgs e)
{
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition",
"attachment;filename=GridViewExport.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView1.AllowPaging = false;
GridView1.DataBind();
GridView1.RenderControl(hw);
StringReader sr = new StringReader(sw.ToString());
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
pdfDoc.Open();
htmlparser.Parse(sr);
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();
}
I am not sure what is going wrong here?
Thanks

Converting a modal dialog window to pdf

I'm trying to convert a modal dialog with 3 DataTables to pdf using iTextSharp:
DataTable dtTable = (DataTable)ViewState["LoanPlan"];
DataTable dtTax = (DataTable)ViewState["PlanTaxData"];
DataTable dtPlan = (DataTable)ViewState["PlanAllData"];
I'm using this code to try and accomplish it:
protected void buttonPDF_Click(object sender, EventArgs e)
{
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.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);
pdfDoc.Open();
htmlparser.Parse(sr);
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();
}
But it seems that it's actually trying to convert the whole .aspx page to .pdf format. How should I go about targeting just the modal dialogue or just the 3 DataTables?

Error while converting gridview into pdf format using iTextsharp

I am having gridview in which in few records it has image and in few records it didn't have image which gives error while converting it to pdf format.This code works fine if each row have images but not in case if any record didn't have image. Can anyone suggest me what to do with code so that my error can be resolve
here is my code:
protected void Button1_Click(object sender, EventArgs e)
{
grdview();
string file = "testc" + ".pdf";
string attachment = string.Format("attachment;filename={0}", file);
Response.ClearContent();
Response.AddHeader("content-disposition", attachment);
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.ContentType = "application/pdf";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
Panel1.RenderControl(hw);
StringReader sr = new StringReader(sw.ToString());
iTextSharp.text.Document pdfdoc = new iTextSharp.text.Document();
pdfdoc.SetMargins(0f, 0f, 0f, 0f);
pdfdoc.SetPageSize(iTextSharp.text.PageSize.A2);
HTMLWorker htmlparser = new HTMLWorker(pdfdoc);
PdfWriter.GetInstance(pdfdoc, Response.OutputStream);
pdfdoc.Open();
htmlparser.Parse(sr);
pdfdoc.Close();
Response.Write(pdfdoc);
Response.End();
}
Image what error appears while conversion

how to export gridview image and data to PDF using asp.net or Export gridview data to PDF using asp.net

protected void Button4_Click(object sender, EventArgs e)
{
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition","attachment;filename=GridViewExport.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView1.AllowPaging = false;
GridView1.DataBind();
GridView1.RenderControl(hw);
StringReader sr = new StringReader(sw.ToString());
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
pdfDoc.Open();
htmlparser.Parse(sr);//this is the error line
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();
}

You will have to use 3rd party control for that
Try using iText Sharp library its free
for more info go here

export gridview data to pdf

its throwing error like document has no pages.
i have written code like this.
protected void Button4_Click(object sender, EventArgs e)
{
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition","attachment;filename=GridViewExport.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView1.AllowPaging = false;
GridView1.DataBind();
GridView1.RenderControl(hw);
StringReader sr = new StringReader(sw.ToString());
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
pdfDoc.Open();
htmlparser.Parse(sr);
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();
}
can any1 help me on this

I suggest reading the documentation of the library you are using.
The error suggests that you need to add a page to the new document before you try and add content to it.
In some of the PDF libraries you add a page and then need to set it as the current page before adding content.