the print code is not work for two check boxes in itextsharp

HI which grid is not working

protected void Button6_Click1(object sender, EventArgs e)
{
for (int i = 1; i <= checkcatg.Items.Count; i++)
{
if (checkcatg.Items[0].Selected)
{
GridView1.Visible = true;
SqlConnection conn = new SqlConnection("server=.;database=project;uid=sa;pwd=abc;");
SqlCommand cmd = new SqlCommand("select * from pantsmeasurements where pant_id=(select MAX(pant_id) from pantsmeasurements)", conn);
DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
//printpants();
PdfPTable pdfTable = new PdfPTable(GridView1.HeaderRow.Cells.Count);
foreach (GridViewRow gridViewRow in GridView1.Rows)
{
foreach (TableCell tableCell in gridViewRow.Cells)
{
PdfPCell pdfcell = new PdfPCell(new Phrase(tableCell.Text));
pdfTable.AddCell(pdfcell);
}
}
Document pdfDocument = new Document(PageSize.A4, 10f, 10f, 10f, 10f);
PdfWriter.GetInstance(pdfDocument, Response.OutputStream);
pdfDocument.Open();
pdfDocument.Add(pdfTable);
pdfDocument.Close();
Response.ContentType = ("application/pdf");
Response.AppendHeader("content-dispostion", "attachment;filename=employees.pdf");
Response.Write(pdfDocument);
Response.Flush();
Response.End();
}
else if (checkcatg.Items[1].Selected)
{
GridView2.Visible = true;
SqlConnection conn = new SqlConnection("server=.;database=project;uid=sa;pwd=abc;");
SqlCommand cmd = new SqlCommand("select * from shirtsmeasurements where shirt_id=(select MAX(shirt_id) from shirtsmeasurements)", conn);
DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);
GridView2.DataSource = ds;
GridView2.DataBind();
//printshirts();
PdfPTable pdfTable = new PdfPTable(GridView2.HeaderRow.Cells.Count);
foreach (GridViewRow gridViewRow in GridView2.Rows)
{
foreach (TableCell tableCell in gridViewRow.Cells)
{
PdfPCell pdfcell = new PdfPCell(new Phrase(tableCell.Text));
pdfTable.AddCell(pdfcell);
}
}
Document pdfDocument = new Document(PageSize.A4, 10f, 10f, 10f, 10f);
PdfWriter.GetInstance(pdfDocument, Response.OutputStream);
pdfDocument.Open();
pdfDocument.Add(pdfTable);
pdfDocument.Close();
Response.ContentType = ("application/pdf");
Response.AppendHeader("content-dispostion", "attachment;filename=employees.pdf");
Response.Write(pdfDocument);
Response.Flush();
Response.End();
}