why the error is giving in the line gvdetails.RenderControl(htw);

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Why error is giving int the line gvdetails.RenderControl(htw);

My cs code is given below

C#

Response.ClearContent();
Response.Buffer = true;
Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "Customers.xls"));
Response.ContentType = "application/ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
gvdetails.AllowPaging = false;
gvdetails.DataBind();
//Change the Header Row back to white color
gvdetails.HeaderRow.Style.Add("background-color", "#FFFFFF");
//Applying stlye to gridview header cells
for (int i = 0; i < gvdetails.HeaderRow.Cells.Count; i++)
   {
   gvdetails.HeaderRow.Cells[i].Style.Add("background-color", "#507CD1");
   }
int j = 1;
//This loop is used to apply stlye to cells based on particular row
foreach (GridViewRow gvrow in gvdetails.Rows)
   {
   //gvrow.BackColor = Color.White;
   if (j <= gvdetails.Rows.Count)
      {
      if (j % 2 != 0)
         {
         for (int k = 0; k < gvrow.Cells.Count; k++)
            {
            gvrow.Cells[k].Style.Add("background-color", "#EFF3FB");
            }
         }
      }
   j++;
   }
gvdetails.RenderControl(htw);
Response.Write(sw.ToString());
Response.End();
}

[edit]Code block added, "Treat my content as plain text..." option disabled, code formatted - OriginalGriff[/edit]

Posted 30-Dec-11 21:27pm

Janardan Pandey

Updated 30-Dec-11 21:33pm

OriginalGriff

v2

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Comments

OriginalGriff 31-Dec-11 3:34am

What error are you getting?

Janardan Pandey 31-Dec-11 3:40am

I am getting error gvdetails of GridView must be place inside the form tag.But My grid View already placed in Form tag with runnat = server

See my HTML CODE

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Export Data from Grid to Word and Excel.aspx.cs" Inherits="Export_Data_from_Grid_to_Word_and_Excel" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div align="center">

<br />
<br />
<asp:ImageButton ID="btWord" runat="server" Width="98px"
ImageUrl="~/word_icon[1].png" Height="93px" onclick="ImageButton1_Click" />

<asp:ImageButton ID="btExcel" runat="server" Width="119px"
ImageUrl="~/excel[1].gif" Height="108px" onclick="ImageButton2_Click" />
<asp:GridView ID="gvdetails" runat="server" AllowPaging="True"
AutoGenerateColumns="False" DataKeyNames="qid"
DataSourceID="SqlDataSource1" BackColor="White" BorderColor="#E7E7FF"
BorderStyle="None" BorderWidth="1px" CellPadding="3" GridLines="Horizontal"
Width="260px">
<alternatingrowstyle backcolor="#F7F7F7">
<columns>
<asp:BoundField DataField="qid" HeaderText="qid" SortExpression="qid"
ReadOnly="True" />
<asp:BoundField DataField="qname" HeaderText="qname"
SortExpression="qname" />
<asp:BoundField DataField="sid" HeaderText="sid" SortExpression="sid" />
<asp:BoundField DataField="aid" HeaderText="aid" SortExpression="aid" />
<asp:BoundField DataField="cid" HeaderText="cid" SortExpression="cid" />
<asp:BoundField DataField="class" HeaderText="class" SortExpression="class" />

<footerstyle backcolor="#B5C7DE" forecolor="#4A3C8C">
<HeaderStyle BackColor="#4A3C8C" Font-Bold="True" ForeColor="#F7F7F7" />
<PagerStyle BackColor="#E7E7FF" ForeColor="#4A3C8C" HorizontalAlign="Right" />
<rowstyle backcolor="#E7E7FF" forecolor="#4A3C8C">
<SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="#F7F7F7" />
<sortedascendingcellstyle backcolor="#F4F4FD">
<sortedascendingheaderstyle backcolor="#5A4C9D">
<sorteddescendingcellstyle backcolor="#D8D8F0">
<sorteddescendingheaderstyle backcolor="#3E3277">

<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:tuitionConnectionString %>"
SelectCommand="SELECT * FROM [question]">
<br />

</div>
</form>
</body>
</html>

AND CS CODE IS GIVEN BELOW

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;

public partial class Export_Data_from_Grid_to_Word_and_Excel : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}
protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
{
gvdetails.AllowPaging = false;

gvdetails.DataBind();

Response.ClearContent();

Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "Customers.doc"));

Response.Charset = "";

Response.ContentType = "application/ms-word";

StringWriter sw = new StringWriter();

HtmlTextWriter htw = new HtmlTextWriter(sw);

gvdetails.RenderControl(htw);

Response.Write(sw.ToString());

Response.End();

Janardan Pandey 31-Dec-11 5:27am

Unable to understand and do wt u saying

1 solution

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OriginalGriff · Answer 1 · 2011-12-30T21:58:00

Solution 1

Answered to remove from unanswered list - question is duplicated with more information.

Please do not delete - I want the OP to see the difference between his code formatted and unformatted.

Posted 30-Dec-11 21:58pm

OriginalGriff

Comments

Janardan Pandey 31-Dec-11 5:27am

ok