Solved

Control 'GridView1' of type 'GridView' must be placed inside a form tag with runat=server.

Posted on 2006-10-19
5
8,414 Views
Last Modified: 2013-12-03
Hi,

I am getting the following error:

Control 'GridView1' of type 'GridView' must be placed inside a form tag with runat=server.

below is the code:

protected void Page_Load(object sender, EventArgs e)
    {
        System.IO.StringWriter tw = new System.IO.StringWriter();
        System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);

        DataBridge.PrismPanc pp = new PrismPanc();
        System.Data.DataTable dtExport = pp.GetTodaysData();
        GridView1.DataSource = dtExport;
        GridView1.DataBind();

        Excel.Application oXl;
        Excel._Workbook oWb;
        Excel._Worksheet oSheet;

        hw.WriteLine("<b><u><font size='5'>" +
            "Report for the Fiscal year: </font></u></b>");
        hw.WriteLine("<br>&mp;nbsp;");

        GridView1.HeaderStyle.Font.Bold = true;
        GridView1.DataBind();
        GridView1.RenderControl(hw);   //<-----generating the above error message

        // Write the HTML back to the browser.
        Response.ContentType = "application/vnd.ms-excel";
        this.EnableViewState = false;
        Response.Write(tw.ToString());
        Response.End();
0
Comment
Question by:brdrok
5 Comments
 
LVL 10

Expert Comment

by:gangwisch
ID: 17769538
you need to post your designer code but must likely you need to have it in this format
<form runat="server">
<asp:gridview>...
</form>
0
 
LVL 7

Author Comment

by:brdrok
ID: 17769577
<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!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>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        &nbsp;</div>
        <asp:GridView ID="GridView1" runat="server" Height="263px" Width="633px">
        </asp:GridView>
    </form>
</body>
</html>

The GridView is within the <form...> and </form> tags.
0
 
LVL 20

Accepted Solution

by:
brwwiggins earned 500 total points
ID: 17770008
0
 
LVL 12

Expert Comment

by:craskin
ID: 17770476
you're databinding gridview1 twice.
0
 
LVL 7

Author Comment

by:brdrok
ID: 17772967
I am not exactly sure what this whole enableEventValidation bit is all about but turning it to false seems to do the trick.  

enableEventValidation ="false"
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Just a quick little trick I learned recently.  Now that I'm using jQuery with abandon in my asp.net applications, I have grown tired of the following syntax:      (CODE) I suppose it just offends my sense of decency to put inline VBScript on a…
I recently went through the process of creating a Calendar Control of events with the basis of using a database to keep track of the dates that are selectable, one requirement was to have the selected date pop-up in a simple lightbox.  At first this…
Excel styles will make formatting consistent and let you apply and change formatting faster. In this tutorial, you'll learn how to use Excel's built-in styles, how to modify styles, and how to create your own. You'll also learn how to use your custo…
A company’s greatest vulnerability is their email. CEO fraud, ransomware and spear phishing attacks are the no1 threat to a company’s security. Cybercrime is responsible for the largest loss of money to companies today with losses projected to r…

914 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now