Exception - Control 'GridView1' of type 'GridView' must be placed inside a form tag with runat=server.
Author:Mudassar Khan
Server Error in '/ASP.Net' Application.
Control 'GridView1' of type 'GridView' must be placed inside a form tag with runat=server.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Web.HttpException: Control 'GridView1' of type 'GridView' must be placed inside a form tag with runat=server.
Cause
The above exception occurs when one tries to export a GridView control to Word, Excel, PDF, CSV or any other formats. Here the .net compiler thinks that the control is not added to the form and is rendered, hence it throws this error even if your GridView control is inside a form with runat = “server”.
Solution
1. Tell the compiler that the control is rendered explicitly by overriding the VerifyRenderingInServerForm event. You can do that by adding the event to tha code behind file. Refer below
C#
public override void VerifyRenderingInServerForm(Control control)
{
/* Verifies that the control is rendered */
}
VB.Net
Public Overloads Overrides Sub VerifyRenderingInServerForm ByVal control As Control)
' Verifies that the control is rendered
End Sub
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