Problem : Registerforeventvalidation can only be called during render()
Solution
Set
EventValidation to false for the page and also override VerifyRenderingInServerForm in code behind like bellow
public override void VerifyRenderingInServerForm(Control control)
{
}
Refer bellow post
http://www.aspsnippets.com/Articles/Export-GridView-To-WordExcelPDFCSV-in-ASP.Net.aspx
Solution
Set
EventValidation to false for the page and also override VerifyRenderingInServerForm in code behind like bellow
public override void VerifyRenderingInServerForm(Control control)
{
}
Refer bellow post
http://www.aspsnippets.com/Articles/Export-GridView-To-WordExcelPDFCSV-in-ASP.Net.aspx
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