asp.net - asp button on click inside item template not firing -

not able make work.

<asp:templatefield>     <itemtemplate>         <asp:button id="btnapprove" runat="server" text="approve" onclick ="btnapprove_click" />     </itemtemplate> </asp:templatefield> 

code behind:

protected void btnapprove_click(object sender, eventargs e) {     response.redirect("viewprofile.aspx"); } 

not firing when button clicked. tricks on this?

set enableeventvalidation="false" right @ top in page directive:

<%@ page enableeventvalidation="false" language="c#"...

just beware setting value false can expose website security vulnerabilities.as alternative, instead of setting enableeventvalidation="false" can handle grid views onrowcommand:

.aspx:

<asp:gridview id="gridview1" runat="server" onrowcommand="gridview1_rowcommand">     <columns>         <asp:templatefield>             <itemtemplate>                 <asp:button runat="server" text="approve" commandname="approve" />             </itemtemplate>         </asp:templatefield>     </columns> </asp:gridview> 

code behind:

public partial class delete_me : system.web.ui.page {     protected void page_load(object sender, eventargs e)     {         if (!page.ispostback)//this important.gridview1_rowcommand not fire unless add line         {             var p1 = new person() { name = "person 1" };             var p2 = new person() { name = "person 2" };              var list = new list<person> { p1, p2 };             gridview1.datasource = list;             gridview1.databind();         }      }      protected void gridview1_rowcommand(object sender, gridviewcommandeventargs e)     {         system.diagnostics.debugger.break();     } }  public class person {     public string name { get; set; } }