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

Question

Not able to make this 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 even firing when button is clicked. any tricks on this?

Answer 1

Set EnableEventValidation="false" right at the top in your Page directive:
<%# Page EnableEventValidation="false" Language="C#"...
Just beware that setting this value to false can expose your website to security vulnerabilities.As an alternative, instead of setting EnableEventValidation="false" you can handle the 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 IS IMPORTANT.GridView1_RowCommand will not fire unless you add this 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; }
}

Answer 2

You Just put on your gridview.
<asp:TemplateField>
<ItemTemplate>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click"/>
</ItemTemplate>
</asp:TemplateField>
Also put code behind
protected void Button1_Click(object sender, EventArgs e)
{
Response.Redirect("WebForm1.aspx");
}
Try!!!! it's working fine...