Validation Controls giving exception when used with GridView on Delete click

Question

How to call javascript function when using validation controls on GridView.

I am trying to call confirmDelete function on delete button of GridViews delete button. I dont have a code as of now. But when I was trying it was throwing an exception at javascript

Answer 1

Here is a sample code how I use javascript confirm on GridView:

<asp:GridView ID="gv" runat="server" >
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:ImageButton ID="btnDelete" runat="server" OnCommand="btnDelete_Command" 
                    CommandArgument='<%# Eval("Id") %>' ImageUrl="~/img/delete.png" 
                    OnClientClick="return btnDelete_Click()"/>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>
<script type="text/javascript">
    function btnDelete_Click() {
        return window.confirm('You sure?');
    }
</script>

Code behind:

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        gv.DataSource = list;
        gv.DataBind();
    }
}

protected void btnDelete_Command(object sender, CommandEventArgs e)
{
    // Delete Operation.
}

I hope it will be helpful.