[Solved] ASP.Net Error: webform1 does not contain a definition for Grd1_onrowdeleting

Hello,

Hope you all will be fine. I am new to asp.net and creating GridView. I have added a Delete Row button and getting this error

CS1061: 'webform1_aspx' does not contain a definition for 'Grd1_onrowdeleting' and no accessible extension method 'Grd1_onrowdeleting' accepting a first argument of type 'webform1_aspx' could be found (are you missing a using directive or an assembly reference?)

My Webform1 Code:

<asp:GridView ID="Grd1" runat="server" CellPadding="4" ForeColor="#333333" GridLines="None" Width="1306px"
    OnRowDataBound="OnRowDataBound" OnRowDeleting="Grd1_onrowdeleting" >
    <AlternatingRowStyle BackColor="White" />
    <Columns>
        <asp:CommandField ButtonType="Button" ShowDeleteButton="True" />
    </Columns>
    <EditRowStyle BackColor="#2461BF" />
    <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
    <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
    <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
    <RowStyle BackColor="#EFF3FB" />
    <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
    <SortedAscendingCellStyle BackColor="#F5F7FB" />
    <SortedAscendingHeaderStyle BackColor="#6D95E1" />
    <SortedDescendingCellStyle BackColor="#E9EBEF" />
    <SortedDescendingHeaderStyle BackColor="#4870BE" />
</asp:GridView>

webform.aspx.cs code :

public void Grd1_onrowdeleting(object sender, GridViewDeleteEventArgs e)
{
    int index = Convert.ToInt32(e.RowIndex);
    DataTable dt = ViewState["dt"] as DataTable;
    dt.Rows[index].Delete();
    ViewState["dt"] = dt;
    Gbind();
}

Thanks in advance