how to find the control in gridview row command event

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ASP.NET

i am unable to find the value below is my aspx code

//design code

<asp:CommandField ShowEditButton="True"  ControlStyle-CssClass="control"
                ControlStyle-ForeColor="#3366FF">
<ControlStyle CssClass="control" ForeColor="#3366FF"></ControlStyle>
            </asp:CommandField>

<ItemTemplate >           
            <asp:Label ID="lblstaff" runat="server" Text='<%#Bind("Staff") %>'></asp:Label>
            
            </ItemTemplate>

//cs code

 protected void  // ERROR: Handles clauses are not supported in C#
    GridView1_RowCommand(object sender, System.Web.UI.WebControls.GridViewCommandEventArgs e)
        {
            if (e.CommandName == "Edit")
            {
                Control ctrl = e.CommandSource as Control;
                if (ctrl != null)
                {
                    GridViewRow row = ctrl.Parent.NamingContainer as GridViewRow;
                    //LinkButton fullname = (LinkButton)row.FindControl("lbName");
                    Label lblAssaignedto = (Label)row.FindControl("lblstaff");
                }
                
            }
}

//my problem is i am unable to find the label value....