Compiler Error Message: CS1061: 'def2_aspx' does not contain a definition for 'DropDownList2_SelectedIndexChanged' and no extension method 'DropDownList2_SelectedIndexChanged' accepting a first argument of type 'def2_aspx' could be found (are you missing a using directive or an assembly reference?)
Source Error:
Line 55: </td> Line 56: <td class="auto-style5">
Line 57: <asp:DropDownList ID="DropDownList2" runat="server" Height="18px" Width="149px" OnSelectedIndexChanged="DropDownList2_SelectedIndexChanged" >
Line 58: </asp:DropDownList>
Line 59: </td>