How to choose radcombobox 1 and then clear radcombobox 2 For radcombobox in radgrid

[Cholticha]

 

Hi!

How to choose radcombobox1 and then clear radcombobox 2  For radcombobox in radgrid

• I try to put javascript, but it does not work, and then find that find combobox2 not found.
• Here is my jquery ajax function:

function OnClientSelectedIndexChanged(sender, eventArgs) {

 

               var SenderId =  sender.get_id();

               var RadTextBox1 = $("#" + SenderId).get(0);

               var RadTextBox2 = $("#" + SenderId.replace("combo_Examtion", "combo_ExamtionCount")).get(0);

               //// for telerik /radcontrols

               var RadTextBox2 = $telerik.findTextBox(SenderId.replace("combo_Examtion", "combo_ExamtionCount"));

               

 

           }

<telerik:GridTemplateColumn HeaderText="ข้อสอบ" HeaderStyle-Width="200px" UniqueName="NameExaminationID" DataField="NameExaminationID">

                           <ItemTemplate>

                               <asp:Label runat="server" ID="lblNameExaminationID" Text='<%# Eval("NameExamination")%>'></asp:Label>
                           </ItemTemplate>

                           <EditItemTemplate>

                               <div style="width: 190px; float: left;">
                                   <telerik:RadComboBox ID="Radcombobox1" runat="server" AllowCustomText="True" Filter="Contains" OnClientSelectedIndexChanged="OnClientSelectedIndexChanged"
                                       OnItemsRequested="combo_Examtion_ItemsRequested"
                                       Skin="Vista" DropDownWidth="250px" Width="155px" Height="150px" EnableVirtualScrolling="true" HighlightTemplatedItems="true" EnableLoadOnDemand="True" OnClientDropDownOpened="MyClientBlur">
                                       <ItemTemplate>
                                           <table style="width: 200px;">
                                               <tr>
                                                   <td style="width: 150px;">
                                                       <%# DataBinder.Eval(Container.DataItem, "NameExamination")%>
                                                   </td>
                                               </tr>
                                           </table>
                                       </ItemTemplate>
                                   </telerik:RadComboBox>


                               </div>
                           </EditItemTemplate>

                       </telerik:GridTemplateColumn>
                       <telerik:GridTemplateColumn HeaderText="ชุดที่" HeaderStyle-Width="80px" UniqueName="Examination_No" DataField="Examination_No">
                           <ItemTemplate>
                               <asp:Label runat="server" ID="lblExamination_No" Text='<%# Eval("Examination_No")%>'></asp:Label>
                           </ItemTemplate>
                           <EditItemTemplate>


                               <div style="width: 190px; float: left;">
                                   <telerik:RadComboBox ID="Radcombobox2" runat="server" AllowCustomText="True" Filter="Contains" OnItemsRequested="combo_ExamtionCount_ItemsRequested"
                                       Skin="Vista" DropDownWidth="100px" Width="70px" Height="150px" EnableVirtualScrolling="true" HighlightTemplatedItems="true" EnableLoadOnDemand="True" OnClientDropDownOpened="MyClientBlur">
                                       <ItemTemplate>
                                           <table style="width: 50px;">
                                               <tr>
                                                   <td style="width: 50px;">
                                                       <%# DataBinder.Eval(Container.DataItem, "Examination_No")%>
                                                   </td>
                                               </tr>
                                           </table>
                                       </ItemTemplate>
                                   </telerik:RadComboBox>

                               </div>

                           </EditItemTemplate>


                       </telerik:GridTemplateColumn>