Home / Community & Support / Developer Productivity Tools Forums / ASP.NET AJAX > ComboBox > Selected Value Resets-radcombobox

• Reeba

  Posted on Feb 8, 2012 (permalink)

  I have a repeater control in which I hava 2 labels and a radcombo box. I am able to populate the labels and the radcombobox.
  
  The way it should work is I need to map a label text to the value in the radcombo box . The problem is even though the value in the combo is selected it keeps reseting to the first item in the drop down list.
  Can someone help me to keep the selected value of the radcombo box selected.See attached jpg.
  
  

  <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">

   <telerik:RadStyleSheetManager ID="RadStyleSheetManager1" runat="server">

      </telerik:RadStyleSheetManager>

      <h2>Server Request Dynamic Reports Creation</h2>

  <p>

        

      <telerik:RadScriptManager ID="rsmDynamicReports" Runat="server">

      </telerik:RadScriptManager>    </p>

    

         

        <telerik:RadAjaxPanel ID="RadDynamicRpt" runat="server" HorizontalAlign="NotSet"  >

           <table id="telerikTable"  >

              <tr valign = "top">

                  <td  > <asp:Label ID="lblRptServer" runat="server" Text="Report Server :" Font-Size="Small"></asp:Label></td>

                              <td colspan= "2" > <asp:DropDownList ID="ddlDynamicRpt" runat="server" AutoPostBack="True" ForeColor="#3366FF" Font-Size="Small">

                                      <asp:ListItem Value="0">--Select One--</asp:ListItem> </asp:DropDownList></td>

           

              </tr> 

              <tr valign="top">

                  <td colspan="3" ><asp:Label ID="lblReportName" runat="server" Text="Select Report :" Font-Size="Small"></asp:Label></td>

            

              </tr>

              <tr valign="top">

                  <td  ></td>

                      <td  colspan="2"> 

              <div style="width: 396px">

                  <asp:Panel ID="panel1" Width="400px" BorderStyle="Solid" BorderWidth ="1pt" ScrollBars="Vertical"    runat="server">         

                  <asp:TreeView ID="tvCatalog" runat="server" AutoGenerateDataBindings="true" 

                          BorderStyle= "none" Height="100px" Font-Size="Small" >

               

                  </asp:TreeView>      

              

                  </asp:Panel>                     

              

          </div></td>

           

       </tr>

        <tr valign="top">

          <td  ><asp:Label ID="label1" runat="server" Text="Report Path :" Font-Size="Small"></asp:Label></td>

          <td colspan="2"><telerik:RadTextBox ID="RadPath" runat="server" Width=398px 

                  ForeColor="#3366FF" BorderStyle="Solid" BorderWidth="1pt" Enabled="False" 

                  Font-Size="Small"></telerik:RadTextBox></td>

            

       </tr>

       <tr valign="top">

       <td></td>

       <td colspan="2">

                   <table>

                    

              <asp:Repeater ID="rptFields" runat="server" >

                  <HeaderTemplate>

                      <tr>

                          <td width="150px">

                              <asp:Label ID="lblReportParam" runat="server"  ForeColor="Blue" Text="Report Parameter" Font-Bold="true"></asp:Label>

                          </td>

                          <td>

                              <asp:Label ID="lblServeRequest" runat="server" ForeColor="Blue"  Text="Server Request Field" Font-Bold="true"></asp:Label>

                          </td>

                      </tr>

                  </HeaderTemplate>

                  <ItemTemplate>

                      <tr>

                          <td>

                              <asp:Label ID="lblReportParamField" runat="server" Text='<%# Bind("RptParam") %>'></asp:Label>

                          </td>

                          <td>

                                

                   <telerik:RadComboBox ID="rcbServerRequest" runat="server"  OnItemDataBound="rptFields_ItemDataBound" >

                     

                   </telerik:RadComboBox>

                     

    

                          </td>

                            

                      </tr>

                  </ItemTemplate>

              </asp:Repeater>

              </table>

    

    

         

       </td>

       </tr> 

       <tr valign = "top">

                  <td  > </td>

                              <td colspan= "2" > 

                                  <asp:Button ID="btnrpt" runat="server" Text="Submit" /></td>

           

              </tr> 

       </table>

          </telerik:RadAjaxPanel>

    

  </asp:Content>

   

  Attached files

  • test.JPG

  Reply

• Princy MVP

  Posted on Feb 9, 2012 (permalink)

  Hello,
  
  I tried to reproduce the same in this version 2011.2.915.35 but no avail. Try the following code.
  aspx:
  

  <asp:Repeater ID="Repeater1" runat="server" DataSourceID="SqlDataSource">

   <HeaderTemplate>

    <asp:Label ID="Label1" runat="server"></asp:Label>

    <asp:Label ID="Label2" runat="server"></asp:Label>

   </HeaderTemplate>

   <ItemTemplate>

    <asp:PlaceHolder ID="pl" runat="server"></asp:PlaceHolder>

    <telerik:RadComboBox ID="RadComboBox1" runat="server" DataSourceID="SqlDataSource1" DataTextField="EmployeeID" DataValueField="EmployeeID">

    </telerik:RadComboBox>

   </ItemTemplate>

  </asp:Repeater>

  
  Thanks,
  Princy.

  Reply


• Reeba

  Posted on Feb 9, 2012 (permalink)

  I am populating the rad combo box  using code behind. The problem arises when I select a value in the combo box it does not keep the value selected, it reverts back to the first value in the radcombo box. I tried a itemdatabound on the repeater but it is giving me errors: Here is the code behind that I use to bind the radcombo box the first time:

  Dim t As New System.Data.DataTable

             t.Columns.Add("RptParam")

             Dim newRow(1) As Object

             'Loop to get parameter names

             For Each rp In parameters

                 If rp.Prompt <> "" Then

                     t.Rows.Add(New Object() {rp.Name})

                 End If

             Next rp

             rptFields.DataSource = t

             rptFields.DataBind()

             Dim oParams As New NameValueCollection

             Dim oDTT As DataTable = GetData(My.Settings.EmailLogging, "usp_GETMapParameter_Details", CommandType.StoredProcedure, oParams)

             For i As Integer = 0 To rptFields.Items.Count - 1

                 Dim rcbServerRequest As RadComboBox = DirectCast(rptFields.Items(i).FindControl("rcbServerRequest"), RadComboBox)

                 rcbServerRequest.DataTextField = "Parameter"

                 rcbServerRequest.DataValueField = "EmailType"

                 rcbServerRequest.DataSource = oDTT

                 rcbServerRequest.DataBind()

             Next

  Reply

• Dimitar Terziev Dimitar Terziev

  Posted on Feb 13, 2012 (permalink)

  Hi,
  
  The experienced behavior usually occurs when you have multiple items with one and the same value. Please ensure that you have unique value for your items, and if the "EmailType" field in your database has duplicating values, you better store this information as custom attribute rather then a value of your items.
  
  More information about the custom attributes could be found here.
  
  All the best,
  Dimitar Terziev
  the Telerik team

  Sharpen your .NET Ninja skills! Attend Q1 webinar week and get a chance to win a license! Book your seat now >>

  Reply

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