GridTemplateColumn with a RadDropDownList in the EditItemTemplate does not have selected value of the DataField

[Gold Systems]

I have a RadGrid. In the RadGrid I have some GridTemplateColumns. In the EditItemTemplate I have a RadDropDownList. The GridTemplateColumn has a DataField defined. My expectation is that when the page loads that the RadDropDownList in the EditItemTemplate should have a SelectedValue that matches the DataField. But the SelectedValue is the default (blank) first item in the dropdown list.  As soon as I select something from the dropdown list everything is happy including the Label that is in the ItemTemplate shows the text value for the item I selected from the dropdown list. 

It works if I use a GridDropDownColumn instead, but I cannot in this case as I need to trigger javascript stuff based on an item selected from the dropdown. 

 

How do I make sure that when the page loads the dropdown list's selected value matches the column's DataField value?  It seems it should work this way automatically.

 

<telerik:RadGrid ID="grdAddresses" runat="server" AutoGenerateColumns="false" DataKeyNames="Uid"
        OnNeedDataSource="grdAddresses_NeedDataSource"
        OnBatchEditCommand="grdAddresses_BatchEditCommand"
        OnPreRender="grdAddresses_PreRender"
        EnableViewState="true"
        AllowSorting="false"
        AllowPaging="false" >
      <MasterTableView EditMode="Batch" BatchEditingSettings-EditType="Row">
        <Columns>
          <telerik:GridButtonColumn CommandName="Delete" ButtonType="ImageButton" UniqueName="DeleteColumn"
              ImageUrl="~/Images/clear-button-24x24.png"
              HeaderStyle-Width="4%" ></telerik:GridButtonColumn>
          <telerik:GridTemplateColumn HeaderText="Type*" DataField="TypeUid" UniqueName="Type" >
            <ItemTemplate>
              <asp:Label runat="server" />
            </ItemTemplate>
            <EditItemTemplate>
              <telerik:RadDropDownList ID="ddlType" runat="server" DataTextField="DropDownListText" DataValueField="Uid" DataFied="TypeUid" >
              </telerik:RadDropDownList>
            </EditItemTemplate>
          </telerik:GridTemplateColumn>
          <telerik:GridBoundColumn HeaderText="Address*" DataField="Address" />
          <telerik:GridBoundColumn HeaderText="Supplemental Address" DataField="AddressSupplemental" />
          <telerik:GridBoundColumn HeaderText="City/Locality" DataField="LocalityName" />
          <telerik:GridTemplateColumn HeaderText="Country" DataField="CountryUid" UniqueName="Country" >
            <ItemTemplate>
              <asp:Label runat="server" Text='<%# Eval("CountryUid") %>' />
            </ItemTemplate>
            <EditItemTemplate>
              <telerik:RadDropDownList ID="ddlCountry" runat="server"
                  DataTextField="DropDownListText" DataValueField="Uid" OnClientSelectedIndexChanged="countrySelectedIndexChanged" >
              </telerik:RadDropDownList>
            </EditItemTemplate>
          </telerik:GridTemplateColumn>
          <telerik:GridTemplateColumn HeaderText="State" DataField="StateUid" UniqueName="State" >
            <ItemTemplate>
              <asp:Label runat="server" Text='<%# Eval("StateUid") %>' />
            </ItemTemplate>
            <EditItemTemplate>
              <telerik:RadDropDownList ID="ddlState" runat="server" OnClientItemsRequesting="stateItemsRequesting"
                  OnClientSelectedIndexChanged="stateSelectedIndexChanged" >
              </telerik:RadDropDownList>
            </EditItemTemplate>
          </telerik:GridTemplateColumn>
          <telerik:GridBoundColumn HeaderText="Postal Code" DataField="PostalCode" />
          <telerik:GridTemplateColumn HeaderText="County" DataField="CountyUid" UniqueName="County" >
            <ItemTemplate>
              <asp:Label runat="server" Text='<%# Eval("CountyUid") %>' />
            </ItemTemplate>
            <EditItemTemplate>
              <telerik:RadDropDownList ID="ddlCounty" runat="server" OnClientItemsRequesting="countyItemsRequesting" >
              </telerik:RadDropDownList>
            </EditItemTemplate>
          </telerik:GridTemplateColumn>
        </Columns>
      </MasterTableView>
    </telerik:RadGrid>

 

[Eyup]

Hello,

The secret property you are looking for is SelectedValue. You can use it with binding expressions:
http://msdn.microsoft.com/en-us/library/vstudio/ms178366(v=vs.100).aspx

Since you are using it within an EditItemTemplate, the choise would be Bind. You can check the following live sample for a practical implementation:
http://demos.telerik.com/aspnet-ajax/grid/examples/data-editing/form-template-update/defaultcs.aspx

I hope this will prove helpful.

Regards,
Eyup
Telerik by Progress