Griddropdown column not dispalaying value in read only mode

[Michael]

Guys, i have defined a griddropdowncolumn but for some reason it is not displaying the bound value. When it edit mode, i populate the dropdown with no issues. Here is my column definition in the front end:

<telerik:GridDropDownColumn ListTextField="LotDetail.LotNumber" ListValueField="LotDetail.LotNumber" DataType="System.String"
            FilterControlAltText="Lot Number" HeaderText="Lot Number"
            SortExpression="LotDetail.LotNumber" UniqueName="LotNo" ReadOnly="true">
        </telerik:GridDropDownColumn>

If anyone could shed any light on this it would be great. My Telerik.Web.UI.dll version is 2011.2.915.40.

[Shinu]

Hello Michael,

I cannot find any DataSource associated with the dropdown in browser mode. In browser mode, GridDropDownColumn looks and behaves like a standard GridBoundColumn. When in edit mode, however, it displays a drop-down control for each edited cell in the column. Also check the following help documentation.
Column Types.

-Shinu

[Michael]

Shinu, my data is populated via the needdatasource method. All other fields are populated. If i turn the column into a GridBoundColumn it displays the value. Do i need extra code in the code behind to populate the drop down in read only mode? I looked at the examples on the telerik site and the dropdown are populated in read only mode without any extra code in the code behind.

Here is my code for populating in edit mode:

if (e.Item is GridEditableItem && e.Item.IsInEditMode)

       {

 

           GridEditableItem editedItem = e.Item as GridDataItem;

           GridEditManager editMan = editedItem.EditManager;

           GridDropDownListColumnEditor LotNoEditor = (GridDropDownListColumnEditor)(editMan.GetColumnEditor("LotNo"));

           LotManager lotManager = new LotManager();

           LotNoEditor.DataSource = lotManager.GetLot((Session["User"] as User).partcipant.PartNumber);

           LotNoEditor.DataTextField = "LotNumber";


           LotNoEditor.DataValueField = "LotNumber";

           LotNoEditor.DataBind();

           LotNoEditor.ComboBoxControl.AllowCustomText = false;

           LotNoEditor.ComboBoxControl.EmptyMessage = "Choose Lot from list";

           LotNoEditor.ComboBoxControl.Filter = RadComboBoxFilter.Contains;

           //lotManager.GetLot(Partnumber);

       }

[Michael]

I finally got this sorted, don't know if this is the correct way to do it but it works for me(
in itemdatabound:

if (e.Item is GridDataItem)
        {
            GridDataItem dataItem = e.Item as GridDataItem;
            if (e.Item.DataItem != null && e.Item.DataItem is FixedMeanAndSD)
            {
                FixedMeanAndSD row = (FixedMeanAndSD)e.Item.DataItem;
                dataItem["LotNo"].Text = row.LotDetail.LotNumber;
            }



        }