problem with combo box in a grid

[mww]

I have a combo box in my grid, when I edit the underlying data I want the current data item to be selected in the combo box

<telerik:GridTemplateColumn UniqueName="CastMember" HeaderText="Cast Member" DataField="CastMemberName"
                        SortExpression="CastMember" ItemStyle-HorizontalAlign="Left">

                        <ItemTemplate>
                            <%#DataBinder.Eval(Container.DataItem, "CastMemberName")%>
                        </ItemTemplate>
                        <EditItemTemplate>
                            <telerik:RadComboBox DataTextField="CastMemberName" Skin="Vista"
                                DataValueField="CastMemberName"
                                ID="RadComboBoxCastMember"
                                runat="server"
                                Width="220px" >
                            </telerik:RadComboBox>
                        </EditItemTemplate>

<ItemStyle HorizontalAlign="Left"></ItemStyle>
                    </telerik:GridTemplateColumn>

in my codebehind I have this

protected void RadGridCastList_ItemCreated(object sender, GridItemEventArgs e)
        {
            if (e.Item is GridDataItem)
            {
                if (e.Item.IsInEditMode)
                {
                    GridEditableItem editItem = e.Item as GridEditableItem;
                    RadComboBox combo = (RadComboBox)editItem.FindControl("RadComboBoxCastMember");
                    combo.DataTextField = "CastMemberName";
                    combo.DataValueField = "CastMemberName";
                    combo.DataSource = castmanager.CastNames();  - a list of cast member names
                    combo.DataBind();
                    try
                    {
                        combo.FindItemByValue(DataBinder.Eval(e.Item.DataItem, "CastMemberName").ToString()).Selected = true;
                    }
                    catch (NullReferenceException ex)
                    {
                        combo.SelectedIndex = 0;
                    }

                    RadNumericTextBox rntb = (RadNumericTextBox)editItem.FindControl("RadNumericTextBoxDisplayOrder");
                    try
                    {
                        rntb.DbValue = (int)DataBinder.Eval(e.Item.DataItem, "DisplayOrder");
                    }
                    catch (Exception ex2)
                    {
                        //
                    }
                }
                else
                {

                }
            }


        }

this line
combo.FindItemByValue(DataBinder.Eval(e.Item.DataItem, "CastMemberName").ToString()).Selected = true;

should select the current name in the combo, but it doesnt.  The first item in the the combo is always set.
Ive used this method many, many times before and its always worked, yet in this case it wont !

Ive checked the value in CastMemberName and its a valid name that is in  the data bound to the combo.
Can anyone see what the problem is ?

[Pavlina]

Hello,

You can use numerous different instances of RadComboBox inside RadGrid. Furthermore, you can load the combobox items on demand. You can also preselect the value to be shown in the combobox when the RadGrid's template is in an edit mode. You can directly bind the SelectedValue inline.
For a live example please review the following link:
Combo in Grid

Greetings,
Pavlina
the Telerik team

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[mww]

thanks, but that doesnt answer my question at all.  Ive used code in the ItemCreated event and want to know why this line of code wont work

combo.FindItemByValue(DataBinder.Eval(e.Item.DataItem, "CastMemberName").ToString()).Selected = true;

can you see why it isnt working ?

[Parth]

Hi,

I use this piece of code to set the combo value, without the try catch block you have.   This may solve your problem, you can pass in the combo and value.

 

private void SetCombotoValue(Telerik.Web.UI.RadComboBox drpList, string dbValue)
        {
            Telerik.Web.UI.RadComboBox l_drpLst = drpList;
            if (dbValue != null)
            {
                Telerik.Web.UI.RadComboBoxItem itemToSelect = l_drpLst.Items.FindItemByValue(dbValue);
                if (itemToSelect != null)
                {
                    l_drpLst.SelectedIndex = l_drpLst.Items.IndexOf(itemToSelect);
                }
                else
                    l_drpLst.SelectedIndex = 0;
            }
            else
                l_drpLst.SelectedIndex = 0;

        }

Thanks,
Parth