[Solved] Dropdown targetting issues in GridTemplateColumn

[Josh]

I'm trying to create a dropdown within a GridTemplateColumn. I don't want to use the GridDropDownColumn because I want the dropdown to be available always, not just during the edit call.

Simply put, I can't seem to target the dropdown to set it's selected index / selected value to the one that I desire.

Code snippets to follow.

snippet
Page file.

<rad:RadGrid ID="rgOrder" runat="server" AllowPaging="False" AllowSorting="True" width="400" AllowAutomaticUpdates="true" OnItemCreated="rgItemCreated" OnItemDataBound="rgItemDataBound" OnNeedDataSource="rgNeedDataSource" AllowMultiEdit="True"
                ShowFooter="false" CssClass="radGrid" EnableEmbeddedSkins="false" ShowHeader="true" AutoGenerateColumns="false" AllowMultiRowEdit="true">
                <MasterTableView  EditMode="InPlace" DataKeyNames="ID">
                <ItemStyle CssClass="rgRow" />
                <FooterStyle CssClass="rgFooter"></FooterStyle>
                <Columns>

                    <rad:GridBoundColumn DataField="ID" Display="false" />
                    <rad:GridTemplateColumn HeaderText="Image"  HeaderStyle-HorizontalAlign="left" HeaderStyle-Width="30" ItemStyle-Width="30" AllowFiltering="false">
                        <ItemTemplate>

                            <img src="/images/demo_image_for_oc.jpg" alt="demo image">

                        </ItemTemplate>
                    </rad:GridTemplateColumn>
                    <rad:GridBoundColumn readonly="true" DataField="Description" HeaderText="Description" HeaderStyle-Width="50" ItemStyle-Width="50" SortExpression="Description" HeaderStyle-HorizontalAlign="Left" AllowSorting="true" />
                    <rad:GridTemplateColumn UniqueName="Quantity" HeaderText="Quantity" HeaderStyle-HorizontalAlign="left" HeaderStyle-Width="60" ItemStyle-Width="60" AllowFiltering="false">
                        <ItemTemplate>

                            <asp:DropDownList runat="server" ID="ddlQuantity" DataTextField="Quantity" DataValueField="Quantity" DataSourceID="dataQuantity">
                            </asp:DropDownList>

                            <asp:ObjectDataSource TypeName="Oser.Order" ID="dataQuantity" runat="server" SelectMethod="GetAllQuantities">
                            </asp:ObjectDataSource>

                        </ItemTemplate>

                    </rad:GridTemplateColumn>
                    <rad:GridBoundColumn readonly="true" DataField="Price" HeaderText="Price" HeaderStyle-HorizontalAlign="left" HeaderStyle-Width="35" ItemStyle-Width="35" SortExpression="Price" AllowSorting="true" />
                    <rad:GridBoundColumn readonly="true" DataField="QuantityPerUnit" HeaderStyle-HorizontalAlign="left" HeaderText="PerUnit" HeaderStyle-Width="40" ItemStyle-Width="40" SortExpression="PerUnit" AllowSorting="true" />
                    <rad:GridEditCommandColumn ButtonType="ImageButton" ItemStyle-CssClass="btnEdit" EditImageUrl="~/images/btn_edit.jpg" HeaderStyle-Width="35" ItemStyle-Width="35" />
                    <rad:GridTemplateColumn HeaderText="" HeaderStyle-Width="35" ItemStyle-Width="35" AllowFiltering="false">
                        <ItemTemplate>

                            <asp:ImageButton ID="btnDelete" CssClass="btnDelete" OnClientClick="return confirm('Are you sure you want to delete this item?');" OnCommand="DeleteItem" CommandArgument='<%# Eval("ID") %>' ImageUrl="/images/btn_delete.jpg" runat="server" />

                        </ItemTemplate>
                    </rad:GridTemplateColumn>

                </Columns>
                </MasterTableView>
            </rad:RadGrid>

snippet
.cs file

protected void rgItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e)
    {
        Dictionary<int, int> orderItems = (Dictionary<int, int>)Session["orderItems"];
        if (orderItems != null && orderItems.Count > 0)
        {
            foreach (KeyValuePair<int, int> kvp in orderItems)
            {
                GridDataItem dataItem = e.Item as GridDataItem;
                (DropDownList)dataItem["Quantity"].Controls[0]).SelectedValue = kvp.Value.ToString();

            }
        }
    }

The current form returns a standard, "System.NullReferenceException: Object reference not set to an instance of an object." exception, pointing at the line:

(DropDownList)dataItem["Quantity"].Controls[0]).SelectedValue = kvp.Value.ToString();

Am I accessing the cell incorrectly? I've tried setting the same code under the OnItemCreated method as well, but with the same results.

Thank you for any help you can provide.
-Josh

[Josh]

Figured out my own issue, bah.

I just needed to toss in a check for:

if (e.Item is GridDataItem)

around the dropdownlist clause. I think it was looking in the header as part of it's procedure based on the rest of the code, and obviously not finding a dropdownlist there.