grid hierarchy problem

[mww]

I have a grid with a master and detail table.  The master table has several rows.  When I click a row to expand the detail table, in the ItemDataBound Event I have some code that populates a dropdown in the detail table, as below

if ("ArtistCategories".Equals(e.Item.OwnerTableView.Name))
            {
                if (e.Item is GridEditableItem && e.Item.IsInEditMode)
                {

                    GridDataItem dataitem = e.Item.OwnerTableView.ParentItem;
                    Hashtable values = new Hashtable();
                    dataitem.ExtractValues(values);
                    object Objgenre = values["Genre"];


                    GridEditableItem _item = (GridEditableItem)e.Item;
                    Telerik.Web.UI.RadComboBox cb = (Telerik.Web.UI.RadComboBox)_item["ArtistCategory"].FindControl("RadComboBoxCategories");

                    string genre = Objgenre.ToString();
                    cb.DataSource = lookupmanager.CategoryByGenre(genre, this.RadComboBoxType.SelectedValue);
                    cb.DataTextField = "Category";
                    cb.DataValueField = "Category";
                    cb.DataBind();

                    try
                    {
                        Studio1DBObjects.SecondaryCategory sg = (Studio1DBObjects.SecondaryCategory)e.Item.DataItem;
                        string category = sg.Category;
                        int index = cb.FindItemIndexByValue(category);
                        cb.SelectedIndex = index;
                    }
                    catch (Exception ex)
                    {
                        //
                    }

                }
            }

The contents of the drop down are determined by 2 values, a 'type' which is a drop down on the main page, and 'genre' which is a column in the master table in the grid.  After searching the forums, the only method I could find to obtain this value from the master table is by using a hashtable, like so

Hashtable values = new Hashtable();

dataitem.ExtractValues(values);

object Objgenre = values["Genre"];

After stepping through the code, the hash table is always empty (its count is zero), yet the master table has data.  How Can I obtain the data I need from the selected row in the master table ??  Is there another way ?

[Princy]

Hello Mark,

You can try out the following code to access the MasterTableView item when an item in the DetailTable is in EditMode:
cs:

if ("ArtistCategories".Equals(e.Item.OwnerTableView.Name))
            {
                if (e.Item is GridEditableItem && e.Item.IsInEditMode)
                {

                    GridEditableItem _item = (GridEditableItem)e.Item;
                    GridDataItem parentItem = (GridDataItem)editItem.OwnerTableView.ParentItem;
                    string string = parentItem["Genre"].Text;

                  }
             }

Thanks
Princy.