So I am adding a UltraComboEditor to a UltraGrid on the fly as the editor control for a cell. I do this in the after row insert event.

When I set the datasource (an UltraDataSource) of the UltraComboEditor I don't see the items on the UI. It looks as though there is no datasource at all. The datasource is fine as it works if I use the UltraCombo control instead.

What extra step do I need to perform with the UltraComboEditor to get it to show the items from the datasource?

This is the relevent code:

/// <summary>

/// Row Inserted

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void RequestGrid_AfterRowInsert(object sender, RowEventArgs e) {

    // account mappings only past this point

    if(e.Row.Band.Index != 1) {

        return;

    }         

    // get the account number

    string accountNumber = e.Row.ParentRow.Cells["AccountNumber"].Value.ToString();

    // jig up an account

    Account A = new Account(accountNumber);

    // get instances

    ChartDataCache DataCache = ChartDataCache.Instance;

    // get rowsets

    DataRow[] Rowsets = DataCache.AccountDetailData.Tables["Rowsets"].Select("CompanyNumber = '" + A.CompanyNumber + "'");

    // rowset edit control          

    UltraComboEditor RowsetComboEditor = new UltraComboEditor();          

    RowsetComboEditor.Name = Guid.NewGuid().ToString();

    RowsetComboEditor.Visible = false;            

    // set datasource

    RowsetComboEditor.DisplayMember = "RowsetName";

    RowsetComboEditor.ValueMember = "RowsetName";

    // bind

    BindToRows(RowsetComboEditor, Rowsets, "(Select)", "(Select)", "(None Available)");        

    // add it to the grid and set it as the edit control

    RequestGrid.Controls.Add(RowsetComboEditor);                       

    e.Row.Cells["RowsetName"].EditorControl = RowsetComboEditor;                       

}

/// <summary>

/// Bind a menu to a list of data rows

/// </summary>

/// <param name="Menu"></param>

/// <param name="Rows"></param>

private void BindToRows(UltraComboEditor Menu, DataRow[] Rows, string initialText, string initialValue, string emptyVal) {

    try {

        // flag an empty set

        bool emptySet = Rows.Length == 0;

        // anything there?

        if(emptySet) {

            // create data to represent an empty set

            DataTable T = new DataTable("Empty");

            T.Columns.Add(Menu.DisplayMember, typeof(string));

            T.Columns.Add(Menu.ValueMember, typeof(string));

            T.Rows.Add("(None Available)", emptyVal);

            Rows = T.Select();

        }

        // data source instance

        UltraDataSource S = new UltraDataSource();

        // add columns

        foreach(DataColumn C in Rows[0].Table.Columns) {

            S.Rows.Band.Columns.Add(C.ColumnName);

        }

        if(!emptySet) {

            if(Rows.Length > 1) {

                DataRow SelectRow = Rows[0].Table.NewRow();

                SelectRow[Menu.DisplayMember] = initialText;

                SelectRow[Menu.ValueMember] = initialValue;

                S.Rows.Add(SelectRow.ItemArray);

            }

        }

        // add data

        foreach(DataRow R in Rows) {

            S.Rows.Add(R.ItemArray);

        }

        // set data source

        Menu.DataSource = S;

    }

    catch(Exception ex) {

    }

}