Dropdown should show only the display member

Question

I have bound a collection to ultracombo and I have specified the value member and display member. The collections have many columns, N

Answer 1

Here is an extension method that will hide all columns besides the DisplayMember column.

Public Sub ShowOnlyDisplayMemberColumn(this As UltraCombo)
    Dim columnName As String = this.DisplayMember
    For Each band As UltraGridBand In this.DisplayLayout.Bands
        For i As Integer = 0 To band.Columns.Count - 1
            Dim column As UltraGridColumn = band.Columns(i)
            If (column.Key = columnName) Then
                column.Hidden = False
                column.Width = this.Width
            Else
                column.Hidden = True
            End If
        Next
    Next
End Sub