I've recently taken over development of a WinForms application using VB.NET.

A form has a RADGridView control (rgvEntities) consisting of the following Columns collection members:
- EntityName: GridViewMultiComboBoxColumn
- City: GridViewTextBoxColumn
- State: GridViewTextboxColumn
- Flag: GridViewCheckBoxColumn
- EntityID: GridViewTextBoxColumn

When the user clicks on the grid view row labelled "Click here to add a new row", the EntityName column displays a combobox for the user to choose the EntityName. When the user clicks on the drop-down arrow of the combobox, the combobox displays the following columns entityid, entityname, city, state.

My issue is that I'd like for the entityid column to not be displayed.

The RADGridView control (rgvEntities) is populated with the following code, that receives the reader as an argument:

  Dim dr As DataRow
  Dim strValues(5) As String

  While reader.Read
    strValues(0) = reader("EntityID")
    strValues(1) = reader("City")
    strValues(2) = reader("State")
    If reader("Flag") = "Y" Then
 strValues(3) = True
    Else
 strValues(3) = False
    End If
    strValues(4) = reader("EntityId")

    rgvEntities.Rows.Add(strValues)
  End While

I think (remember, I didn't code this initially) the entityName column is populated with the following VB.NET code in the Handles rgvEntities.UserAddedRow event handler:

  Dim colEntity As Telerik.WinControls.UI.GridViewComboBoxColumn

  Dim dbconn As New SqlConnection(App.My.Settings.dbConn)
  Dim cmd As New SqlCommand
  Dim daEntity As SqlDataAdapter
  cmd.CommandType = CommandType.Text
  cmd.Connection = dbconn

  Dim sSql As String = ""
  sSql = "select entityid, entityname, city, state from Entities "
  sSql = sSql & " where Entityid > 0 order by 1"
  cmd.CommandText = sSql
  daEntity = New SqlDataAdapter(cmd)
  ds = New DataSet()
  daEntity.Fill(ds)

  colEntity = rgvEntities.Columns("Entity")
  colEntity.DataSource = ds.Tables(0)
  colEntity.DisplayMember = "entityname"
  colEntity.ValueMember = "entityid"

  dbconn.Close()
  colEntity = Nothing
  daEntity = Nothing
  dbconn = Nothing

Where rgvEntities is the RADGridView defined as:
  Friend WithEvents rgvEntities As Telerik.WinControls.UI.RadGridView

Thanks in advance for any help.