I want to bring/display the sql data from one column to combobox as a drop downdown list in vb.net. Hoe do i do that?

Dim strSQL As String = "SELECT * FROM RegionSiteCampus"
        Dim SqlComm As New System.Data.SqlClient.SqlCommand(strSQL, conn)
        Dim DR As System.Data.SqlClient.SqlDataReader
        conn.Open()
             DR = SqlComm.ExecuteReader
             Do While DR.Read()
                Combo_Region.Items.Add(DR.Item("Region"))
                Combo_Site.Items.Add(DR.Item("Site"))

Any suggestions for better way to do it? I want the items in each column not to be repeated.


Thank you