View Database Data Using ComboBox

View Database Data Using ComboBox:

Imports System.Data

Imports Oracle.DataAccess.Client 

Imports Oracle.DataAccess.Types

Using conn = root.Opencon()

            Dim da As New OracleDataAdapter("select * from reg_details", conn)

            Dim table As New DataTable()

            da.Fill(table)

            ComboBox3.DataSource = New BindingSource(table, Nothing)

            ComboBox3.DisplayMember = "REGNO"

            ComboBox3.ValueMember = "REGNO"  

End Using