VB.NET ขอโค้ด Dropdownlist ให้ดึงข้อมูลจาก Table หน่อยครับ

            objCom = New OleDbCommand("SELECT * FROM user_mg", dbCon)
            DT = New DataTable
            DT.Load(objCom.ExecuteReader)
            DropDownList1.DataSource = DT
            DropDownList1.DataTextField = "ID"
            DropDownList1.DataValueField = "Name"
            DropDownList1.DataBind()

Sub DropDown()

        Dim de As New SqlConnection(ConfigurationManager.ConnectionStrings("ITRequest").ConnectionString)
        de.Open()

        Dim Cmd As New SqlCommand("Select * From User_MG", de)
        Dim dt As New DataTable
        dt.Load(Cmd.ExecuteReader)
drop.DataSource = dt
        drop.DataTextField = "Manager_name"
        drop.DataValueField = "MG_id"
        drop.DataBind()
 drop.SelectedIndex = drop.Items.IndexOf(drop.Items.FindByText(" "))
de.Close()
    End Sub

        drop.DataSource = dt
        drop.DataTextField = "Manager_name"
        drop.DataValueField = "MG_id"
        drop.DataBind()
        drop.Items.Insert(0, new ListItem("Select Manager",string.Empty)); // เพิ่มตรงนี้ครับ