[ASP.NET VB] สอบถามเกี่ยวกับการทำ Dataset Getdata มาใส่ใน Dropdownlist ครับ

 Sub Page_Load(sender As Object, e As EventArgs)
 
        getProvince()
        BindProvince()

        If Page.IsPostBack = False Then
            getProvince()
            BindProvince()
        End If
    End Sub
  
    Sub BindProvince()

    End Sub
    Public Sub getProvince()

        strConnString = ConfigurationManager.ConnectionStrings("conn").ConnectionString
        objConn.ConnectionString = strConnString
        objConn.Open()

        strSQL = "SELECT PROVINCE_ID FROM Province  "
        objCmd = New SqlCommand(strSQL, objConn)

        Dim ds As New DataSet
        Dim da As New SqlDataAdapter(objCmd)
        da.Fill(ds, "Province")
       
       'Present_Province ชื่อ dropdown ในหน้า form

        Present_Province.DataSource = ds
        Present_Province.DataValueField = "PROVINCE_ID"
        Present_Province.DataTextField = "PROVINCE_ID"
        Present_Province.DataBind()
       
    End Sub