Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load     
      Dim l_Tdoc As doc= New Tdoc()
      If Not Me.Page.IsPostBack Then           
            me.cmb_cod_tipoDocumento.DataSource = doc.load()
            me.cmb_cod_tipoDocumento.DataTextField="DES"
            me.cmb_cod_tipoDocumento.DataValueField="ID"
            me.cmb_cod_tipoDocumento.DataBind()
      End If
End Sub