Tengo el siguiente Codigo que ordena mi datagrid

[mjesus20]

pero ahora necesito que lo ordene ascendente y descendente que debo agregar para que lo haga

Sub suborden(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridSortCommandEvent Args)
Dim dv As New System.Data.DataView()
Dim strorden As String

dv.Table = MyQueryMethod(DropDownList1.Items(DropDownList1.Se lectedIndex).Text, IIf((campoitem.Text = ""), "", DropDownList3.SelectedItem.Text), IIf((campoequipo.Text = ""), "", DropDownList4.SelectedItem.Text), IIf((campolugar.Text = ""), "", DropDownList5.SelectedItem.Text)).Tables(0)

dv.Sort = e.SortExpression
DataGrid1.DataSource = dv
DataGrid1.DataBind()




campoorden.Text = e.SortExpression + strorden





End Sub