Drop Down List

[mcp07]

Perchè non mi carica i dati ?
Dove sbaglio ?

If Not IsPostBack Then

            Dim conn As OleDbConnection
            Dim cmdSelect As OleDbCommand
            Dim strSelect As String
            Dim dtrCorsi As OleDbDataReader

            conn = New OleDbConnection("PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Documents and Settings\csl\Documenti\Visual Studio Projects\Becherelli\esame.mdb")

            strSelect = "Select Id_Corso, Nome_Corso From Corsi"
            cmdSelect = New OleDbCommand(strSelect, conn)
            conn.Open()

            dropCorsi.DataSource = cmdSelect.ExecuteNonQuery
            dropCorsi.DataValueField = "Id_Corso"
            dropCorsi.DataTextField = "Nome_Corso"
            dropCorsi.DataBind()

            conn.Close()

        End If