Ciao
ho avuto lo stesso problema
ho trovato un ottimo articolo a questo indirizzo www.aspalliance.com/265


Ho Usando Push Model

Ho creato un dataset (dsReportScadenze) e l'ho associato a un report vuoto (ReportAttivita01.rpt).
Attenzione genera il sito prima di associarlo al report !!




Imports CrystalDecisions.Shared
Imports CrystalDecisions.CrystalReports.Engine
Imports System.Data.SqlClient

Partial Class App_FormsUsr_ReportScadenze01
Inherits System.Web.UI.Page


Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not Page.IsPostBack Then
BindReport()
End If

End Sub

Private Sub BindReport()
Dim myConnection As SqlConnection = New SqlConnection

myConnection.ConnectionString = ConfigurationManager.ConnectionStrings("MainConnection").ToString

myConnection.Open()

Dim MyCommand As New SqlCommand()

MyCommand.Connection = myConnection

MyCommand.CommandType = Data.CommandType.StoredProcedure
MyCommand.CommandText = "dbo.proc_apReportScadenze"

Dim p As SqlParameter
p = MyCommand.Parameters.Add("@IdSoggetto", Data.SqlDbType.Int)
p.Value = Session.Item("pIdSoggetto")

p = MyCommand.Parameters.Add("@DataInf", Data.SqlDbType.DateTime)
p.Value = Session.Item("pDateInf")

p = MyCommand.Parameters.Add("@DataSup", Data.SqlDbType.DateTime)
p.Value = Session.Item("pDateSup")

p = MyCommand.Parameters.Add("@TipoScadenza", Data.SqlDbType.Char)
p.Value = Session.Item("pMode")

Dim MyDA As New SqlDataAdapter()

MyDA.SelectCommand = MyCommand

Dim myDS As New dsReportScadenze

MyDA.Fill(myDS, "proc_apReportScadenze")

myConnection.Close()

Dim report As New ReportDocument


report.Load(Server.MapPath("..\reports\ReportAttivita01.rpt"))

report.SetDataSource(myDS)

CrystalReportViewer1.ReportSource = report

End Sub


End Class