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http://forums.asp.net/thread/1364045.aspx

راه حل:


I found the problem:



Using Crystal Reports for Visual Studio 2005, when you create a report it won't add a class which you could create a report instance with.

So you have to add:



Public Class myReport



Inherits ReportClass



Public Sub New()



MyBase.New()



End Sub





Public Overrides Property ResourceName() As [String] 



Get 



Return "myReport.rpt" 



End Get 



Set(ByVal value As [String]) 



'Do nothing 



End Set 



End Property 

End



Class 

 



In order to do:



 



Dim



myReportObject As New myReport 

 



then you can do whatever you want with your instace, like setting parameters if you are using a stored procedure to populate your report



 



Dim



parm As New ParameterDiscreteValue() 



Dim values As New ParameterValues() 

parm.Value = strValue



values.Add(parm)



'This next line will set the value for your parameter avoiding the extremely anoying page that prompts for the parameters



myReportObject .DataDefinition.ParameterFields.Item(0).ApplyCurre  ntValues(values)



'This lines will avoid the second most anoying page that prompts for user name and password if you are not using a trusted connection



myReportObject .SetDatabaseLogon(ConfigurationManager.AppSettings  (



"user"), ConfigurationManager.AppSettings("Password")) 

CrystlRprtVwr.ReportSource = myReportObject