1551649 - Process Indicator freezes and report stops responding in a Web application using Crystal Reports for Visual Studio 2010

SAP Knowledge Base Article - Public

1551649 - Process Indicator freezes and report stops responding in a Web application using Crystal Reports for Visual Studio 2010

Symptom

  • Attempting to move to page two in the Crystal Reports DHTML viewer
  • On Click of the forward page button, the Process Indicator comes up and stops responding
  • This prevents any further actions in the viewer
  • The same behavior is noted for reports that display a Parameter Prompt dialog

Environment

  • Visual Studio 2010
  • Crystal Reports for Visual Studio 2010

Reproducing the Issue

  • Use the following code to display the report
Dim crReportDocument As New CrystalDecisions.CrystalReports.Engine.ReportDocument() 
crReportDocument.Load("C:\Crystal\formulas.rpt")
CrystalReportViewer1.ReportSource = crReportDocument
Response.Write("Ok")
  • The issue is not present if Response.Write("Ok") is not used

 

Cause

  • The issue has been identified and logged under Problem Report ID ADAPT01535016.
  • The Crystal Report Web form viewer is written asynchronously and the Response.Write() corrupts the output.

Resolution

  • Don't use Response.Write() on the same page as the CrystalReportViewer control.
  • Use Label controls and update the text if you need to write out a message.
  • No patch is planned for this issue.

Keywords

CR2010 2010 CR4VS2010 CR4VS VS2010 NET2010 crystal reports for visual studio 2010 progress , KBA , BI-DEV-NET , BI Software Development Kits (SDKs) - .NET or Other , Problem

Product

SAP Crystal Reports, developer version for Microsoft Visual Studio