Hi there: I am trying to open a report in the BIDS designer. However, it failed to open it and the error xml message is as follows ... Deserialization failed: The 'DataType' attribute is not declared. Line 3102, position 20..... Any ideas how to fix it and visualize the report in BIDS? thanks hui--Currently using Reporting Service 2000; Visual Studio .NET 2003; Visual Source Safe SSIS 2008 SSAS 2008, SVN --

Please check this out - http://blog.hoegaerden.be/2009/03/28/the-datatype-attribute-is-not-declared/

Thanks . I also googled it out. So what's the final solution ? install the Visual studio 2008 sp 2 or Sql server 2008 SP2? Hui--Currently using Reporting Service 2000; Visual Studio .NET 2003; Visual Source Safe SSIS 2008 SSAS 2008, SVN --

Read you read the blog post sent you? http://connect.microsoft.com/VisualStudio/feedback/details/405739/vs-2008-rs-2008-error-deserialization-failed-the-datatype-attribute-is-not-declared

Did you read the blog post I sent you? http://connect.microsoft.com/VisualStudio/feedback/details/405739/vs-2008-rs-2008-error-deserialization-failed-the-datatype-attribute-is-not-declared

I did shahfraisal and the last comment from microsoft is below Posted by Microsoft on 1/27/2009 at 7:07 PM Thank you for your feedback, we are currently reviewing the issue you have submitted. If this issue is urgent, please contact support directly(http://support.microsoft.com/) so do I miss something here? Also I would appreciate any straight answer , that would make life a lot easier. Have a good long weekend! --Currently using Reporting Service 2000; Visual Studio .NET 2003; Visual Source Safe SSIS 2008 SSAS 2008, SVN --

Hi cat_ca, It seems that the error message you have provided is a known issue in SQL Server 2008. The issue has been fixed in the latest SQL Server 2008 R2 build. To solve the issue, please try to remove the code parts: DataType=”Integer” in your xml file, and you can follow http://blog.hoegaerden.be/2009/03/28/the-datatype-attribute-is-not-declared/ for clear explaination. Please let me know if you have any question. Thanks, Eileen

Hi There, Is there a fix for SQL 2008 (not R2). I have the same issue but am not using R2. Thanks, Barbara