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(Microsoft.Reporting.WebForms.ReportViewer) is not compatible with the type of control (Microsoft.Reporting.WebForms.ReportViewer)

Question
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User-1979913015 posted
I am trying to use ReportViewer 9 in Visual Studio 8 but I get this error when I try to run the page:
The base class includes the field 'ReportViewer1', but its type (Microsoft.Reporting.WebForms.ReportViewer) is not compatible with the type of control (Microsoft.Reporting.WebForms.ReportViewer).
Please help if you can!
Thanks
Wednesday, July 2, 2008 3:39 PM
Answers
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User-1979913015 posted
Please test it with a new clean project if the viewer works with VS2008. Another stupid question, are you using viewer for WebForms or WinForms – I am sure there are two separate viewers (it is really stupid question but still please check it).<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p><o:p></o:p>If the test above is successful, and if you had previous version in past, your bin folder can have DLLs from both versions.<o:p></o:p>I would suggest trying the following:<o:p></o:p>· Close the VS solution <o:p></o:p>· Delete file with extension .suo (it is hidden file so make sure you found one)<o:p></o:p>· Go to bin folder and delete everything<o:p></o:p>· Open solution and rebuild it: clean the solution first (Build\Clean Solution), then rebuild solution (Build/Rebuild Solution).
This solution helped me. I hope it is helpful for someone else.
Tt
Tt<o:p> </o:p><o:p> </o:p>- Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
Thursday, July 3, 2008 12:39 PM
All replies
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User-1979913015 posted
Please test it with a new clean project if the viewer works with VS2008. Another stupid question, are you using viewer for WebForms or WinForms – I am sure there are two separate viewers (it is really stupid question but still please check it).<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p><o:p></o:p>If the test above is successful, and if you had previous version in past, your bin folder can have DLLs from both versions.<o:p></o:p>I would suggest trying the following:<o:p></o:p>· Close the VS solution <o:p></o:p>· Delete file with extension .suo (it is hidden file so make sure you found one)<o:p></o:p>· Go to bin folder and delete everything<o:p></o:p>· Open solution and rebuild it: clean the solution first (Build\Clean Solution), then rebuild solution (Build/Rebuild Solution).
This solution helped me. I hope it is helpful for someone else.
Tt
Tt<o:p> </o:p><o:p> </o:p>- Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
Thursday, July 3, 2008 12:39 PM -
User-209725320 posted
Change in your Web.config all "Microsoft.ReportViewer.WebForms, Version=8.0.0.0,..." to " Microsoft.ReportViewer.WebForms, Version=9.0.0.0,..." and in controls "Register Assembly="Microsoft.ReportViewer.WebForms, Version=8.0.0.0,..." to "Register Assembly="Microsoft.ReportViewer.WebForms, Version=9.0.0.0,..."
It should help
mw
Saturday, August 30, 2008 10:48 AM -
User1864629908 posted
I tried all of the above as well as removing the bin files and .suo file. None of these worked. What did work for me was going to the Solution Explorer -> [Project Name] -> References -> delete the Report viewer reference and readd the correct one.
Friday, July 24, 2009 3:00 PM -
User154448021 posted
I tried all of the above as well as removing the bin files and .suo file. None of these worked. What did work for me was going to the Solution Explorer -> [Project Name] -> References -> delete the Report viewer reference and readd the correct one.
Thanks. That solved my issue.
Thursday, September 10, 2009 2:46 PM -
User232787578 posted
Solved mine too. Should have thought of that! Thanks
Friday, September 25, 2009 9:09 AM -
User-593575503 posted
Cleaning the solutions works fine for me !
Thanks,
Friday, August 20, 2010 5:41 PM -
User831742134 posted
Remove the references of Microsoft.Reporting.WebForms,Microsoft.Reporting.Common
and add them once again of the Version which you have used in web.config.
Monday, January 9, 2012 8:07 AM -
User-922479165 posted
Cleaning the solutions works fine for me as well
Tuesday, February 14, 2012 11:44 AM