VS2017 - VB - Sudden innundation of errors: BC30002 Type 'TTTT' is not defined.

  • Thread starter Thread starter Dan of Clontarf
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Dan of Clontarf

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Hi,
I'm Using Visual Studio 2017 and working on a VB Windows Forms project that connects to an SQL Server database. There are 7 forms in the project. 5 of the forms have their own exclusive dataset.
Everything was working fine.I added 1 line of code to 1 of the forms. I went to run the project and suddenly I'm innundated with BC30002 errors about every dataset being undefined.
I can't view the form designers for forms that use data sets. When I try, I get the message:
To prevent possible data loss before loading the designer, the following errors must be resolved:
I've tried reversing the last change, cleaning the project, closing VS and reopening.
Has anyone else had this problem? Is there known fix for this?
Thanks

Dan

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