Posts by Guilherme Costa • 1 point
2 posts
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answer164
viewsA: Error 'System.Collections.Generic.Keynotfoundexception' occurred in mscorlib.dll
Problem solved, I was using shaman I do not know what could have gone wrong with it since I never had problems. I switched to wamp and started working again
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-1
votes1
answer164
viewsQ: Error 'System.Collections.Generic.Keynotfoundexception' occurred in mscorlib.dll
I created an application in visual studio 2017, I formatted the pc and installed the 2019 version and since then no application I try to connect to the database works. always appears this error: An…