visual-studio


visual studio “unspecified error” how ever no exception is thrown


I am making a program which takes data from a data base then preform a calcultion when pressing a button.
When you press the button for the first time no problems however if I press it two or more times a box pops up which inform you about an "unspecified error".
I have tried catching the exception however no exception is thrown.
I have tried debugging every line however I didn't find anything.
The error shows up multiple times at spesific lines and it seems that the compiler just ignores them.
screenshot

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