Find cause of Access violation


I am trying to create a game in WinForms but after running a while it throws an Access-violation-Exception

I tried changing some settings as found in answers to similar questions but none worked.

If it helps: I use no P/Invoke other than this:

[DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
private static extern short GetKeyState(int keyCode);
public static bool IsKeyDown(Keys key)
        int state = 0;
        short retVal = GetKeyState((int)key);
        if ((retVal & 0x8000) == 0x8000)
            state |= 1;
        if ((retVal & 1) == 1)
            state |= 2;
        return 1 == (state & 1);
    catch (Exception e1)
        Console.WriteLine("Invader: IsKeyDown failed:\r\n" + e1.ToString());
        return false;

It simply exits with Exception thrown at 0x76C391EA (msvcrt.dll) in LaptopSimulator2015.exe: 0xC0000005: Access violation reading location 0x0D39864A. occurred after about a minute. Is this my fault? What can I do to find out where the Exception is thrown?

EDIT: It somehow fixed itself after moving the solution folder somewhere else. Seems to have been caused by Visual Studio.

asked on Stack Overflow Aug 25, 2019 by AStupidPerson24 • edited Sep 22, 2019 by AStupidPerson24

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