Exception: The expression value cannot be calculated because the code has been optimized or the local framework is located on the call stack.

Debugging todayProgramAn error was discovered by accident, but the program can continue to execute and search the Internet to find out the cause. The description is as follows: Try { Regcomm. executenonquery (); Response. Redirect ("regok. aspx "); } Catch { Response. Redirect ("regerr. aspx "); } The response. Redirect ("regerr. aspx") is also executed "); The database is indeed added to the record, and I caught an error later, as if it was + $ Exception {becauseCodeUnable to calculate the expression value because it has been optimized or the local framework is located on the call stack .} System. Exception {system. Threading. threadabortexception}       There are two solutions: The first method is to extract response. Redirect ("regerr. aspx "); The second method is to add false to response. Redirect ("regerr. aspx", false );