what is the mistake in my code? i used "Parallel For"

Question

List points = new List (); Parallel.For(0 15000000 i => { points.Add(i); }); this is my code. The mistake is An exception of type 'System.ArgumentException' occurred in mscorlib.dll but was not handled in user code Solutions?

Manas Mohapatra · Answer

Looks code is ok still you need to find the root cause. The exception that is thrown when one of the arguments provided to a method is not valid. Use try-catch block to exact error: List int > points = new List int >(); try { Parallel.For(0 15000000 i => { points.Add(i); }); } catch (ArgumentException ex) { Console.WriteLine(ex); } catch (Exception ex) { Console.WriteLine(ex); }