Line number in Try Catch block?

[Skechers]

Hello There,

Is there a way to get the source line number when catching exceptions?

I suppose I could put a descrption when printing out the exception number ... but that would take som effort :-)

Many Thanks, Caesar.

[NinjaTrader_Emily]

Hello Caesar,

Thank you for your inquiry.

I'm not aware of a way to print the line number of the source of the exception. You may have to add some print statements intermittently throughout your code to see what was the last print before the exception was thrown in order to narrow down the source of the error, or you could comment out different portions of code at a time to see if this helps you to narrow it down. For more tips on debugging your scripts, see the page here:

https://forum.ninjatrader.com/forum/ninjascript-educational-resources/tips/3527-debugging-your-ninjascript-code?p=671956#post671956

Please let us know if we may be of further assistance.

[Skechers]

Many Thanks Emily!

[sidlercom80]

Hello There,

Is there a way to get the source line number when catching exceptions?

I suppose I could put a descrption when printing out the exception number ... but that would take som effort :-)

Many Thanks, Caesar.

Of course, try something like that. But you only get the line number if you switch on debug mode ;-)

private void TestMethod()
{
     try
    {
        //do some stuff
     }
      catch (Exception ex)
     {
         string errorMsg = ExceptionInfo(ex, MethodBase.GetCurrentMethod().DeclaringType.Name);
         Print(errorMsg);
      }
}

private string ExceptionInfo(Exception exception, string name, [CallerMemberName] string callingMethod = "")
{
   var stackFrame = new StackTrace(exception, true).GetFrame(0);
   return string.Format("{0} [{1}]-[{2}]-[{3}]-[Line={4}]-[Column={5}]-[FileName={6}]-{0} [Error={7}] {0}"
            , Environment.NewLine, name, callingMethod, stackFrame.GetMethod(), stackFrame.GetFileLineNumber(), stackFrame.GetFileColumnNumber(), stackFrame.GetFileName(),       exception.ToString());
}

private void Print(string msg, [CallerMemberName] string callingMethod = "", [CallerLineNumber] int callingLineNumber = 0)
{
     Output.Process(msg + "  " + callingMethod + "  " + callingLineNumber, PrintTo.OutputTab1);
}

[QuantKey_Bruce]

Skechers If you compile by right-clicking on the script editor and turn on Debug mode, then the stack trace for your unhandled exception will automatically be put into your trace file in Documents -> NinjaTrader 8 -> trace.

Without debug mode it's still in there, but without the line numbers or amount of detail about the call stack.

[Skechers]

Many Thanks Bruce & Slider!