Determining which code line threw the exception

Question

In dotNet a line throws an exception and is caught, how can I figure out which line in which file threw the exception? Seems relatively straightforward, but I can\'t figure

Answer 1

Well, in .NET you have whats called a FirstChanceException. These essentially are thrown before an exception is handled. There are two ways of looking at the issue that you're presenting here. One is from a debugging angle. If debugging you can just set your debugger to catch thrown exceptions from the Debug/Exceptions window. This is easier in an interactive context. IF you need to record this information from within a non-interactive context then I would do something similar to what CMS is talking about...

try
{
    ...
}
catch(Exception ex)
{
    System.Diagnostics.StackTrace stackTrace = new System.Diagnostics.StackTrace(ex);
    System.Diagnostics.StackFrame firstFrame = stackTrace.GetFrame[0];
    Console.WriteLine(firstFrame.GetFileLineNumber);
    ...
}

The only difference here is that we get the entire Stack Trace, then go to the first frame, which is where the exception was originally thrown.