c# - How to get the name of the method that caused the exception

Question

My code looks as below.

try
{
    _productRepo.GetAllProductCategories();
}
catch (Exception ex)
{
    //Do Something
}

I need a way to show the method name, suppose in the above case if any exception is thrown in the GetAllProductCategories() method, I need to get this method name i.e. "GetAllProductCategories()" as my result. Can any one suggest me how to do this?

Answer 1

There's a TargetSite property on System.Exception that should come in handy.

Gets the method that throws the current exception.

In your case, you probably want something like:

catch (Exception ex)
{
   MethodBase site = ex.TargetSite;
   string methodName = site == null ? null : site.Name;
   ...           
}

It's worth pointing out some of the issues listed:

If the method that throws this exception is not available and the stack trace is not a null reference (Nothing in Visual Basic), TargetSite obtains the method from the stack trace. If the stack trace is a null reference, TargetSite also returns a null reference.

Note: The TargetSite property may not accurately report the name of the method in which an exception was thrown if the exception handler handles an exception across application domain boundaries.

You could use the StackTrace property as @leppie suggests too, but do note that this is a string representation of the frames on the stack; so you'll have to manipulate if you only want the name of the method that threw the execption.