How can I find the method that called the current method?

Question

When logging in C#, how can I learn the name of the method that called the current method? I know all about System.Reflection.MethodBase.GetCurrentMethod(), but

Answer 1

We can also use lambda's in order to find the caller.

Suppose you have a method defined by you:

public void MethodA()
    {
        /*
         * Method code here
         */
    }

and you want to find it's caller.

1. Change the method signature so we have a parameter of type Action (Func will also work):

public void MethodA(Action helperAction)
        {
            /*
             * Method code here
             */
        }

2. Lambda names are not generated randomly. The rule seems to be: > __X where CallerMethodName is replaced by the previous function and X is an index.

private MethodInfo GetCallingMethodInfo(string funcName)
    {
        return GetType().GetMethod(
              funcName.Substring(1,
                                funcName.IndexOf(">", 1, StringComparison.Ordinal) - 1)
              );
    }

3. When we call MethodA the Action/Func parameter has to be generated by the caller method. Example:

MethodA(() => {});

4. Inside MethodA we can now call the helper function defined above and find the MethodInfo of the caller method.

Example:

MethodInfo callingMethodInfo = GetCallingMethodInfo(serverCall.Method.Name);