How can I get the name of the calling function in C#?

Question

I need to get the name of the calling function in C#. I read about stackframe method but everywhere its said its not reliable and hurts the performance.

But I need i

Answer 1

upgrade to c# 5 and use CallerMemberName

public void Method([CallerMemberName] string caller="")
{
}

EDIT

Other nice things with c# 5

public void Method([CallerMemberName] string name="",
                   [CallerLineNumber] int line=-1,
                   [CallerFilePath] string path="")
{
}

Answer 2

You can do something like:

 var stackTrace = new StackTrace();
 var name = stackTrace.GetFrame(1).GetMethod().Name;

and it work with any version of the framework/language.

Answer 3

You can use the C# 4.5 Attributes mentioned in L.B's answer with .NET 3.5 or above by simply declaring them (you need to compile using vs2012 or higher, else you won't get any error, but the parameter value will stay null!):

namespace System.Runtime.CompilerServices
{
  [AttributeUsageAttribute(AttributeTargets.Parameter, Inherited = false)]
  public sealed class CallerMemberNameAttribute : Attribute
  {
  }

  [AttributeUsageAttribute(AttributeTargets.Parameter, Inherited = false)]
  public sealed class CallerFilePathAttribute : Attribute
  {
  }

  [AttributeUsageAttribute(AttributeTargets.Parameter, Inherited = false)]
  public sealed class CallerLineNumberAttribute : Attribute
  {
  }
}