Do __LINE__ __FILE__ equivalents exist in C#?

Question

For logging purposes

__LINE__  __FILE__  

were my friends in C/C++. In Java to get that information I had to throw an exception and catch it. Why are these old standbys so neglected in the modern programming languages? There is something magical about their simplicity.

Answer 1

Caller Information has been added to .NET 4.5. This will be compiled, a big improvement over having to examine the stack trace manually.

public void Log(string message,         [CallerFilePath] string filePath = "",         [CallerLineNumber] int lineNumber = 0) {     // Do logging } 

Simply call it in this manner. The compiler will fill in the file name and line number for you:

logger.Log("Hello!"); 

Answer 2

It is uglier, but you can do something like this in C# using the StackTrace and StackFrame classes:

StackTrace st = new StackTrace(new StackFrame(true)); Console.WriteLine(" Stack trace for current level: {0}", st.ToString()); StackFrame sf = st.GetFrame(0); Console.WriteLine(" File: {0}", sf.GetFileName()); Console.WriteLine(" Method: {0}", sf.GetMethod().Name); Console.WriteLine(" Line Number: {0}", sf.GetFileLineNumber()); Console.WriteLine(" Column Number: {0}", sf.GetFileColumnNumber()); 

Of course, this comes with some overhead.