Is there compile-time access to line numbers in C#?

Question

I\'m writing a C# program using Visual Studio 2010 where I want to write out certain events to a log file and include the line number the code was on when that happened.

Answer 1

CAVEATS: This is NOT an answer to the OP. I know that. But people looking for something similar may find this page.

• This is not about .NET 4.
• This is still ultimately a run-time solution.

But VS 2015, C#, .NET Core or .NET 4.5 allow:

using System.Runtime.CompilerServices;
using System.Diagnostics;

public static String CurrentLocation(
  [CallerFilePath] string file = null,
  [CallerLineNumber] int lineNumber = 0,
  [CallerMemberName] string method = null)
{
  String location = file;
  if (lineNumber != 0)
  {
    location += "(" + lineNumber.ToString() + ")";
  }
  if (!String.IsNullOrWhiteSpace(method))
  {
    location += ": " + method;
  }
  if (!String.IsNullOrWhiteSpace(location))
  {
    location += ": ";
  }
  return location;
}

[UPDATED USAGE]

With usage something like:

Console.Error.WriteLine(CurrentLocation() + "some message");

or

Debug.WriteLine(CurrentLocation() + "some message");