Is there a way to detect whether the attached debugger is remote-debugger?

Question

Using System.Diagnostics.Debugger.Debugger.IsAttached I can tell that a debugger is attached. Is there a way to detect whether the attached debugger is remote-debugger (Visual Studio Remote Debugger Monitor)?

Answer 1

You can use the native CheckRemoteDebuggerPresent from kernel32.dll

From MSDN:

The "remote" in CheckRemoteDebuggerPresent does not imply that the debugger necessarily resides on a different computer; instead, it indicates that the debugger resides in a separate and parallel process.

You can use it as follows:

[DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool CheckRemoteDebuggerPresent(IntPtr hProcess, ref bool isDebuggerPresent);

public static void Main()
{
    bool isDebuggerPresent = false;
    CheckRemoteDebuggerPresent(Process.GetCurrentProcess().Handle, ref isDebuggerPresent);

    Console.WriteLine(string.Format("Debugger Attached: {0}", isDebuggerPresent));
    Console.ReadLine();
}