Determining if a parameter uses “params” using reflection in C#?

Question

Consider this method signature:

public static void WriteLine(string input, params object[] myObjects)
{
    // Do stuff.
}

How can I determ

Answer 1

Check the ParameterInfo, if ParamArrayAttribute has been applied to it:

static bool IsParams(ParameterInfo param)
{
    return param.GetCustomAttributes(typeof (ParamArrayAttribute), false).Length > 0;
}