Get method's parameters names and values from inside method

Question

Is there a way in .NET to know what parameters and their values were passed to a method. Reflection way? This will be used from inside the method. It has to be generic so it can be used from any method. This is for logging purposes.

Answer 1

Call MethodBase.GetCurrentMethod().GetParameters().
However, it is not possible to get the parameter values; due to JIT optimization, they might not even exist anymore.

Answer 2

MethodInfo.GetCurrentMethod() will give you information about the current method and then get information about the parameters using GetParameters().

Answer 3

What you're trying to do can be achieved easily using aspect oriented programming. There are good tutorials online, I'll point to two of them:

• http://ayende.com/Blog/archive/2008/07/31/Logging--the-AOP-way.aspx
• http://www.codeproject.com/KB/cs/UsingAOPInCSharp.aspx

Answer 4

public void FunctionWithParameters(string message, string operationName = null, string subscriptionId = null)
{
    var parameters = System.Reflection.MethodBase.GetCurrentMethod().GetParameters();
    this.PrintParams(parameters, message, operationName, subscriptionId);

}

public void PrintParams(ParameterInfo[] paramNames, params object[] args)
{
    for (int i = 0; i < args.Length; i++)
    {
        Console.WriteLine($"{paramNames[i].Name} : {args[i]}");
    }
}