How to get Function formal parameters' list dynamically in C#?

I have a class file in which, I m trying to read another function's formal parameters by passing the name of the function.
But somehow, below code is not working:

public string Post([FromBody]string value)
{
    string result = String.Empty;
    JObject json = JObject.Parse(value);
    string funcname = json["functionname"].Value<string>();

        method.Method.GetParameters ( ) [ index ].Name ;

    //typeof(MyType).GetMethod(json).Invoke(null, new [] {arg1, arg2}) //need to parameter list here
    //GetSearch(string text)

    return result;
}

Is this possible with Reflection? Or with Realproxy?
Kindly guide for possible solutions.