Is it possible to store functions in a dictionary?

Question

I have a message coming into my C# app which is an object serialized as JSON, when i de-serialize it I have a \"Name\" string and a \"Payload\" string[]

Answer 1

Something similar to this:

public class Methods
{
    public readonly Dictionary> MethodsDict = new Dictionary>();

    public Methods()
    {
        MethodsDict.Add("Method1", Method1);
        MethodsDict.Add("Method2", Method2);
    }

    public string Execute(string methodName, string[] strs)
    {
        Func method;

        if (!MethodsDict.TryGetValue(methodName, out method))
        {
            // Not found;
            throw new Exception();
        }

        object result = method(strs);

        // Here you should serialize result with your JSON serializer
        string json = result.ToString();

        return json;
    }

    public object Method1(string[] strs)
    {
        return strs.Length;
    }

    public object Method2(string[] strs)
    {
        return string.Concat(strs);
    }
}

Note that you could make it all static, if the methods don't need to access data from somewhere else.

The return type I chose for the delegates is object. In this way the Execute method can serialize it to Json freely.