How to call an appropriate method by string value from collection?

Question

I have a collection of strings. For example,

string[] coll={\"1\", \"2\", \"3\" ...\"100\"...\"150\"...} 

and I have respective methods for th

Answer 1

Solution 1:

Use a delegate mapping. This is the faster solution.

private static Dictionary mapping =
    new Dictionary
    {
        { "1", MethodOne },
        // ...
        { "150", Method150 }
    };

public void Invoker(string selector)
{
    Action method;
    if (mapping.TryGetValue(selector, out method)
    {
        method.Invoke();
        return;
    }

    // TODO: method not found
}

Solution 2:

Use reflection. This is slower and is appropriate only if your methods have strict naming (eg. 1=MethodOne 150=Method150 will not work).

public void Invoker(string selector)
{
    MethodInfo method = this.GetType().GetMethod("Method" + selector);
    if (method != null)
    {
        method.Invoke(this, null);
        return;
    }

    // TODO: method not found
}