Question

I have string inputs, and depending on the value of that input, I’d like to call a specific object’s constructor (new Object1(int), new Object2(string), new Object3(int, int), etc. all implementing an IObject interface).

Rather than doing this the obvious (and slow) way of chaining if/else statements, I’d like to do something like having a Dictionary that goes from a string to a constructor (e.g. {“object1” -> new Object1(int)} )

Is there some way I can do something like this in C#, perhaps through combining “typeof” with a constructor? I’d like to avoid a Factory, as that’d require parallel code structures, which I’d like to avoid.

Thank you in advance

Answer 1

You could do something like this:

var d = new Dictionary<string, Func<IObject>>();
d.Add("Object1", () => new Object1());
d.Add("Object2", () => new Object2());
d.Add("Object3", () => new Object3());
string typename = GetAStringFromSomewhere();
IObject foo = d[typename]();