c# - Evaluate expression as string, return object? -

basically have code when happens, need set object equal expression. of "what do" jazz stored string. parse it, , use reflection find object doing to. need find out how store value object. problem value "1", "1*(5/2)", or "some string value". cool if have expressions "this.someproperty" or "(x > 3 ? 4 : 5)".

also, object storing to, string, int, double, or float @ minimum.

the vs2008 samples included nifty expressionparser used generic expression parser (vs2008 samples). few small updates, , custom factory class, can turn bit more expressive:

string expression = "(1 + 2)"; var func = functionfactory.create<int>(expression); 

or:

expression = "(a * b)"; var func2 = functionfactory.create<int, int, int>(expression, new[] { "a", "b" }); 

the return types of these create methods func<> instances, means nice type delegates:

int result = func2(45, 100); // result = 450; 

i've push code gist

update: i've blogged this too.

update 2, example:

var person = new person { age = 5 }; string expression = "(age == 5)"; var func3 = functionfactory.create<person, bool>(expression);  bool isfive = func3(person); // should true.