Tricky Problem

[viper161616]

Hey, I have looked but couldn't find an answer to my question within the forum. Furthermore, I believe this is the correct place to ask as I am looking for a c# specific answer. If one exist please redirect me, otherwise:
I was wondering if it is at all possible to pass a segment a of code/argument to an if statement so that it can therein be evaluated. Obviously, this example won't work and I know I could just evaluate the string and make a decision from there, but I was wondering if there was any shortcut or method of passing the entire argument to be evaluated to a function that anyone knew of.
Here is essentially what I want to do:

public void OnButton1Clicked (object sender, System.EventArgs e)
	{
		tryStuff("x < y".);
                tryStuff("x> y".);
                tryStuff("x>y && x > z")
	}
	public void tryStuff(string s)
	{
		int x = 5;
		int y = 10;
                int z = 3;
		if (s)
		{
			//do whatever
		}
	}

Thanks in advance to anyone who helps!