how to create compiler ?

hello all

any one have an idea about how to create a compiler by using c# ! , how is it , we have one rich textbox to writing program throwing it  , and one button with some lables the lables are contain (name of the class , name of the constant, name of the keyword) , let's take an example ...


class a
{
int x=5;
System.out.println(x);
}

//output
Name of CLass : a
constance : 5
keyword : x




so any body have an idea about that how is created !!!