What is the difference between typeof(foo) and myFoo.GetType()?

Typeof is operator which applied to a object returns System.Type object. Typeof cannot be overloaded white GetType has lot of overloads.GetType is a method which also returns System.Type of an object. GetType is used to get the runtime type of the object. Example from MSDN showing Gettype used to retrive type at untime:-
public class MyBaseClass: Object {
}
public class MyDerivedClass: MyBaseClass {
}
public class Test {
public static void Main() {
MyBaseClass myBase = new MyBaseClass();
MyDerivedClass myDerived = new MyDerivedClass();
object o = myDerived;
MyBaseClass b = myDerived;
Console.WriteLine(“mybase: Type is {0}”, myBase.GetType());
Console.WriteLine(“myDerived: Type is {0}”, myDerived.GetType());
Console.WriteLine(“object o = myDerived: Type is {0}”, o.GetType());
Console.WriteLine(“MyBaseClass b = myDerived: Type is {0}”,
b.GetType());
}
}