What is the difference of getting Type by using GetType() and typeof()? [duplicate]

Answer 1

GetType() works at runtime, typeof() is a compile-time operator.

So,

// untested, schematic
void ShowType(Object x)
{
   Write(x.GetType().Name);  // depends on actual type
   // typeof(x) won't actually compile
   Write(typeof(x).Name);   // always System.Object
}

ShowType("test");

Will print System.String and System.Object.

See this question for a better example.