Chapter 13 Quick Reference

Chapter 13 Quick Reference

To	Do this
Write a destructor	Write a method whose name is the same as the name of the class and is prefixed with a tilde (~). The method must not have an access modifier (such as public) and cannot have any parameters or return a value. For example: class Example  {      ~Example()      {          ...      }  }
Call a destructor	You can't call a destructor. Only the garbage collector can call a destructor.
Force garbage collection	Call System.GC.Collect.
Release a resource at a known point in time	Write a disposal method (a method that disposes of a resource) and call it explicitly from the program. For example: class TextReader  {      ...       public virtual void Close()     {          ...       }  }  class Example  {      void Use()      {          TextReader reader = ...;         // use reader          reader.Close();      }  }
Release a resource at a known point in time in an exception-safe manner	Release the resource with a using statement. For example: class TextReader : IDisposable  {      ...       public virtual void Dispose()     {          // calls Close      }      public virtual void Close()     {          ...       }  }   class Example  {      void Use()      {          using (TextReader reader = ...)          {              // use reader          }      }  }