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1) Can you describe the Dispose Pattern ?
This pattern provides a standard convention for working around the shortcomings of the Finalize method.
This pattern uses the System.IDisposable interface.

public class MyObject : System.IDisposable 
{ 
   bool _disposed; 

   public void Dispose() 
   { 
      Dispose(true); 
      GC.SuppressFinalize(this); 
   } 

   protected virtual void Dispose(bool disposeOfManaged) 
   { 
      if (this._disposed == false) 
      { 
         if (disposeOfManaged == true) 
         { 
            //code to clean up managed resources 
            component.Dispose(); 
         } 

         //code to clean up unmanaged resources 

         this._disposed = true; 
      } 
   } 

   protected override void Finalize() 
   { 
      Dispose(false); 
   } 
}