Csharp/CSharp Tutorial/Class/IDisposable

Complex IDisposable pattern

using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text;
using System.Security.Cryptography;
class MyClass : IDisposable
{
    private IntPtr myHandle = IntPtr.Zero;
    ~MyClass()
    {
        Dispose(false);
    }
    public void Dispose()
    {
        Dispose(true);
        GC.SuppressFinalize(this);
    }
    protected void Dispose(bool disposing)
    {
        IntPtr h = myHandle;
        if (h != IntPtr.Zero)
        {
            h = IntPtr.Zero;
        }
    }
}
public class MainClass
{
    public static void Main()
    {
        using (MyClass mc = new MyClass())
        {
        }
    }
}

implementation of IDisposable

using System;
class MyClass: IDisposable
{
     private bool Disposed = false;
     public void Dispose()
     {
           Dispose(true);
           GC.SuppressFinalize(this);
          
     }
     private void Dispose(bool disposing)
     {
           if(!this.Disposed)
           {
                  if(disposing)
                  {
                       //free any managed resources
                  }
                  //free unmanaged resources
           }
           
           Disposed = true;
     }
     ~MyClass()
     {
           Dispose(false);
     }
}

Simple IDisposable pattern

using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text;
using System.Security.Cryptography;
class MyClass : IDisposable
{
    private Stream myStream = null;
    public void Dispose()
    {
        Stream s = myStream;
        if (s != null)
            ((IDisposable)s).Dispose();
    }
}
public class MainClass
{
    public static void Main()
    {
        using (MyClass mc = new MyClass())
        {
        }
    }
}