实现IDisposable的正确方法

简单的说就是具体实现protected virtual void Dispose(bool disposing)并在public void Dispose()中调用。

	class BaseClass : IDisposable
	{
	// Flag: Has Dispose already been called?
	bool disposed = false;
	// Public implementation of Dispose pattern callable by consumers.
	public void Dispose()
	{
	Dispose(true);
	GC.SuppressFinalize(this);
	}
	// Protected implementation of Dispose pattern.
	protected virtual void Dispose(bool disposing)
	{
	if (disposed)
	return;
	if (disposing) {
	// Free any other managed objects here.
	//
	}
	// Free any unmanaged objects here.
	//
	disposed = true;
	}
	}

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更详细的请参考下面两个链接：
Implementing a Dispose Method
Dispose Pattern