/// <summary>
	/// 实现对象的深拷贝
	/// </summary>
	/// <typeparam name="T">对象类型</typeparam>
	/// <param name="obj">对象</param>
	/// <returns>T</returns>
	public static T CreateDeepCopy<T>(T obj)
	{
		T t;
		MemoryStream memoryStream = new MemoryStream();
		BinaryFormatter formatter = new BinaryFormatter();
		formatter.Serialize(memoryStream, obj);
		memoryStream.Position = 0;
		t = (T)formatter.Deserialize(memoryStream);
		return t;
	}

调用方法：

CategoryInfo category = CreateDeepCopy<CategoryInfo>((CategoryInfo)bsCategory.Current);