C# 深拷贝 Bitmap对象示例

原理，采用二进制序列化将对象序列化为MemoryStream,再从MemoryStream反序列化为对象。

如下，

    public Bitmap DeepClone(Bitmap bitmap)
        {
            Bitmap dstBitmap = null;
            using (MemoryStream mStream = new MemoryStream())
            {
                BinaryFormatter bf = new BinaryFormatter();
                bf.Serialize(mStream, bitmap);
                mStream.Seek(0, SeekOrigin.Begin);//指定当前流的位置为流的开头。
                dstBitmap = (Bitmap)bf.Deserialize(mStream);
                mStream.Close();
            }
            return dstBitmap;
        }

可以以扩展方法的方式来写深拷贝的函数，个人比较喜欢的方式。如下

 public static Bitmap DeepClone(this Bitmap bitmap)
        {
            Bitmap dstBitmap = null;
            using (MemoryStream mStream = new MemoryStream())
            {
                BinaryFormatter bf = new BinaryFormatter();
                bf.Serialize(mStream, bitmap);
                mStream.Seek(0, SeekOrigin.Begin);
                dstBitmap = (Bitmap)bf.Deserialize(mStream);
                mStream.Close();
            }
            return dstBitmap;
        }

使用时直接：bit.DeepClone();即可。

其他对象与此类似，如DataTable

   public static class GlobalFunctionEx
    {       
        public static Bitmap DeepClone(this Bitmap bitmap)
        {
            Bitmap dstBitmap = null;
            using (MemoryStream mStream = new MemoryStream())
            {
                BinaryFormatter bf = new BinaryFormatter();
                bf.Serialize(mStream, bitmap);
                mStream.Seek(0, SeekOrigin.Begin);
                dstBitmap = (Bitmap)bf.Deserialize(mStream);
                mStream.Close();
            }
            return dstBitmap;
        }
        public static DataTable DeelClone(this DataTable DataTable)
        {
            DataTable dtNew = null;
            using (MemoryStream mStream = new MemoryStream())
            {
                BinaryFormatter bf = new BinaryFormatter();
                bf.Serialize(mStream, DataTable);
                mStream.Seek(0, SeekOrigin.Begin);
                dtNew = (DataTable)bf.Deserialize(mStream);
                mStream.Close();
            }
            return dtNew;
        }
    }