C# 深拷贝 Bitmap对象示例

最新推荐文章于 2023-03-25 22:47:08 发布

谭某人不吃鱼

最新推荐文章于 2023-03-25 22:47:08 发布

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文章标签： C# 深拷贝 Bitmap

本文链接：https://blog.youkuaiyun.com/weixin_39964135/article/details/86552014

版权

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;
        }
    }