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Create free Team Collectives™ on Stack Overflow. Find centralized, trusted content and collaborate around the technologies you use most. 7, 4 4 gold badges 33 33 silver badges 42 42 bronze badges. 4. The AT command is perfect! Your Google-fu is superior to my Google-fu. Windows 10 and higher, a language independent approach is. Sep 05,  · Installation is fairly simple and straightforward, but does require a few things: Microsoft Windows Vista/7/8//10 x86 or amd64, Framework , Microsoft Visual C++ Redistributable Package, Microsoft Visual C++ Runtime, DirectX Runtime, Xbox Controller driver (already integrated in Windows 8.x or greater), at. デジタルサイネージサービスのご紹介。お客様のご要望に応じて選べる2つのラインナップ。サイネージに関するほぼ全てをお任せ頂ける「らくちんサイネージ」低コストで始められる「じぶんでサイネージ」をご用意。デジタルサイネージならエレコム。.
 
 

 

c# – How do you do a deep copy of an object in .NET? – Stack Overflow.c# – Disable Macros Automatically Microsoft Word Interop – Stack Overflow

 

Find centralized, trusted content and collaborate around the technologies you use most. Connect and share knowledge within a single location that is structured and easy to search. BinaryFormatter has been deprecated, and will no longer be available in. NET after November See BinaryFormatter Obsoletion Strategy.

I wrote a deep object copy extension method , based on recursive “MemberwiseClone”. It is fast three times faster than BinaryFormatter , and it works with any object. You don’t need a default constructor or serializable attributes. You can use Nested MemberwiseClone to do a deep copy. Its almost the same speed as copying a value struct, and its an order of magnitude faster than a reflection or b serialization as described in other answers on this page.

Note that if you use Nested MemberwiseClone for a deep copy , you have to manually implement a ShallowCopy for each nested level in the class, and a DeepCopy which calls all said ShallowCopy methods to create a complete clone. This is simple: only a few lines in total, see the demo code below.

Here is the output of the code showing the relative performance difference 4. Using nested MemberwiseCopy is almost as fast as copying a struct, and copying a struct is pretty darn close to the theoretical maximum speed. Again, note that if you use Nested MemberwiseClone for a deep copy , you have to manually implement a ShallowCopy for each nested level in the class, and a DeepCopy which calls all said ShallowCopy methods to create a complete clone.

This is simple: only a few lines in total, see the demo code above. Note that when it comes to cloning an object, there is is a big difference between a “struct” and a “class”:. It’s probably possible to use reflection to recursively walk through the object graph to do a deep copy.

WCF uses this technique to serialize an object, including all of its children. The trick is to annotate all of the child objects with an attribute that makes it discoverable. You might lose some performance benefits, however. Serialize-deserialize was slowest, taking Then came AutoMapper, taking Much faster was the reflection-based method which took 2. By far the fastest was Nested MemberwiseClone, taking 0. Comes down to performance versus hassle of adding code to each class to clone it.

If performance isn’t an issue go with Alex Burtsev’s method. I believe that the BinaryFormatter approach is relatively slow which came as a surprise to me! You might be able to use ProtoBuf. NET for some objects if they meet the requirements of ProtoBuf. The code assumes that types will be mutable around the elected members.

Accordingly, custom structs are not supported, since they should be immutable. Here is working code for a modification of this tested on. NET 4. It uses System. Serialization and System. No need to mark classes as serializable. Thanks to DetoX83 article on code project. There are good recommendations in the documentation for MemberWiseClone for strategies to deep copy: -. The MSDN documentation seems to hint that Clone should perform a deep copy, but it is never explicitly stated:.

The ICloneable interface contains one member, Clone, which is intended to support cloning beyond that supplied by MemberWiseClone… The MemberwiseClone method creates a shallow copy…. Stack Overflow for Teams — Start collaborating and sharing organizational knowledge.

Create a free Team Why Teams? Learn more about Teams. How do you do a deep copy of an object in. Asked 13 years, 10 months ago. Modified 1 year, 5 months ago. Viewed k times. Uwe Keim What does a Deep Copy do? Does it copy the bitstream? A shallow copy will only create a new object and point all the fields to the original. NET objects: github. A deep copy creates a second instance of the object with the same values. A shallow copy oversimplified is like creating a second reference to an object.

Use a Mapper, I suggest UltraMapper github. Show 4 more comments. Sorted by: Reset to default. Highest score default Trending recent votes count more Date modified newest first Date created oldest first. Important Note BinaryFormatter has been deprecated, and will no longer be available in. Serialize ms, obj ; ms.

Your source file must include the following code: using System. Binary; using System. Robert Harvey k 46 46 gold badges silver badges bronze badges. Kilhoffer Kilhoffer What happen if the object have event, Do they lost everything because of the serialization?

You can use [field: NonSerialized] on event to avoid this. Sean above the class declaration, add [Serializable]. Recursive MemberwiseClone will do deep copy too, it works 3 times faster then BinaryFormatter, doesn’t require default constructor or any attributes. See my answer: stackoverflow. I know this post is old but it still comes up as a top hit when searching for deep cloning. Take note that according to Microsoft aka.

Show 13 more comments. Source code: using System. Generic; using System. Reflection; using System. NonPublic BindingFlags. ContainsKey originalObject return visited[originalObject]; if typeof Delegate. Invoke originalObject, null ; if typeToReflect. SetValue InternalCopy clonedArray. BaseType, BindingFlags. Instance BindingFlags. Public BindingFlags.

Position ; while walker. Alex Burtsev Alex Burtsev Thanks Alex, yes I needed to call copy instead and that worked! Regarding IsPrimitive : what is the reason you return true for a string. IsPrimitive ;? MattSmith It was working for delegates, but I intently disabled it by setting null , see github.

Alex – just encountered the same puzzlement. All the relevant code is in the referenced file, there’s an ArrayExtensions namespace lower down. Memberwiseclone is so fast because it does not invoke constructors. So if your constructors are doing heavy lifting such as event subscription, you are out of luck. It relies on copying private fields of the object, bypassing the business logic in the properties and methods.

For example, I saw hashCode field being copied in a HashSet collection, even though all instances have changed. Show 35 more comments. Building on Kilhoffer’s solution With C 3. Serialize stream, a ; stream.