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In this article, I will show you how to serialize object to XML in C#. XML serialization converts the public fields and properties of an object into an XML stream. Open Visual Studio. Go to File-New-Project, Choose Console Application. In the application first let us write a class with a few properties.

• Delphi Serialize Class To Xml Code
• Xml Serialize To String
• C# Serialize Xml To Json

So, I'd like to find an XML serializer for generic Delphi components, similar to the XmlSerializer used in the .NET FW.
The real problem with using binary streaming methods such as Stream's WriteComponent and ReadComponent nominally support similar functionality, it isn't:

• User editable
  
• Terribly safe when dealing with multiple versions of components
  
• Very effective at saving the state of nested components (Comp1.Comp2, etc.)
  

1. You can use the Save method on the Bitmap class to get the bytes into a memory stream, and from there, a byte array. Then you can serialize the byte array. A common way to do that is to use the System.Convert.ToBase64String. Then you can send the bitmap as a string parameter. On the other side.
2. #Delphi-Serialization Delphi-Serialization provides functionality for serializing and deserializing Objects to (currently only) XML. Roadmap (rough) more testing; more flexibility; serialize/deserialize to JSON; and more; Project-Dependencies. DunitX (Testframework) DSharp; Spring4D; Example.

While the XML data binding wizard provides similar functionality it has other drawbacks such as:

• Forces you to keep an external XML/XSD/etc. file in synch with the code
  
• Tool-generated, so you can't just edit the code, and have to rely on Adapter classes, or a lot of manual editing
  
• Also not great for versioning
  

Generic XML serialization of any object (or TPersistent/TComponent descendant, as is more likely) would be considerably more ideal. I've looked into ObjectBinaryToText as well, but it seems rather fragile and I haven't got it working quite right as of yet. The format is also non-standard; once this is being done, XML makes more sense. I've also poked around in the extensive sourcesoap subdirectory (D6 Enterprise, from work View image: /infopop/emoticons/icon_wink.gif), but haven't found the magic bullet I'm looking for.
If anyone knows of a hidden VCL feature I might be able to adapt, or some set of components which addresses this want of mine, that would be awesome. Thanks in advance View image: /infopop/emoticons/icon_smile.gif

In Java, one can save a serializable object to a file and load an object from that file. Can we do this in Delphi? If yes, How?

rajeemcariazorajeemcariazo

4 Answers

http://blog.dragonsoft.us/2008/04/21/how-to-serialize-delphi-object/
DeHL: http://alex.ciobanu.org/?p=285

AndréAndré

If you ask 'Can we do this in Delphi?' - the answer is: yes. I guess you want to know, HOW this can be done in Delphi? Well this depends on what do you want to serialize:

If you want to serialize

• your own data objects, then you couldwrite your own saveTo/loadFrom functions
• components, then you could use the built-in component streaming system
• any unknown object, then you need some RTTI techniques and the objects must publish their serializable properties

Delphi Serialize Class To Xml Code

splashsplash

The first article linked to by Andre seems (maybe I skimmed to fast) to use the 'old' pre-D2010 style RTTI (Run-Time Type Information), which is dependent on properties having published visibility in order to be able to enumerate them.

As of D2010 Delphi has a completely new extended RTTI (built on top of the old one) which does not require published visibility and does a lot more than enumerate properties. DeHL, as described in the second article linked to be Andre, does use the new RTTI, and if you are looking for a library, I would also recommend this library.

If you prefer to build your own, you could have a look at an article on XML-serialization using the new RTTI by Robert Love: http://robstechcorner.blogspot.com/2009/10/xml-serialization-basic-usage.html

Robert Love also has a nice overview of RTTI articles: http://robstechcorner.blogspot.com/2009/09/so-what-is-rtti-rtti-is-acronym-for-run.html

And for some more ideas on what can be done with the new style RTTI, have a look at

Practical usage for Delphi's new RTTI - Attributes,Values and Why should I care about RTTI in Delphi?

Marjan VenemaMarjan Venema

Xml Serialize To String

NativeXML NativeXML website has the ability to store/retrieve objects in an XML format, which gives you additional manipulation capability over the RTTI methodology. Fast and easy manipulation of XML documents and the added capability of saving/loading persistent objects.

C# Serialize Xml To Json

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