Xml Serialize List
Serialize(XmlWriter, Object) Serialize(XmlWriter, Object) Serialize(XmlWriter, Object) Serializes the specified Object and writes the XML document to a file using the specified XmlWriter. Xml Serialization and Deserialization in C#.net - Duration: 19:02. Ajay Reddy 2,015 views.
- Xml Serialize List C#
- Xml Serialize List String
- C# Xml Serialize List Of Base Class
- Xml Serialize List Of Objects C#
- C# Serialize A List
- Xmlserializer Attributes
Definition
Overloads
| Serialize(XmlWriter, Object)Serialize(XmlWriter, Object)Serialize(XmlWriter, Object) | Serializes the specified Object and writes the XML document to a file using the specified XmlWriter. |
| Serialize(XmlWriter, Object, XmlSerializerNamespaces, String, String)Serialize(XmlWriter, Object, XmlSerializerNamespaces, String, String)Serialize(XmlWriter, Object, XmlSerializerNamespaces, String, String) | Serializes the specified Object and writes the XML document to a file using the specified XmlWriter, XML namespaces, and encoding. |
| Serialize(XmlWriter, Object, XmlSerializerNamespaces, String)Serialize(XmlWriter, Object, XmlSerializerNamespaces, String)Serialize(XmlWriter, Object, XmlSerializerNamespaces, String) | Serializes the specified object and writes the XML document to a file using the specified XmlWriter and references the specified namespaces and encoding style. |
| Serialize(XmlWriter, Object, XmlSerializerNamespaces)Serialize(XmlWriter, Object, XmlSerializerNamespaces)Serialize(XmlWriter, Object, XmlSerializerNamespaces) | Serializes the specified Object and writes the XML document to a file using the specified XmlWriter and references the specified namespaces. |
| Serialize(TextWriter, Object, XmlSerializerNamespaces)Serialize(TextWriter, Object, XmlSerializerNamespaces)Serialize(TextWriter, Object, XmlSerializerNamespaces) | Serializes the specified Object and writes the XML document to a file using the specified TextWriter and references the specified namespaces. |
| Serialize(Object, XmlSerializationWriter)Serialize(Object, XmlSerializationWriter)Serialize(Object, XmlSerializationWriter)Serialize(Object, XmlSerializationWriter) | Serializes the specified Object and writes the XML document to a file using the specified XmlSerializationWriter. |
| Serialize(TextWriter, Object)Serialize(TextWriter, Object)Serialize(TextWriter, Object) | Serializes the specified Object and writes the XML document to a file using the specified TextWriter. |
| Serialize(Stream, Object)Serialize(Stream, Object)Serialize(Stream, Object) | Serializes the specified Object and writes the XML document to a file using the specified Stream. |
| Serialize(Stream, Object, XmlSerializerNamespaces)Serialize(Stream, Object, XmlSerializerNamespaces)Serialize(Stream, Object, XmlSerializerNamespaces) | Serializes the specified Object and writes the XML document to a file using the specified Stream that references the specified namespaces. |
Serialize(XmlWriter, Object)Serialize(XmlWriter, Object)Serialize(XmlWriter, Object)
Serializes the specified Object and writes the XML document to a file using the specified XmlWriter.
Parameters
- xmlWriter
- XmlWriterXmlWriterXmlWriterXmlWriter
The XmlWriter used to write the XML document.
Exceptions
An error occurred during serialization. The original exception is available using the InnerException property.
Examples
Xml Serialize List C#
The following example serializes an object using an XmlWriter.
Remarks
The Serialize method converts the public fields and read/write properties of an object into XML. It does not convert methods, indexers, private fields, or read-only properties. To serialize all an object's fields and properties, both public and private, use the BinaryFormatter.
In the xmlWriter parameter, specify an object that derives from the abstract XmlWriter class. The XmlTextWriter derives from the XmlWriter.
Note
The XmlSerializer cannot serialize the following: arrays of ArrayList and arrays of List<T>.
Serialize(XmlWriter, Object, XmlSerializerNamespaces, String, String)Serialize(XmlWriter, Object, XmlSerializerNamespaces, String, String)Serialize(XmlWriter, Object, XmlSerializerNamespaces, String, String)
Serializes the specified Object and writes the XML document to a file using the specified XmlWriter, XML namespaces, and encoding.
Parameters
- xmlWriter
- XmlWriterXmlWriterXmlWriterXmlWriter
The XmlWriter used to write the XML document.
- namespaces
- XmlSerializerNamespacesXmlSerializerNamespacesXmlSerializerNamespacesXmlSerializerNamespaces
An instance of the XmlSerializerNamespaces that contains namespaces and prefixes to use.
- encodingStyle
- StringStringStringString
The encoding used in the document.
- id
- StringStringStringString
For SOAP encoded messages, the base used to generate id attributes.
Remarks
The id parameter supplies the base string used to create SOAP ids. By default, these are 'id1', 'id2' and so on. But if the parameter is set to 'myBase' the generated values are 'myBaseid1', 'myBaseid2' and so on. This functionality is used to create unique id values across the whole SOAP message.
Serialize(XmlWriter, Object, XmlSerializerNamespaces, String)Serialize(XmlWriter, Object, XmlSerializerNamespaces, String)Serialize(XmlWriter, Object, XmlSerializerNamespaces, String)
Serializes the specified object and writes the XML document to a file using the specified XmlWriter and references the specified namespaces and encoding style.
Parameters
- xmlWriter
- XmlWriterXmlWriterXmlWriterXmlWriter
The XmlWriter used to write the XML document.
- namespaces
- XmlSerializerNamespacesXmlSerializerNamespacesXmlSerializerNamespacesXmlSerializerNamespaces
The XmlSerializerNamespaces referenced by the object.
- encodingStyle
- StringStringStringString
The encoding style of the serialized XML.
Exceptions
An error occurred during serialization. The original exception is available using the InnerException property.
Remarks
When the Serialize method is invoked, the public fields and read/write properties of an object are converted into XML. Methods, indexers, private fields, and read-only properties are not serialized. To serialize all fields and properties, both public and private, use the BinaryFormatter.
Use the xmlWriter parameter to specify an object that derives from the abstract XmlWriter class, which is designed to write XML documents. The XmlTextWriter derives from the XmlWriter.
Set the encodingStyle parameter to 'http://schemas.xmlsoap.org/soap/encoding/' for SOAP version 1.1 encoding; otherwise, set it to 'http://www.w3.org/2001/12/soap-encoding' for SOAP version 1.2 encoding.
Note
The XmlSerializer cannot serialize the following: arrays of ArrayList and arrays of List<T>.
Serialize(XmlWriter, Object, XmlSerializerNamespaces)Serialize(XmlWriter, Object, XmlSerializerNamespaces)Serialize(XmlWriter, Object, XmlSerializerNamespaces)
Serializes the specified Object and writes the XML document to a file using the specified XmlWriter and references the specified namespaces.
Parameters
- xmlWriter
- XmlWriterXmlWriterXmlWriterXmlWriter
The XmlWriter used to write the XML document.
- namespaces
- XmlSerializerNamespacesXmlSerializerNamespacesXmlSerializerNamespacesXmlSerializerNamespaces
The XmlSerializerNamespaces referenced by the object.
Exceptions
An error occurred during serialization. The original exception is available using the InnerException property.
Examples
The following example serializes an object with an XmlWriter. The example also creates an XmlSerializerNamespaces and adds two namespaces to the object. Several instances of the XmlElementAttribute class are applied to the class members to specify the namespace for each element.
Remarks
When the Serialize method is invoked, the public fields and read/write properties of an object are converted into XML. Methods, indexers, private fields, and read-only properties are not serialized. To serialize all fields and properties, both public and private, use the BinaryFormatter.
Use the xmlWriter parameter to specify an object that derives from the abstract XmlWriter class, which is designed to write XML documents. The XmlTextWriter derives from the XmlWriter.
Note
The XmlSerializer cannot serialize the following: arrays of ArrayList and arrays of List<T>.
Serialize(TextWriter, Object, XmlSerializerNamespaces)Serialize(TextWriter, Object, XmlSerializerNamespaces)Serialize(TextWriter, Object, XmlSerializerNamespaces)
Serializes the specified Object and writes the XML document to a file using the specified TextWriter and references the specified namespaces.
Parameters
- textWriter
- TextWriterTextWriterTextWriterTextWriter
The TextWriter used to write the XML document.
- namespaces
- XmlSerializerNamespacesXmlSerializerNamespacesXmlSerializerNamespacesXmlSerializerNamespaces
The XmlSerializerNamespaces that contains namespaces for the generated XML document.
Exceptions
An error occurred during serialization. The original exception is available using the InnerException property.
Examples
The following example serializes an object with a TextWriter. The example also creates an XmlSerializerNamespaces object and adds two namespaces to the object. The class that defines the serialized object is also attributed with XmlElementAttribute attributes to specify the namespace for each element.
Remarks
When the Serialize method is invoked the public fields and read/write properties of an object are converted into XML. Methods, indexers, private fields, and read-only properties are not serialized. To serialize all fields and properties, both public and private, use the BinaryFormatter.
Use the textWriter parameter to specify an object that derives from the abstract TextWriter class. Classes that derive from TextWriter class include:
Note
The XmlSerializer cannot serialize the following: arrays of ArrayList and arrays of List<T>.
- See also
Serialize(Object, XmlSerializationWriter)Serialize(Object, XmlSerializationWriter)Serialize(Object, XmlSerializationWriter)Serialize(Object, XmlSerializationWriter)
Serializes the specified Object and writes the XML document to a file using the specified XmlSerializationWriter.
Parameters
- writer
- XmlSerializationWriterXmlSerializationWriterXmlSerializationWriterXmlSerializationWriter
The XmlSerializationWriter used to write the XML document.
Exceptions
Xml Serialize List String
Any attempt is made to access the method when the method is not overridden in a descendant class.
Serialize(TextWriter, Object)Serialize(TextWriter, Object)Serialize(TextWriter, Object)
Serializes the specified Object and writes the XML document to a file using the specified TextWriter.
Parameters
- textWriter
- TextWriterTextWriterTextWriterTextWriter
The TextWriter used to write the XML document.
Examples
The following example serializes an object using a TextWriter.
Remarks
The Serialize method converts the public fields and read/write properties of an object into XML. It does not convert methods, indexers, private fields, or read-only properties. To serialize all an object's fields and properties, both public and private, use the BinaryFormatter.
In the textWriter parameter, specify an object that derives from the abstract TextWriter class. Classes that derive from TextWriter include:
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Note
The XmlSerializer cannot serialize the following: arrays of ArrayList and arrays of List<T>.
- See also
Serialize(Stream, Object)Serialize(Stream, Object)Serialize(Stream, Object)
Serializes the specified Object and writes the XML document to a file using the specified Stream.
Parameters
- stream
- StreamStreamStreamStream
The Stream used to write the XML document.
Exceptions
An error occurred during serialization. The original exception is available using the InnerException property.
Examples
The following example serializes an object using a Stream object.
Remarks
The Serialize method converts the public fields and read/write properties of an object into XML. It does not convert methods, indexers, private fields, or read-only properties. To serialize all of an object's fields and properties, both public and private, use the BinaryFormatter.
In the stream parameter, specify an object that derives from the abstract Stream class. Classes that derive from Stream include:
Note
The XmlSerializer cannot serialize the following: arrays of ArrayList and arrays of List<T>.
Serialize(Stream, Object, XmlSerializerNamespaces)Serialize(Stream, Object, XmlSerializerNamespaces)Serialize(Stream, Object, XmlSerializerNamespaces)
Serializes the specified Object and writes the XML document to a file using the specified Stream that references the specified namespaces.
Parameters
- stream
- StreamStreamStreamStream
The Stream used to write the XML document.
- namespaces
- XmlSerializerNamespacesXmlSerializerNamespacesXmlSerializerNamespacesXmlSerializerNamespaces
The XmlSerializerNamespaces referenced by the object.
Exceptions
An error occurred during serialization. The original exception is available using the InnerException property.
Examples
The following example serializes an object with a Stream object. The example also creates an XmlSerializerNamespaces and adds two namespaces to the object. The class that defines the serialized object is also attributed with XmlElementAttribute attributes to specify the namespace for each element.
Remarks
When the Serialize method is invoked, the public fields and read/write properties of an object are converted into XML. Methods, indexers, private fields, and read-only properties are not serialized. To serialize all fields and properties, both public and private, use the BinaryFormatter.
Use the stream parameter to specify an object that derives from the abstract Stream class, which is designed to write to streams. Classes that derive from the Stream class include:
Note
C# Xml Serialize List Of Base Class
The XmlSerializer cannot serialize the following: arrays of ArrayList and arrays of List<T>.
Applies to
Can I serialize a generic list of serializable objects without having to specify their type.
Something like the intention behind the broken code below:
Edit:
For those who wanted to know detail: when I try to run this code, it errors on the XMLSerializer[..] line with:
Cannot serialize interface System.Runtime.Serialization.ISerializable.
If I change to List<object> I get 'There was an error generating the XML document.'. The InnerException detail is '{'The type System.Collections.Generic.List1[[Project1.Person, ConsoleFramework, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]] may not be used in this context.'}'
The person object is defined as follows:
The PersonList is just a List<Person> .
This is just for testing though, so didn't feel the details were too important. The key is I have one or more different objects, all of which are serializable. I want to serialize them all to one file. I thought the easiest way to do that would be to put them in a generic list and serialize the list in one go. But this doesn't work.
I tried with List<IXmlSerializable> as well, but that fails with
System.Xml.Serialization.IXmlSerializable cannot be serialized because it does not have a parameterless constructor.
Sorry for the lack of detail, but I am a beginner at this and don't know what detail is required. It would be helpful if people asking for more detail tried to respond in a way that would leave me understanding what details are required, or a basic answer outlining possible directions.
Also thanks to the two answers I've got so far - I could have spent a lot more time reading without getting these ideas. It's amazing how helpful people are on this site.
Dima9 Answers
I have an solution for a generic List<> with dynamic binded items.
class PersonalList it's the root element
class Person it's an single list element
class SpecialPerson inherits Person
class SuperPerson inherits Person
and the main test Source
Important is the definition and includes of the diffrent types.
slavooSee Introducing XML Serialization:
Items That Can Be Serialized
The following items can be serialized using the XmlSerializer class:
- Public read/write properties and fields of public classes
- Classes that implement
ICollectionorIEnumerable XmlElementobjectsXmlNodeobjectsDataSetobjects
In particular, ISerializable or the [Serializable] attribute does not matter.
Now that you've told us what your problem is ('it doesn't work' is not a problem statement), you can get answers to your actual problem, instead of guesses.
When you serialize a collection of a type, but will actually be serializing a collection of instances of derived types, you need to let the serializer know which types you will actually be serializing. This is also true for collections of object.
You need to use the XmlSerializer(Type,Type[]) constructor to give the list of possible types.
John SaundersJohn SaundersYou can't serialize a collection of objects without specifying the expected types. You must pass the list of expected types to the constructor of XmlSerializer (the extraTypes parameter) :
If all the objects of your list inherit from the same class, you can also use the XmlInclude attribute to specify the expected types :
I think it's best if you use methods with generic arguments, like the following :
Andreas GrechAndreas GrechI think Dreas' approach is ok. An alternative to this however is to have some static helper methods and implement IXmlSerializable on each of your methods e.g an XmlWriter extension method and the XmlReader one to read it back.
If you do go down the route of using the XmlSerializer class directly, create serialization assemblies before hand if possible, as you can take a large performance hit in constructing new XmlSerializers regularly.
For a collection you need something like this:
IanIanThe easiest way to do it, that I have found. Apply the System.Xml.Serialization.XmlArray attribute to it.
The serializer will pick up on it being an array and serialize the list's items as child nodes.
Nate BarbettiniXml Serialize List Of Objects C#
knowTypeList parameter let serialize with DataContractSerializer several known types:
Sharunas BielskisSharunas BielskisIf the XML output requirement can be changed you can always use binary serialization - which is better suited for working with heterogeneous lists of objects. Here's an example:
Use as such:
slavoo