A data contract is a formal agreement between a service and a client that abstractly describes the data to be exchanged. That is, to communicate, the client and the service do not have to share the same types, only the same data contracts.Sep 15, 2021

What does Datacontract mean?

It is used to get or set the order of serialization and deserialization of a member. ISRequired. It instructs the serialization engine that member must be present while reading or deserializing. Name. It gets or sets the DataMember name.

What is Datacontract and DataMember?

A datacontract is a formal agreement between a client and service that abstractly describes the data to be exchanged. In WCF, the most common way of serialization is to make the type with the datacontract attribute and each member as datamember.

What is Datacontract attribute?

[DataContract] attribute specifies the data, which is to serialize (in short conversion of structured data into some format like Binary, XML etc.) and deserialize(opposite of serialization) in order to exchange between the client and the Service.

What is Datacontract serialization?

DataContractSerializer(Type, IEnumerable) Initializes a new instance of the DataContractSerializer class to serialize or deserialize an object of the specified type, and a collection of known types that may be present in the object graph.

What is DataMember in WCF?

Data Member are the fields or properties of your Data Contract class. You must specify [DataMember] attribute on the property or the field of your Data Contract class to identify it as a Data Member. DataContractSerializer will serialize only those members, which are annotated by [DataMemeber] attribute.

What is message contract in WCF?

A message contract is used to control the structure of a message body and serialization process. It is used to send/access the information in the soap header. By use of a Message Contract we can customize the parameters sent using a SOAP message between the client and the server.

What is serializable in C#?

Serialization is the process of converting an object into a stream of bytes to store the object or transmit it to memory, a database, or a file. Its main purpose is to save the state of an object in order to be able to recreate it when needed. The reverse process is called deserialization.

What is EmitDefaultValue?

EmitDefaultValue. DataMember EmitDefaultValue is a Boolean attribute with the default value of true. If the value is not provided for DataMember then the corresponding default value will be set to the member for example integer it will be set as 0, for bool it is false, any reference type is null.

What is system runtime serialization?

Contains classes that can be used for serializing and deserializing objects. Serialization is the process of converting an object or a graph of objects into a linear sequence of bytes for either storage or transmission to another location.

Which namespace is used in WCF for data serialization?

DataContractSerializer as the Default

By default WCF uses the DataContractSerializer class to serialize data types.

How do you create a data contract?

To create a basic data contract for a class or structure

  1. Declare that the type has a data contract by applying the DataContractAttribute attribute to the class. …
  2. Define the members (properties, fields, or events) that are serialized by applying the DataMemberAttribute attribute to each member.

Sep 15, 2021

Which attribute specifies that a public property of a class is capable of being serialize?

Applying the DataMemberAttribute to a field or property explicitly specifies that the member value will be serialized. In contrast, the BinaryFormatter serializes public and private fields of a type, and the XmlSerializer serializes only public fields and properties of a type.

What is a Datamember?

A data member may be of any type, including classes already defined, pointers to objects of any type, or even references to objects of any type. Data members may be private or public, but are usually held private so that values may only be changed at the discretion of the class function members.

What is the difference between data member and member function?

Data members are the data variables and member functions are the functions used to manipulate these variables and together these data members and member functions defines the properties and behavior of the objects in a Class.

What is static data member?

When a data member is declared as static , only one copy of the data is maintained for all objects of the class. Static data members are not part of objects of a given class type. As a result, the declaration of a static data member is not considered a definition.

What are member functions?

Member functions are operators and functions that are declared as members of a class. Member functions do not include operators and functions declared with the friend specifier. These are called friends of a class. You can declare a member function as static ; this is called a static member function.

What is the difference between function and member function?

An ordinary function is nothing but a function with a return type and zero or more arguments. It can be called directly in the main or other functions. A member function is declared or defined within a class or structure. It is generally called with reference to the instance of the class or structure.

What is a virtual member?

Virtual member functions are declared with the keyword virtual . They allow dynamic binding of member functions. Because all virtual functions must be member functions, virtual member functions are simply called virtual functions.