Guidelines

What is DataMember attribute?

What is DataMember attribute?

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.

Is DataMember attribute required?

DataMember attribute is not mandatory to add to serialize data. When DataMember attribute is not added, old XMLSerializer serializes the data. Adding a DataMember provides useful properties like order, name, isrequired which cannot be used otherwise.

What is Datacontract and DataMember in C#?

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.

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

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.

Which of the following is specified by the DataMember property?

The Data Member property specifies which object specified by the Data Source property is described by the Record set object. Was this answer helpful?

What is data contract 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 attribute?

Which is a property of the DataGrid control *?

Binding Data to the Control. For the DataGrid control to work, it should be bound to a data source using the DataSource and DataMember properties at design time or the SetDataBinding method at run time. This binding points the DataGrid to an instantiated data-source object, such as a DataSet or DataTable).

Can see the properties in two ways?

Properties can be viewed in two ways

  • A Alphabetic and Categorized.
  • B Alphabetic and Numeric.
  • C Numeric and Alphanumeric.

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 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 use of DataContract in C#?

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

What is Datacontract and DataMember?

What is Datacontract attribute?

What is the use of Datacontract?

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.

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.

Is DataContract mandatory in WCF?

No, the DataContractAttribute is not required – WCF will infer serialization rules.

Which of the following is true for ADO Net DataSet?

– DataSet provides a disconnected view of a data source. – We can create relationship between the tables in a DataSet. ‘not true for ADO.NET DataSet’ but it is true statements… that we can set a relationship between tables in dataset.

How do you serialize in C#?

The general steps for serializing are,

  1. Create an instance of File that will store serialized object.
  2. Create a stream from the file object.
  3. Create an instance of BinaryFormatter.
  4. Call serialize method of the instance passing it stream and object to serialize.

Which of the following is specified by the Datamember property?

What is DataGrid in Visual Basic?

The Visual Basic DataGridView control provides a table in which rows and columns from a database table can be displayed and modified. In this chapter we will explore the steps necessary to build a DataViewGrid into a Visual Basic application and connect it to a database table.

What is ADO.NET DataSet?

An ADO.NET DataSet contains a collection of zero or more tables represented by DataTable objects. The DataTableCollection contains all the DataTable objects in a DataSet. A DataTable is defined in the System. Data namespace and represents a single table of memory-resident data.

Why do we need serializable in Java?

Serialization in Java allows us to convert an Object to stream that we can send over the network or save it as file or store in DB for later usage. Deserialization is the process of converting Object stream to actual Java Object to be used in our program.

How to use data member attribute and parameters?

This blog lays emphasis on Data Member attribute and parameters, which can be used with this attribute. 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.

Is it mandatory to add datamember attribute to serialize data?

DataMember attribute is not mandatory to add to serialize data. When DataMember attribute is not added, old XMLSerializer serializes the data. Adding a DataMember provides useful properties like order, name, isrequired which cannot be used otherwise.

What are the limitations of using [datamember] instead of the datamember?

without [DataMember], you cannot define a different name for your property (Name=) without [DataMember], you cannot define things like IsRequired=or other useful attributes without [DataMember], you cannot leave out certain public properties – all public properties will be serialized by the DCS

Can I use the datamemberattribute on private fields?

You can apply the DataMemberAttribute to private fields or properties. Be aware that the data returned by the member (even if it’s private) will be serialized and deserialized, and thus can be viewed or intercepted by a malicious user or process.

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