DataContractJsonSerializer Class
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Serializes objects to the JavaScript Object Notation (JSON) and deserializes JSON data to objects. This class cannot be inherited.
Assembly: System.ServiceModel.Web (in System.ServiceModel.Web.dll)
The DataContractJsonSerializer type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | DataContractJsonSerializer(Type) | Initializes a new instance of the DataContractJsonSerializer class to serialize or deserialize an object of the specified type. |
![]() | DataContractJsonSerializer(Type, IEnumerable(Of Type)) | Initializes a new instance of the DataContractJsonSerializer class to serialize or deserialize an object of a specified type with a collection of known types that may be present in the object graph. |
![]() | DataContractJsonSerializer(Type, DataContractJsonSerializerSettings) | Initializes a new instance of the DataContractJsonSerializer class to serialize or deserialize an object of the specified type and serializer settings. |
| Name | Description | |
|---|---|---|
![]() | DateTimeFormat | Gets the format of the date and time type items in object graph. |
![]() | EmitTypeInformation | Gets or sets the data contract JSON serializer settings to emit type information. |
![]() | KnownTypes | Gets a collection of types that may be present in the object graph serialized using this instance of the DataContractJsonSerializer. |
![]() | SerializeReadOnlyTypes | Gets or sets a value that specifies whether to serialize read only types. |
![]() | UseSimpleDictionaryFormat | Gets or sets a value that specifies whether to use a simple dictionary format. |
| Name | Description | |
|---|---|---|
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ReadObject | Reads a document stream in the JSON (JavaScript Object Notation) format and returns the deserialized object. |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
![]() | WriteObject | Serializes a specified object to JavaScript Object Notation (JSON) data and writes the resulting JSON to a stream. |
Use the DataContractJsonSerializer class to serialize instances of a type into a JSON document and to deserialize a JSON document into an instance of a type. For example, you can create a type named Person with properties that contain essential data, such as a name and address. You can then create and manipulate an instance of the Person class and write all of its property values in a JSON document for later retrieval. This JSON document can later be deserialized into the Person class or another class with an equivalent data contract.
Namespace SL_DataContractJsonSerializer Partial Public Class Page Inherits PhoneApplicationPage Public Sub New() InitializeComponent() End Sub 'This uses an event handler, not SL data binding Private Sub OnClick(ByVal sender As Object, ByVal args As EventArgs) txtOutput1.Text = "Create a User object and serialize it." Dim json As String = WriteFromObject() txtOutput2.Text = json.ToString() ' Displays: {"Age":42,"Name":"Bob"} txtOutput3.Text = "Deserialize the data to a User object." Dim jsonString As String = "{'Name':'Bill', 'Age':53}" Dim deserializedUser As User = ReadToObject(jsonString) txtOutput4.Text = deserializedUser.Name ' Displays: Bill txtOutput5.Text = deserializedUser.Age.ToString() ' Displays: 53 End Sub ' Create a User object and serialize it to a JSON stream. Public Shared Function WriteFromObject() As String 'Create User object. Dim user As New User("Bob", 42) 'Create a stream to serialize the object to. Dim ms As New MemoryStream() ' Serializer the User object to the stream. Dim ser As New DataContractJsonSerializer(GetType(User)) ser.WriteObject(ms, user) Dim json() As Byte = ms.ToArray() ms.Close() Return Encoding.UTF8.GetString(json, 0, json.Length) End Function ' Deserialize a JSON stream to a User object. Public Shared Function ReadToObject(ByVal json As String) As User Dim deserializedUser As New User() Dim ms As New MemoryStream(Encoding.UTF8.GetBytes(json)) Dim ser As New DataContractJsonSerializer(deserializedUser.GetType()) deserializedUser = TryCast(ser.ReadObject(ms), User) ms.Close() Return deserializedUser End Function End Class <DataContract> _ Public Class User Private privateName As String <DataMember> _ Public Property Name() As String Get Return privateName End Get Set(ByVal value As String) privateName = value End Set End Property Private privateAge As Integer <DataMember> _ Public Property Age() As Integer Get Return privateAge End Get Set(ByVal value As Integer) privateAge = value End Set End Property Public Sub New() End Sub Public Sub New(ByVal newName As String, ByVal newAge As Integer) Name = newName Age = newAge End Sub End Class End Namespace


