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NetDataContractSerializer.WriteStartObject Method (XmlDictionaryWriter, Object)

Writes the opening XML element using an XmlDictionaryWriter.

Namespace:  System.Runtime.Serialization
Assembly:  System.Runtime.Serialization (in System.Runtime.Serialization.dll)

'Declaration
Public Overrides Sub WriteStartObject ( _
	writer As XmlDictionaryWriter, _
	graph As Object _
)

Parameters

writer
Type: System.Xml.XmlDictionaryWriter

The XmlDictionaryWriter used to write the XML element.

graph
Type: System.Object

The object to serialize. All child objects of this root object are automatically serialized.

ExceptionCondition
InvalidDataContractException

the type being serialized does not conform to data contract rules. For example, the DataContractAttribute attribute has not been applied to the type.

SerializationException

there is a problem with the instance being serialized.

QuotaExceededException

the maximum number of object to serialize has been exceeded. Check the MaxItemsInObjectGraph property.

The following example creates an object to serialize, an instance of the NetDataContractSerializer, and an instance of the XmlDictionaryWriter class. The example uses the WriteStartObject, WriteObjectContent, and WriteEndObject methods to write the object data into the XML document.

NotInheritable Public Class ShowWriteStartObject

    Public Shared Sub WriteObjectData(ByVal path As String) 
        ' Create the object to serialize. 
        Dim p As New Person("Lynn", "Tsoflias", 9876)

        ' Create the writer. 
        Dim fs As New FileStream(path, FileMode.Create)
        Dim writer As XmlDictionaryWriter = XmlDictionaryWriter.CreateTextWriter(fs)

        Dim ser As New System.Runtime.Serialization.NetDataContractSerializer()        

        ' Use the writer to start a document.
        writer.WriteStartDocument(True)

        ' Use the serializer to write the start of the  
        ' object data. Use it again to write the object 
        ' data. 
        ser.WriteStartObject(writer, p)
        writer.WriteStartAttribute("MyAttribute")
        writer.WriteString("My Text")
        writer.WriteEndAttribute()

        ser.WriteObjectContent(writer, p)

        ' Use the serializer to write the end of the  
        ' object data. Then use the writer to write the end 
        ' of the document.
        ser.WriteEndObject(writer)
        writer.WriteEndDocument()

        Console.WriteLine("Done")

        ' Close and release the writer resources.
        writer.Flush()
        fs.Flush()
        fs.Close()

    End Sub

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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