JsonXmlDataContract.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / Serialization / System / Runtime / Serialization / Json / JsonXmlDataContract.cs / 1305376 / JsonXmlDataContract.cs
                        

                        
                            //---------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//---------------------------------------------------------------

namespace System.Runtime.Serialization.Json 
{
    using System.Xml; 
    using System.Collections.Generic; 
    using System.IO;
    using System.Text; 

    class JsonXmlDataContract : JsonDataContract
    {
        public JsonXmlDataContract(XmlDataContract traditionalXmlDataContract) : base(traditionalXmlDataContract) 
        {
        } 
 
        public override object ReadJsonValueCore(XmlReaderDelegator jsonReader, XmlObjectSerializerReadContextComplexJson context)
        { 
            string xmlContent = jsonReader.ReadElementContentAsString();

            DataContractSerializer dataContractSerializer = new DataContractSerializer(TraditionalDataContract.UnderlyingType,
                GetKnownTypesFromContext(context, (context == null) ? null : context.SerializerKnownTypeList), 1, false, false, null); //  maxItemsInObjectGraph //  ignoreExtensionDataObject //  preserveObjectReferences //  dataContractSurrogate 

            MemoryStream memoryStream = new MemoryStream(Encoding.UTF8.GetBytes(xmlContent)); 
            object xmlValue; 
            XmlDictionaryReaderQuotas quotas = ((JsonReaderDelegator) jsonReader).ReaderQuotas;
            if (quotas == null) 
            {
                xmlValue = dataContractSerializer.ReadObject(memoryStream);
            }
            else 
            {
                xmlValue = dataContractSerializer.ReadObject(XmlDictionaryReader.CreateTextReader(memoryStream, quotas)); 
            } 
            if (context != null)
            { 
                context.AddNewObject(xmlValue);
            }
            return xmlValue;
        } 

        public override void WriteJsonValueCore(XmlWriterDelegator jsonWriter, object obj, XmlObjectSerializerWriteContextComplexJson context, RuntimeTypeHandle declaredTypeHandle) 
        { 
            DataContractSerializer dataContractSerializer = new DataContractSerializer(Type.GetTypeFromHandle(declaredTypeHandle),
                GetKnownTypesFromContext(context, (context == null) ? null : context.SerializerKnownTypeList), 1, false, false, null); //  maxItemsInObjectGraph //  ignoreExtensionDataObject //  preserveObjectReferences //  dataContractSurrogate 

            MemoryStream memoryStream = new MemoryStream();
            dataContractSerializer.WriteObject(memoryStream, obj);
            memoryStream.Position = 0; 
            string serialized = new StreamReader(memoryStream).ReadToEnd();
            jsonWriter.WriteString(serialized); 
        } 

        List GetKnownTypesFromContext(XmlObjectSerializerContext context, IList serializerKnownTypeList) 
        {
            List knownTypesList = new List();
            if (context != null)
            { 
                List stableNames = new List();
                Dictionary[] entries = context.scopedKnownTypes.dataContractDictionaries; 
                if (entries != null) 
                {
                    for (int i = 0; i < entries.Length; i++) 
                    {
                        Dictionary entry = entries[i];
                        if (entry != null)
                        { 
                            foreach (KeyValuePair pair in entry)
                            { 
                                if (!stableNames.Contains(pair.Key)) 
                                {
                                    stableNames.Add(pair.Key); 
                                    knownTypesList.Add(pair.Value.UnderlyingType);
                                }
                            }
                        } 
                    }
                } 
                if (serializerKnownTypeList != null) 
                {
                    knownTypesList.AddRange(serializerKnownTypeList); 
                }
            }
            return knownTypesList;
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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