DataSetConverter
Converts a DataSet to and from JSON.
using Newtonsoft.Json.Serialization;
using System;
using System.Data;
using System.Runtime.CompilerServices;
namespace Newtonsoft.Json.Converters
{
[System.Runtime.CompilerServices.NullableContext(1)]
[System.Runtime.CompilerServices.Nullable(0)]
public class DataSetConverter : JsonConverter
{
public override void WriteJson(JsonWriter writer, [System.Runtime.CompilerServices.Nullable(2)] object value, JsonSerializer serializer)
{
if (value == null)
writer.WriteNull();
else {
DataSet obj = (DataSet)value;
DefaultContractResolver defaultContractResolver = serializer.ContractResolver as DefaultContractResolver;
DataTableConverter dataTableConverter = new DataTableConverter();
writer.WriteStartObject();
foreach (DataTable table in obj.Tables) {
writer.WritePropertyName((defaultContractResolver != null) ? defaultContractResolver.GetResolvedPropertyName(table.TableName) : table.TableName);
dataTableConverter.WriteJson(writer, table, serializer);
}
writer.WriteEndObject();
}
}
[return: System.Runtime.CompilerServices.Nullable(2)]
public override object ReadJson(JsonReader reader, Type objectType, [System.Runtime.CompilerServices.Nullable(2)] object existingValue, JsonSerializer serializer)
{
if (reader.TokenType == JsonToken.Null)
return null;
DataSet dataSet = (objectType == typeof(DataSet)) ? new DataSet() : ((DataSet)Activator.CreateInstance(objectType));
DataTableConverter dataTableConverter = new DataTableConverter();
reader.ReadAndAssert();
while (reader.TokenType == JsonToken.PropertyName) {
DataTable dataTable = dataSet.Tables[(string)reader.Value];
bool num = dataTable != null;
dataTable = (DataTable)dataTableConverter.ReadJson(reader, typeof(DataTable), dataTable, serializer);
if (!num)
dataSet.Tables.Add(dataTable);
reader.ReadAndAssert();
}
return dataSet;
}
public override bool CanConvert(Type valueType)
{
return typeof(DataSet).IsAssignableFrom(valueType);
}
}
}