我正在使用 Newtonsoft JSON 通过以下代码将数据集序列化为二进制 JSON。当反序列化回 DataSet 时,字段类型从 Decimal 变为 Double?有人知道出了什么问题吗?
示例代码:
static void Main(string[] args)
{
var ds = new DataSet();
var dt = ds.Tables.Add();
dt.Columns.Add("Test", typeof(Decimal));
dt.Rows.Add(new object[] { 1.23345M });
var data = DataSetToBinJSON(ds);
var ds2 = BinJSONToDataSet(data);
Console.WriteLine((ds2.Tables[0].Columns[0].DataType == typeof(Decimal)) ? "Passed" : string.Format("Failed- {0}", ds2.Tables[0].Columns[0].DataType));
Console.ReadLine();
}
/// <summary>
/// Utility function to create an optimized Binary JSON version of a DataSet
/// </summary>
public static byte[] DataSetToBinJSON(DataSet dataSet)
{
if (dataSet == null || dataSet.Tables == null || dataSet.Tables.Count == 0)
{
return null;
}
using (var ms = new MemoryStream())
{
using (var writer = new BsonWriter(ms))
{
var serializer = new JsonSerializer();
serializer.Serialize(writer, dataSet);
return ms.ToArray();
}
}
}
/// <summary>
/// Utility function to deserialize an optimized Binary JSON serialized DataSet
/// </summary>
public static DataSet BinJSONToDataSet(byte[] dataBytes)
{
if (dataBytes.Length == 0)
{
return null;
}
using (var ms = new MemoryStream(dataBytes))
{
using (var reader = new BsonReader(ms))
{
var serializer = new JsonSerializer();
return serializer.Deserialize<DataSet>(reader);
}
}
}
最佳答案
修复此集合的简单方法 FloatParseHandling = FloatParseHandling.Decimal
示例:
public class Foo
{
public object Value { get; set; }
}
Foo original = new Foo
{
Value = 1.23m
};
string json = JsonConvert.SerializeObject(original);
var settings = new JsonSerializerSettings
{
FloatParseHandling = FloatParseHandling.Decimal //hint
};
Foo actual = JsonConvert.DeserializeObject<Foo>(json, settings);
// actual.Value.GetType() == 'Decimal'
关于c# - Newtonsoft JSON- 与 DataSet 之间的转换会导致 Decimal 变为 Double?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/17597594/