.NET 4.x Спарсить массив JSON - C#

[DataContract]
public class Tovars
{
    [DataMember(Name = "size")]
    public string Size { get; set; }
 
    [DataMember(Name = "desc")]
    public string Desc { get; set; }
 
}
 
String file = "1.txt";
StreamReader streamreader = new StreamReader(file);
String text = streamreader.ReadToEnd();
byte[] arr = Encoding.Unicode.GetBytes(text);
MemoryStream memorystream = new MemoryStream(arr);
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(Tovars));
Tovars tovars = (Tovars)ser.ReadObject(memorystream);
MessageBox.Show(tovars.Size);

{
    "size": 17312,
    "desc": "Description",
    "list": [
        {
            "name": "12",
            "date": "34"
    }
        ]
}