.net如何读取json数据

Question

[{"TaskRoleSpaces":"","TaskRoles":"","ProxyUserID":"5d9ad5dc1c5e494db1d1b4d8d79b60a7","UserID":"5d9ad5dc1c5e494db1d1b4d8d79b60a7","UserName":"姓名","UserSystemName":"2234","OperationName":"送合同负责人","OperationValue":"同意","OperationValueText":"","SignDate":"2013-06-19 10:31:26","Comment":"同意","FormDataHashCode":"","SignatureDivID":""},{"TaskRoleSpaces":"","TaskRoles":"","ProxyUserID":"2c96c3943826ea93013826eafe6d0089","UserID":"2c96c3943826ea93013826eafe6d0089","UserName":"姓名2","UserSystemName":"1234","OperationName":"送合同负责人","OperationValue":"同意","OperationValueText":"","SignDate":"2013-06-20 09:37:11","Comment":"同意","FormDataHashCode":"","SignatureDivID":""}]这个是存放到数据库的一个字段中，放到一个string里后，如何得到像“UserName”或“UserID”的值

Answer 1

c# 解析JSON的几种办法 

Answer 2

C#解析json=>http://www.cnblogs.com/txw1958/archive/2012/08/01/csharp-json.html

Answer 3

JobInfo实体类：
public class JobInfo
    {
        public string TaskRoleSpaces { get; set; }
        public string TaskRoles { get; set; }
        public string ProxyUserID { get; set; }
        public string UserID { get; set; }
        public string UserName { get; set; }
        public string UserSystemName { get; set; }
        public string OperationName { get; set; }
        public string OperationValue { get; set; }
        public string OperationValueText { get; set; }
        public DateTime SignDate { get; set; }
        public string Comment { get; set; }
        public string FormDataHashCode { get; set; }
        public string SignatureDivID { get; set; }
    }测试类：//引用 Newtonsoft.Json.dll，这个文件可以去网站下载
static void Main(string[] args)
        {
            string json = @"[{'TaskRoleSpaces':'','TaskRoles':'','ProxyUserID':'5d9ad5dc1c5e494db1d1b4d8d79b60a7','UserID':'5d9ad5dc1c5e494db1d1b4d8d79b60a7','UserName':'姓名','UserSystemName':'2234','OperationName':'送合同负责人','OperationValue':'同意','OperationValueText':'','SignDate':'2013-06-19 10:31:26','Comment':'同意','FormDataHashCode':'','SignatureDivID':''},{'TaskRoleSpaces':'','TaskRoles':'','ProxyUserID':'2c96c3943826ea93013826eafe6d0089','UserID':'2c96c3943826ea93013826eafe6d0089','UserName':'姓名2','UserSystemName':'1234','OperationName':'送合同负责人','OperationValue':'同意','OperationValueText':'','SignDate':'2013-06-20 09:37:11','Comment':'同意','FormDataHashCode':'','SignatureDivID':''}]
";            List<JobInfo> jobInfoList = JsonConvert.DeserializeObject<List<JobInfo>>(json);            foreach (JobInfo jobInfo in jobInfoList)
            {
                Console.WriteLine("UserName:" + jobInfo.UserName + "UserID:" + jobInfo.UserID);
            }
        }