通过Jquery的Ajax方法读取将table转换为Json

1. 创建Users表

create table Users
(
UserId int identity(1,1) primary key,
UserName varchar(20)
)
insert into Users values(‘Bradley’)
insert into Users values(‘Dan’)


create table Users
(
UserId int identity(1,1) primary key,
UserName varchar(20)
)
insert into Users values(‘Bradley’)
insert into Users values(‘Dan’)

2. 创建JsonHelper类

public class JsonHelper
{
#region 序列化和反序列化
// 序列化
public static string JsonSerializer<T>(T t)
{
// 使用 DataContractJsonSerializer 将 T 对象序列化为内存流。
DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(typeof (T));
MemoryStream ms = new MemoryStream();
// 使用 WriteObject 方法将 JSON 数据写入到流中。
jsonSerializer.WriteObject(ms, t);
// 流转字符串
string jsonString = Encoding.UTF8.GetString(ms.ToArray());
ms.Close();
//替换Json的Date字符串
string p = @”/Date((d+)+d+)/”;
MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertJsonDateToDateString);
Regex reg = new Regex(p);
jsonString = reg.Replace(jsonString, matchEvaluator);
return jsonString;
}
public static T JsonDeserialize<T>(string jsonString)
{
//将”yyyy-MM-dd HH:mm:ss”格式的字符串转为”/Date(1294499956278+0800)/”格式
string p = @”d{4}-d{2}-d{2}sd{2}:d{2}:d{2}”;
MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertDateStringToJsonDate);
Regex reg = new Regex(p);
jsonString = reg.Replace(jsonString, matchEvaluator);
DataContractJsonSerializer jsonSerializer=new DataContractJsonSerializer(typeof(T));
// 字符串转流
MemoryStream ms=new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
// 通过使用 DataContractJsonSerializer 的 ReadObject 方法，将 JSON 编码数据反序列化为T
T obj = (T) jsonSerializer.ReadObject(ms);
return obj;
}
public static string ConvertJsonDateToDateString(Match match)
{
string result = string.Empty;
DateTime dateTime=new DateTime(1970,1,1);
dateTime = dateTime.AddMilliseconds(long.Parse(match.Groups[1].Value));
dateTime = dateTime.ToLocalTime();
result = dateTime.ToString(“yyyy-MM-dd HH:mm:ss”);
return result;
}
private static string ConvertDateStringToJsonDate(Match m)
{
string result = string.Empty;
DateTime dt = DateTime.Parse(m.Groups[0].Value);
dt = dt.ToUniversalTime();
TimeSpan ts = dt – DateTime.Parse(“1970-01-01”);
result = string.Format(“/Date({0}+0800)/”,ts.TotalMilliseconds);
return result;
}
#endregion
// 对象转换为Json
public static string ObjectToJson(object obj)
{
JavaScriptSerializer js=new JavaScriptSerializer();
try
{
return js.Serialize(obj);