C#对象转JSON字符串和JSON字符串转对象

摘要: C#对象转JSON字符串和JSON字符串转对象

C#对象转JSON字符串和JSON字符串转对象

/* 创建者：菜刀居士的博客
* 创建日期: 2014年09月03号
* 功能： Json操作
*
*/

namespace Net.String.ConsoleApplication
{
using System;
using System.Data;
using System.Collections;
using System.ComponentModel;
using System.Collections.Generic;
using System.Web.Script.Serialization;

public class JsonHelper
{
/// <summary>
/// 把json字符串转成对象
/// </summary>
/// <typeparam name="T">对象</typeparam>
/// <param name="data">json字符串</param>
public static T Deserialize<T>(string data)
{
System.Web.Script.Serialization.JavaScriptSerializer json = new System.Web.Script.Serialization.JavaScriptSerializer();
return json.Deserialize<T>(data);
}

/// <summary>
/// 把对象转成json字符串
/// </summary>
/// <param name="o">对象</param>
/// <returns>json字符串</returns>
public static string Serialize(object o)
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
System.Web.Script.Serialization.JavaScriptSerializer json = new System.Web.Script.Serialization.JavaScriptSerializer();
json.Serialize(o, sb);
return sb.ToString();
}

/// <summary>
/// 把DataTable对象转成json字符串
/// </summary>
public string ToJson(DataTable dt)
{
JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
ArrayList arrayList = new ArrayList();
foreach (DataRow dataRow in dt.Rows)
{
Dictionary<string, object> dictionary = new Dictionary<string, object>();
foreach (DataColumn dataColumn in dt.Columns)
{
dictionary.Add(dataColumn.ColumnName, dataRow[dataColumn.ColumnName]);
}
arrayList.Add(dictionary);
}
return javaScriptSerializer.Serialize(arrayList);
}
}

public static class EnumerableExtension
{
/// <summary>
/// 集合添加一个对象
/// </summary>
public static IEnumerable<T> Add<T>(this IEnumerable<T> e, T value)
{
foreach (var cur in e)
{ yield return cur; }
yield return value;
}

/// <summary>
/// 把集合转成DataTable
/// </summary>
public static DataTable ConvertToDataTable<T>(this IEnumerable<T> enumerable)
{
var dataTable = new DataTable();
foreach (PropertyDescriptor pd in TypeDescriptor.GetProperties(typeof(T)))
{
dataTable.Columns.Add(pd.Name, pd.PropertyType);
}
foreach (T item in enumerable)
{
var Row = dataTable.NewRow();

foreach (PropertyDescriptor dp in TypeDescriptor.GetProperties(typeof(T)))
{
Row[dp.Name] = dp.GetValue(item);
}
dataTable.Rows.Add(Row);
}
return dataTable;
}
}
}