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  • C#对象转JSON字符串和JSON字符串转对象

    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;
            }
        }
     }
    

      

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  • 原文地址:https://www.cnblogs.com/yexiaoyanzi/p/5786531.html
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