转:Jquery json的超强组合(DataTable2JSON)

原文:http://www.cnblogs.com/symjie520/archive/2008/07/21/1155997.html

今天使用了jquery提供的对json的操作的函数，感觉超级爽哦！下面就把代码贴出
js

function getjson()
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{
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$("[id=ready]").remove();//返回id=ready的所有dom元素
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$.ajax(
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{
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type:"get",
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dataType:"json",
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url:"jspage.aspx",
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data:"id=1",
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success:function(msg)
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{
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var data=msg.bbslist;
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//$("#databox").html(msg);
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//cleartext();
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$.each(data,function(i,n)
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{
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var row=$("#temp").clone();
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row.find("#listtile").text(n.listtile);
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row.find("#listvalue").text(n.listvalue);
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row.attr("id","ready");
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row.appendTo("#mainbox");
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}
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);
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}
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}
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);
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}

html代码

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" >
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<head>
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<title>Untitled Page</title>
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</head>
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<body onload="getjson();">
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<div id="setpage"></div>
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<div id="mainbox">
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<div id="temp">
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<div id="listtile"></div>
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<div id="listvalue"></div>
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</div>
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</div>
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</body>
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</html>
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using System;
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using System.Data;
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using System.Configuration;
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using System.Web;
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using System.Web.Security;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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using System.Web.UI.WebControls.WebParts;
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using System.Web.UI.HtmlControls;
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using System.Text;
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/// <summary>
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/// Summary description for DataTableToJSON
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/// </summary>
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public class DataTableToJSON
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{
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public DataTableToJSON()
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{
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//
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// TODO: Add constructor logic here
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//
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}
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public static string DtToSON(DataTable dt)
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{
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StringBuilder jsonBuilder = new StringBuilder();
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jsonBuilder.Append("{\"");
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jsonBuilder.Append(dt.TableName.ToString());
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jsonBuilder.Append("\":[");
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for (int i = 0; i < dt.Rows.Count; i++)
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{
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jsonBuilder.Append("{");
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for (int j = 0; j < dt.Columns.Count; j++)
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{
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jsonBuilder.Append("\"");
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jsonBuilder.Append(dt.Columns[j].ColumnName);
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jsonBuilder.Append("\":\"");
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jsonBuilder.Append(dt.Rows[i][j].ToString());
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jsonBuilder.Append("\",");
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}
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jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
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jsonBuilder.Append("},");
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}
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jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
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jsonBuilder.Append("]");
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jsonBuilder.Append("}");
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return jsonBuilder.ToString();
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}
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}
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这就是主要的代码了，相信各位都会组合吧，我就不再多介绍了，大家体会一下哈！
//DataTable转成Json
        public static string DataTableToJson(string jsonName, DataTable dt)
        {
            StringBuilder Json = new StringBuilder();
            Json.Append("{\"" + jsonName + "\":[");
            if (dt.Rows.Count > 0)
            {
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    Json.Append("{");
                    for (int j = 0; j < dt.Columns.Count; j++)
                    {
                        Json.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":\"" + dt.Rows[i][j].ToString() + "\"");
                        if (j < dt.Columns.Count - 1)
                        {
                            Json.Append(",");
                        }
                    }
                    Json.Append("}");
                    if (i < dt.Rows.Count - 1)
                    {
                        Json.Append(",");
                    }
                }
            }
            Json.Append("]}");
            return Json.ToString();
        }

        //List转成json
        public static string ObjectToJson<T>(string jsonName, IList<T> IL)
        {
            StringBuilder Json = new StringBuilder();
            Json.Append("{\"" + jsonName + "\":[");
            if (IL.Count > 0)
            {
                for (int i = 0; i < IL.Count; i++)
                {
                    T obj = Activator.CreateInstance<T>();
                    Type type = obj.GetType();
                    PropertyInfo[] pis = type.GetProperties();
                    Json.Append("{");
                    for (int j = 0; j < pis.Length; j++)
                    {
                        Json.Append("\"" + pis[j].Name.ToString() + "\":\"" + pis[j].GetValue(IL[i], null) + "\"");
                        if (j < pis.Length - 1)
                        {
                            Json.Append(",");
                        }
                    }
                    Json.Append("}");
                    if (i < IL.Count - 1)
                    {
                        Json.Append(",");
                    }
                }
            }
            Json.Append("]}");
            return Json.ToString();
        }