JsonHelper Json转xml，Json转DataSet，DataSet转Json代码,CSharp代码库,德仔网

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【CSharp】 JsonHelper Json转xml，Json转DataSet，DataSet转Json
作者:炎锋 / 发布于2016/1/4/ 957

	using System;
	using System.Collections.Generic;
	using System.Data;
	using System.Web.Script.Serialization;
	using System.Xml;
	
	namespace PowerEasy.Software.OrderSyncLibrary.Commom.Helper
	{
	 /// <summary>
	 /// JSON数据格式转换
	 /// </summary>
	 public class JsonHelper
	 {
	 /// <summary>
	 /// 将JSON解析成DataSet（只限标准的JSON数据）
	 /// 例如：Json＝{t1:[{name:'数据name',type:'数据type'}]} 或 Json＝{t1:[{name:'数据name',type:'数据type'}],t2:[{id:'数据id',gx:'数据gx',val:'数据val'}]}
	 /// </summary>
	 /// <param name="json">Json字符串</param>
	 /// <returns>DataSet</returns>
	 public static DataSet JsonToDataSet(string json)
	 {
	 try
	 {
	 var ds = new DataSet();
	 var jss = new JavaScriptSerializer();
	 object obj = jss.DeserializeObject(json);
	 var datajson = (Dictionary<string, object>) obj;
	 foreach (var item in datajson)
	 {
	 var dt = new DataTable(item.Key);
	 var rows = (object[]) item.Value;
	 foreach (object row in rows)
	 {
	 var val = (Dictionary<string, object>) row;
	 DataRow dr = dt.NewRow();
	 foreach (var sss in val)
	 {
	 if (!dt.Columns.Contains(sss.Key))
	 {
	 dt.Columns.Add(sss.Key);
	 dr[sss.Key] = sss.Value;
	 }
	 else
	 dr[sss.Key] = sss.Value;
	 }
	 dt.Rows.Add(dr);
	 }
	 ds.Tables.Add(dt);
	 }
	 return ds;
	 }
	 catch
	 {
	 return null;
	 }
	 }
	
	
	 /// <summary>
	 /// 将DataSet转化成JSON数据
	 /// </summary>
	 /// <param name="ds"></param>
	 /// <returns></returns>
	 public static string DataSetToJson(DataSet ds)
	 {
	 string json;
	 try
	 {
	 if (ds.Tables.Count == 0)
	 throw new Exception("DataSet中Tables为0");
	 json = "{";
	 for (int i = 0; i < ds.Tables.Count; i++)
	 {
	 json += "T" + (i + 1) + ":[";
	 for (int j = 0; j < ds.Tables[i].Rows.Count; j++)
	 {
	 json += "{";
	 for (int k = 0; k < ds.Tables[i].Columns.Count; k++)
	 {
	 json += ds.Tables[i].Columns[k].ColumnName + ":'" + ds.Tables[i].Rows[j][k] + "'";
	 if (k != ds.Tables[i].Columns.Count - 1)
	 json += ",";
	 }
	 json += "}";
	 if (j != ds.Tables[i].Rows.Count - 1)
	 json += ",";
	 }
	 json += "]";
	 if (i != ds.Tables.Count - 1)
	 json += ",";
	 }
	 json += "}";
	 }
	 catch (Exception ex)
	 {
	 throw new Exception(ex.Message);
	 }
	 return json;
	 }
	
	 /// <summary>
	 /// json字符串转换为Xml对象
	 /// </summary>
	 /// <param name="sJson"></param>
	 /// <returns></returns>
	 public static XmlDocument JsonToXml(string sJson)
	 {
	 var serializer = new JavaScriptSerializer();
	 var dic = (Dictionary<string, object>) serializer.DeserializeObject(sJson);
	 var doc = new XmlDocument();
	 XmlDeclaration xmlDec = doc.CreateXmlDeclaration("1.0", "gb2312", "yes");
	 doc.InsertBefore(xmlDec, doc.DocumentElement);
	 XmlElement root = doc.CreateElement("root");
	 doc.AppendChild(root);
	 foreach (var item in dic)
	 {
	 XmlElement element = doc.CreateElement(item.Key);
	 KeyValue2Xml(element, item);
	 root.AppendChild(element);
	 }
	 return doc;
	 }
	
	 private static void KeyValue2Xml(XmlElement node, KeyValuePair<string, object> source)
	 {
	 object kValue = source.Value;
	 if (kValue.GetType() == typeof (Dictionary<string, object>))
	 {
	 var dictionary = kValue as Dictionary<string, object>;
	 if (dictionary != null)
	 foreach (var item in dictionary)
	 {
	 if (node.OwnerDocument != null)
	 {
	 XmlElement element = node.OwnerDocument.CreateElement(item.Key);
	 KeyValue2Xml(element, item);
	 node.AppendChild(element);
	 }
	 }
	 }
	 else if (kValue.GetType() == typeof (object[]))
	 {
	 var o = kValue as object[];
	 if (o != null)
	 foreach (object t in o)
	 {
	 if (node.OwnerDocument != null)
	 {
	 XmlElement xitem = node.OwnerDocument.CreateElement("Item");
	 var item = new KeyValuePair<string, object>("Item", t);
	 KeyValue2Xml(xitem, item);
	 node.AppendChild(xitem);
	 }
	 }
	 }
	 else
	 {
	 if (node.OwnerDocument != null)
	 {
	 XmlText text = node.OwnerDocument.CreateTextNode(kValue.ToString());
	 node.AppendChild(text);
	 }
	 }
	 }
	 }
	}
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