将JSON转成DataSet（DataTable）

/// <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
{
DataSet ds = new DataSet();
JavaScriptSerializer JSS = new JavaScriptSerializer();

object obj = JSS.DeserializeObject(Json);
Dictionary<string, object> datajson = (Dictionary<string, object>)obj;

foreach (var item in datajson)
{
DataTable dt = new DataTable(item.Key);
object[] rows = (object[])item.Value;
foreach (var row in rows)
{
Dictionary<string, object> val = (Dictionary<string, object>)row;
DataRow dr = dt.NewRow();
foreach (KeyValuePair<string, object> sss in val)
{
if (!dt.Columns.Contains(sss.Key))
{
dt.Columns.Add(sss.Key.ToString());
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>
/// 根据Json返回DateTable,JSON数据格式如:
/// {table:[{column1:1,column2:2,column3:3},{column1:1,column2:2,column3:3}]}
/// items:{"2750884":{clicknum:"50",title:"鲍鱼",href:"/shop/E06B14B40110/dish/2750884#menu",desc:"<br/>",src:"15f38721-49da-48f0-a283-8057c621b472.jpg",price:78.00,units:"",list:[],joiner:""}}
/// </summary>
/// <param name="strJson">Json字符串</param>
/// <returns></returns>
public static DataTable JsonToDataTable(string strJson)
{
//取出表名
//var rg = new Regex(@"(?<={)[^:]+(?=:\[)", RegexOptions.IgnoreCase);
var rg = new Regex(@"([^:])+(?=:\{)", RegexOptions.IgnoreCase);
string strName = rg.Match(strJson).Value;
DataTable tb = null;
//去除表名
//strJson = strJson.Substring(strJson.IndexOf("{") + 1);
//strJson = strJson.Substring(0, strJson.IndexOf("}"));

//获取数据
//rg = new Regex(@"(?<={)[^}]+(?=})");
rg = new Regex(@"(?<={)[^}]+(?=})");

System.Text.RegularExpressions.MatchCollection mc = rg.Matches(strJson);
for (int i = 0; i < mc.Count; i++)
{
string strRow = mc[i].Value;
string[] strRows = strRow.Split(',');

//创建表
if (tb == null)
{
tb = new DataTable();
tb.TableName = strName;
foreach (string str in strRows)
{
var dc = new DataColumn();
string[] strCell = str.Split(':');
dc.ColumnName = strCell[0];
tb.Columns.Add(dc);
}
tb.AcceptChanges();
}

//增加内容
DataRow dr = tb.NewRow();
for (int r = 0; r < strRows.Length; r++)
{
//dr[r] = strRows[r].Split(':')[1].Trim().Replace("，", ",").Replace("：", ":").Replace("\"", "");
dr[r] = strRows[r];
}
tb.Rows.Add(dr);
tb.AcceptChanges();
}

return tb;
}