将json转换为二维数组

My json data:

我的json数据:

{
   "d":[
      {
         "__type":"DashBoardControl.Info.DashBoardSettingInfo",
         "VisitTime":"183",
         "Browser":"Firefox"
      },
      {
         "__type":"DashBoardControl.Info.DashBoardSettingInfo",
         "VisitTime":"28",
         "Browser":"Chrome"

      },
      {
         "__type":"DashBoardControl.Info.DashBoardSettingInfo",
         "VisitTime":"2",
         "Browser":"IE"
      },
      {
         "__type":"DashBoardControl.Info.DashBoardSettingInfo",
         "VisitTime":"1",
         "Browser":"Opera"
      }
   ]
}
{
   "d":[
      {