public void ProcessRequest(HttpContext context)
 {
     DataModel dm = new DataModel();
     Instrument lt = new Instrument();
     lt.InstrumentID = Convert.ToInt32(context.Request.Params["InstrumentID"]);
     lt.InstrumentName = context.Request.Params["InstrumentName"];
     lt.InstrumentIntro = context.Request.Params["InstrumentIntro"];
     lt.InstrumentAmount = Convert.ToInt32(context.Request.Params["InstrumentAmount"]);
     lt.InstrumentPer = Convert.ToInt32(context.Request.Params["InstrumentPer"]);
     dm.SaveInstrument(lt);
     dm.ReturnJsonMsg(context.Response, 1, "保存成功!", lt.InstrumentID);
 }