protected void Button2_Click(object sender, EventArgs e) { OrderResponse or = new OrderResponse(); ResponseResult result = or.QueryOrderResultOut(null); Newtonsoft.Json.Converters.IsoDateTimeConverter timeConverter = new Newtonsoft.Json.Converters.IsoDateTimeConverter(); timeConverter.DateTimeFormat = "yyyy'-'MM'-'dd' 'HH':'mm':'ss"; string strRes = JsonConvert.SerializeObject(result, timeConverter); TextBox1.Text = strRes; }