public void ProcessRequest(HttpContext context) { Dictionary <SqlConnection, SqlTransaction> MyDict = new Dictionary <SqlConnection, SqlTransaction>(); try { context.Response.ContentType = "text/plain"; //获取要删除的表的id int id = Convert.ToInt32(context.Request["Id"]); BLL.FarmlandMeg newFarmlandMegBll = new BLL.FarmlandMeg(); //删除操作 bool resultFarmlandMeg = newFarmlandMegBll.Delete(id, MyDict); BLL.SoilNutrientMeg newSoilNutrientMegBll = new BLL.SoilNutrientMeg(); List <Model.SoilNutrientMeg> newSoilNutrientMegModelList = newSoilNutrientMegBll.GetModelList(" All_id = " + id); bool resultSoilNutrientMeg = newSoilNutrientMegBll.Delete(newSoilNutrientMegModelList[0].Id, MyDict); BLL.CropsMeg newCropsMegBll = new BLL.CropsMeg(); List <Model.CropsMeg> newCropsMegModelList = newCropsMegBll.GetModelList(" All_id = " + id); bool resultCropsMeg = newCropsMegBll.Delete(newCropsMegModelList[0].Id, MyDict); BLL.FarmlandMSug newFarmlandMSugBll = new BLL.FarmlandMSug(); List <Model.FarmlandMSug> newFarmlandMSugModelList = newFarmlandMSugBll.GetModelList(" All_id = " + id); bool resultFarmlandMSug = newFarmlandMSugBll.Delete(newFarmlandMSugModelList[0].Id, MyDict); BLL.Picture newPictureBll = new BLL.Picture(); List <Model.Picture> newPictureModelList = newPictureBll.GetModelList(" All_id = " + id); List <bool> resultPictureList = new List <bool>(); //判断是否存在图片 if (newPictureModelList.Count > 0) { //用于存储图片绝对路径的集合 List <String> filesPath = new List <string>(); //如果存在将其删除 foreach (Model.Picture Pic in newPictureModelList) { Model.Picture newPictureModel = newPictureBll.GetModel(Pic.Id); //图片相对路径 string picPath = newPictureModel.picturePath; //图片绝对路径 string absolutePath = context.Request.MapPath(picPath); //将绝对路径添加到集合中 filesPath.Add(absolutePath); //将删除结果累计添加到集合中 resultPictureList.Add(newPictureBll.Delete(Pic.Id, MyDict)); } //删除图片操作 foreach (String path in filesPath) { if (File.Exists(path)) { //如果文件存在,则删除 File.Delete(path); } } } if (resultFarmlandMeg && resultSoilNutrientMeg && resultFarmlandMSug && resultCropsMeg && !resultPictureList.Contains(false)) { context.Response.Write("ok"); } else { context.Response.Write("删除失败"); } QuitConnTrans(MyDict); } catch (Exception E) { ExceptionQuitConnTrans(MyDict); //如有异常 将异常信息返回 context.Response.Write(E.Message); //将信息返回给客户端,停止该页的执行 context.Response.End(); } }