我一直有數據訪問間歇性的麻煩,所以我正在重建我的項目。我有一個3層架構,通過DATA(DL)層將我的數據庫與我的App_Data文件夾一起使用Linq to Entities。數據的唯一連接字符串位於數據層(DL)web.config中。ASP.Net Linq to Entities:使用3層架構時的Web配置連接字符串
我在我的UI在「變種GetFeatured」聲明指出,「類型‘DL.RESTAURANT’在未引用的程序集定義得到一個錯誤信息。你必須添加到程序集的引用「DL「。我在用戶界面中提供了業務邏輯層的參考信息,業務邏輯層提供了對DL的參考。我錯過了什麼?
用戶接口代碼隱藏
BLgetFeatured obj2 = new BLgetFeatured();
int one = 29;
int two = 54;
int three = 49;
int four = 41;
int restID = one;
var GetFeatured = obj2.getFeatured(restID);
var GetFeatured = obj2.getFeatured(restID);
litRestName.Text = GetFeatured[0].REST_NAME;
litRestStreet.Text = GetFeatured[0].REST_STREET1;
litRestPhone.Text = GetFeatured[0].REST_PHONE;
litRestCity.Text = GetFeatured[0].CITY.CITY_NAME;
litRestCuisine.Text = GetFeatured[0].CUISINE.CUISINE_NAME;
litRestShortDesc.Text = GetFeatured[0].REST_DESC;
restImage.ImageUrl = "~/Images/" + GetFeatured[0].REST_IMAGE;
業務邏輯層
using DL;
namespace BL
{
public class BLgetRestaurants
{
public List<RESTAURANT> getRestaurants(string cuisineName, string cityName, string priceName, string ratingName)
{
DLgetRestaurants obj = new DLgetRestaurants();
var restaurantList = obj.getRestaurants(cuisineName, cityName, priceName, ratingName);
return restaurantList;
}
}
}
數據層(DL)
namespace DL
{
public class DLgetFeatured
{
FCGuide db = new FCGuide();
public List<RESTAURANT> getFeatured(int restID)
{
var restList = (from RESTAURANT in db.RESTAURANTs.Include("CUISINE").Include("CITY")
where RESTAURANT.REST_ID == restID
select RESTAURANT).ToList();
var result = (from RESTAURANT in db.RESTAURANTs.Include("CITY").Include("CUISINE")
where RESTAURANT.CUISINE.CUISINE_ID == RESTAURANT.CUISINE_ID
&& RESTAURANT.CITY.CITY_ID == RESTAURANT.CITY_ID
orderby RESTAURANT.REST_NAME ascending
select RESTAURANT).ToList();
return restList;
}
}
}
您意識到您直接從UI查詢您的DAL,而不是實際使用業務層類。 – tvanfosson
對不起,我不這麼認爲。 BLgetFeatured obj2 = new BLgetFeatured(); int one = 29; int two = 54; int three = 49; int four = 41; int restID = 1; var GetFeatured = obj2.getFeatured(restID); – Susan
看看上面的代碼(我已經將更多的代碼添加到了UI中),並且我相信BLgetFeatured obj2 = new BLgetFeatured(),它將進入我的BL層。這是不正確的? – Susan