ASP.Net实现姓名添加查询(三层架构)

目录

演示功能：

点击启动生成页面

 点击搜索模糊查询

点击添加跳转新界面

点击Button添加姓名

步骤：

1、建文件

2、添加引用关系

3、根据数据库中的列写Models下的XueshengModels类

4、DAL下的DBHelper（对数据库进行操作）

5、DAL数据访问层下的service文件

6、BLL业务逻辑层下调用DAL的文件

7、ui表现层主界面前端部分

8、ui表现层主界面后端部分

9、ui表现层添加界面前端部分

10、ui表现层添加界面后端部分

---

演示功能：

点击启动生成页面

 点击搜索模糊查询

点击添加跳转新界面

点击Button添加姓名

步骤：

1、建文件

下图是三层架构列表，Models里面有模拟数据库中列的类，DAL中有DBHelper和service,BLL中有BllManager文件用于ui界面直接调用

2、添加引用关系

DAL引用Models文件，BLL引用DAL和Models文件，主文件WebApplication1引用Bll和Models

3、根据数据库中的列写Models下的XueshengModels类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Models
{
  public   class XueshengModels
    {
        private string id;

        public string Id
        {
            get { return id; }
            set { id = value; }
        }
        private string name;

        public string Name
        {
            get { return name; }
            set { name = value; }
        }
        private string date;

        public string Date
        {
            get { return date; }
            set { date = value; }
        }

    }
}

4、DAL下的DBHelper（对数据库进行操作）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.SqlClient;
namespace DAL
{
 public    class DBHelper
    {
     public static string connstr = "server=.;database=Xuesheng;uid=sa;pwd=123123";
     public static SqlConnection conn = null;
     public static void Connect() {
         if (conn==null)
         {
             conn = new SqlConnection(connstr);
         }
         conn.Close();
         conn.Open();
     }
     public static bool NoQuery(string sql) {
         Connect();
         SqlCommand cmd = new SqlCommand(sql,conn);
      int temp=   cmd.ExecuteNonQuery();
      return temp > 0;
     }
     public static SqlDataReader Reader(string sql)
     {
         Connect();
         SqlCommand cmd = new SqlCommand(sql, conn);
         return cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection);
     }

    }
}

5、DAL数据访问层下的service文件

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.SqlClient;
namespace DAL
{
 public  class service
    {
     public static List Cha() {
         List list = new List();
         string sql = "select * from Xuesheng";
      SqlDataReader read=   DBHelper.Reader(sql);
      while (read.Read())
      {
          Models.XueshengModels model=new Models.XueshengModels();
          model.Id = read["Id"].ToString();
          model.Name = read["Name"].ToString();
          model.Date = read["Date"].ToString();
          list.Add(model);
      }
      return list;
     }
     public static bool jia(string name) {
         string chuan = string.Format("insert xuesheng values('{0}',GETDATE())",name);
         if (DBHelper.NoQuery(chuan))
         {
             return true;
         }
         else
         {
             return false;
         }
     }
     public static List sou(string soutext)
     {
         List list = new List();
         string sql = string.Format("select * from xuesheng where Name like '%{0}%'",soutext);

         SqlDataReader read = DBHelper.Reader(sql);
         while (read.Read())
         {
             Models.XueshengModels model = new Models.XueshengModels();
             model.Id = read["Id"].ToString();
             model.Name = read["Name"].ToString();
             model.Date = read["Date"].ToString();
             list.Add(model);
         }
         return list;
     }
    }
}

6、BLL业务逻辑层下调用DAL的文件

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BLL
{
  public   class BllManager
    {
      public static List Cha() {
          return DAL.service.Cha();
      }
      public static bool jia(string name) {

          return DAL.service.jia(name);
      }
      public static List sou(string soutext) {

          return DAL.service.sou(soutext);
      }
    }
}

7、ui表现层主界面前端部分

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication1.WebForm1" %>






    


    

    

         添加

        
        
        

        
            
                
                
                
               
            
        
    
    

8、ui表现层主界面后端部分

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication1
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        public void Page_Load(object sender, EventArgs e)
        {
         List list=   BLL.BllManager.Cha();
         GridView1.DataSource = list;
         GridView1.DataBind();
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            string soutex = TextBox1.Text;
            List list = BLL.BllManager.sou(soutex);
            GridView1.DataSource = list;
            GridView1.DataBind();

        }

    }
}

9、ui表现层添加界面前端部分

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Tianjia.aspx.cs" Inherits="WebApplication1.Tianjia" %>






    


    

    

        添加
        

         
       
 
    
    

10、ui表现层添加界面后端部分

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication1
{
    public partial class Tianjia : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            string text = TextBox1.Text.ToString();
          bool pd=BLL.BllManager.jia(text);
          if (pd)
          {
              ClientScript.RegisterStartupScript(this.GetType(), "success", "alert('成功了！'),location.href='WebForm1.aspx'", true);
          }
          else
          {
              ClientScript.RegisterStartupScript(this.GetType(), "success", "alert('失败了！')", true);

          }
        }
    }
}