ASP.Net实现姓名添加查询(三层架构)

发布时间：2023年12月22日

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<Models.XueshengModels> Cha() {
         List<Models.XueshengModels> list = new List<Models.XueshengModels>();
         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<Models.XueshengModels> sou(string soutext)
     {
         List<Models.XueshengModels> list = new List<Models.XueshengModels>();
         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<Models.XueshengModels> Cha() {
          return DAL.service.Cha();
      }
      public static bool jia(string name) {

          return DAL.service.jia(name);
      }
      public static List<Models.XueshengModels> 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" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <a href="Tianjia.aspx"> 添加</a><br />
        <asp:Label ID="Label1" runat="server" Text=a"搜索"></asp:Label>
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="确定" />
<hr />
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
            <Columns>
                <asp:BoundField DataField="Id" FooterText="id" HeaderText="id" />
                <asp:BoundField DataField="Name" FooterText="name" HeaderText="name" />
                <asp:BoundField DataField="Date" FooterText="date" HeaderText="date" />
               
            </Columns>
        </asp:GridView>
    </div>
    </form>
</body>
</html>

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<Models.XueshengModels> list=   BLL.BllManager.Cha();
         GridView1.DataSource = list;
         GridView1.DataBind();
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            string soutex = TextBox1.Text;
            List<Models.XueshengModels> 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" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <a href="WebForm1.aspx">添加</a>
        <br />
        <asp:Label ID="Label1" runat="server" Text="添加"></asp:Label> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
       <br /> <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" style="height: 21px" />
    </div>
    </form>
</body>
</html>

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);

          }
        }
    }
}

文章来源:https://blog.csdn.net/Mr_wangzu/article/details/135161475
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