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EF数据持久化(三层架构，客户增删)

news 来源：原创 2025/5/10 22:56:32

效果图

点击新增按钮

点击添加

添加成功展示新增数据

点击删除，出现删除选项，点击确定根据id删除成功

成功删除

实现过程

Model设置具体流程在下面链接中

https://blog.csdn.net/Mr_wangzu/article/details/136805824?spm=1001.2014.3001.5501

DAL

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using WebApplication1.Models;

namespace WebApplication1.DAL
{
    public class CustomersDBService
    {
        public static List<Customer> Show(){
            CustomersDBEntities db = new CustomersDBEntities();
            return db.Customers.ToList();

        }
        public static bool Add(Customer cu) {
            CustomersDBEntities db = new CustomersDBEntities();
            db.Customers.Add(cu);
           return db.SaveChanges()>0;

        
        }
        public static bool shan(int id) {

            CustomersDBEntities db = new CustomersDBEntities();
            Customer model = new Customer();
            model.CID = id;
            db.Entry(model).State = System.Data.EntityState.Deleted;
            db.Customers.Remove(model);
          return  db.SaveChanges()>0;
          
        
        }
    }
}

BLL

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using WebApplication1.Models;
namespace WebApplication1.BLL
{
    public class CustomersDBManger
    {
        public static List<Customer> Show() {
            return DAL.CustomersDBService.Show();
        }
        public static bool Add(Customer cu) {
            return DAL.CustomersDBService.Add(cu);
        }
        public static bool shan(int id) {
            return DAL.CustomersDBService.shan(id);
        }
    }
}

WebForm1.aspx

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>
    <style type="text/css">
        .auto-style1 {
            height: 25px;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <table border="1">
            <tr>
                <td>编号</td>
                 <td>客户名</td>
                 <td>性别</td>
                 <td>生日</td>
                 <td>电话</td>
                 <td>邮件</td>
                 <td>操作</td>
            </tr>
            
        <asp:Repeater ID="Repeater1" runat="server" OnItemCommand="Repeater1_ItemCommand">
            <ItemTemplate>
                 <tr>
               <td><%#Eval("CID") %></td>
                       <td><%#Eval("CName") %></td>
                       <td><%#Eval("CGender") %></td>  
                       <td><%#Eval("CBirthday") %></td>
                       <td><%#Eval("CTel") %></td>
                       <td><%#Eval("CEmail") %></td>
           <td><a href="WebForm2.aspx">新增</a> 
               <asp:LinkButton ID="LinkButton1" runat="server" CommandArgument='<%#Eval("CID") %>' CommandName="del"  onClientClick="return confirm('确定删除？');" >删除</asp:LinkButton>
           </td>
 </tr>
            </ItemTemplate>
           
        </asp:Repeater>
                
            </table>
    </div>
    </form>
</body>
</html>

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;
using WebApplication1.Models;
namespace WebApplication1
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
          Repeater1.DataSource=  BLL.CustomersDBManger.Show();
          Repeater1.DataBind();
        }

        
            protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e){
                    int id = Convert.ToInt32(e.CommandArgument);
                    if (e.CommandName=="del")
                    {
                        bool sta = BLL.CustomersDBManger.shan(id);
                        string st = sta == true ? "成功" : "失败";
                ClientScript.RegisterStartupScript(this.GetType(),"alert","alert('成功')",true);
                        
                        Repeater1.DataSource = BLL.CustomersDBManger.Show();
                        Repeater1.DataBind();
                    }
            
            }

    }
}

WebForm2.aspx

前端部分

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm2.aspx.cs" Inherits="WebApplication1.WebForm2" %>

<!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>
    <a href="WebForm1.aspx">返回</a>
    <form id="form1" runat="server">
    <div>
        <asp:Label ID="Label1" runat="server" Text="姓名"></asp:Label><asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
  <br />  <asp:Label ID="Label5" runat="server" Text="性别"></asp:Label>    <asp:DropDownList ID="DropDownList1" runat="server">
            <asp:ListItem>男</asp:ListItem>
            <asp:ListItem>女</asp:ListItem>
        </asp:DropDownList>
            <br />   <asp:Label ID="Label2" runat="server" Text="生日"></asp:Label><asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>

                  <br />   <asp:Label ID="Label3" runat="server" Text="电话"></asp:Label><asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
         <br />   <asp:Label ID="Label4" runat="server" Text="邮箱"></asp:Label><asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>

    
    </div>
        <asp:Button ID="Button1" runat="server" Text="添加" OnClick="Button1_Click" />

    </form>
</body>
</html>

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;
using WebApplication1.Models;
namespace WebApplication1
{
    public partial class WebForm2 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            try
            {
                if (TextBox1.Text != "" && DropDownList1.SelectedValue.ToString() != "")
                {
                    Customer model = new Customer();
                    model.CName = TextBox1.Text;
                    model.CGender = DropDownList1.SelectedValue.ToString();
                    model.CBirthday = DateTime.Parse(TextBox2.Text);
                    model.CTel = TextBox3.Text;
                    model.CEmail = TextBox4.Text;
                    if (BLL.CustomersDBManger.Add(model))
                    {
                        ClientScript.RegisterStartupScript(this.GetType(), "success", "alert('正确添加'),location.href='WebForm1.aspx'", true);
                    }
                    else
                    {
                        ClientScript.RegisterStartupScript(this.GetType(), "fail", "alert('错误！')", true);

                    };

                }
                else
                {
                    Response.Write("请完善");
                }
            
            }
            catch (Exception s)
            {

                Console.WriteLine(s);  
            }
           

        }
    }
}