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
此处设置文本框多行
点击Button添加
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
建照片文件图片，数据夹用于展示库存地址
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 ModelsCarInfo{private string infoID;public string InfoID{get { return infoID; }set { infoID = value; }}private string infoTitle;public string InfoTitle{get { return infoTitle; }set { infoTitle = value; }}private string infoPic;public string InfoPic{get { return infoPic; }set { infoPic = value; }}private string carPrice;public string CarPrice{get { return carPrice; }set { carPrice = value; }}private string pubTime;public string PubTime{get { return pubTime; }set { pubTime = 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=CarDB;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 DalService{public static List<Models.ModelsCarInfo> Query(){string cha = "select * from CarInfo";List<Models.ModelsCarInfo> list = new List<Models.ModelsCarInfo>();SqlDataReader read= DBHelper.Reader(cha);while (read.Read()){Models.ModelsCarInfo model = new Models.ModelsCarInfo();model.InfoID = read["InfoID"].ToString();model.InfoPic = read["InfoPic"].ToString();model.InfoTitle = read["InfoTitle"].ToString();model.PubTime = read["PubTime"].ToString();model.CarPrice = read["CarPrice"].ToString();list.Add(model);} ;return list;}public static bool Tianjia(string title,string price) {string sql = string.Format("insert CarInfo values('{0}','Desert.jpg',{1},GETDATE())",title,price);if ( DBHelper.NoQuery(sql)){return true;}else{return false;};}public static List<Models.ModelsCarInfo> Sou(string title){string cha = string.Format("select * from CarInfo where InfoTitle like '%{0}%'", title);List<Models.ModelsCarInfo> list = new List<Models.ModelsCarInfo>();SqlDataReader read = DBHelper.Reader(cha);while (read.Read()){Models.ModelsCarInfo model = new Models.ModelsCarInfo();model.InfoID = read["InfoID"].ToString();model.InfoPic = read["InfoPic"].ToString();model.InfoTitle = read["InfoTitle"].ToString();model.PubTime = read["PubTime"].ToString();model.CarPrice = read["CarPrice"].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.ModelsCarInfo> Query() {return DAL.DalService.Query();}public static bool Tianjia(string title, string price) {return DAL.DalService.Tianjia(title, price);}public static List<Models.ModelsCarInfo> Sou(string title) {return DAL.DalService.Sou(title);}}
}
7、ui表现层主界面前端部分
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="Index.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">添加汽车</a><asp:Label ID="Label2" runat="server" Text="Label"></asp:Label><br /><asp:Label ID="Label1" runat="server" Text="搜索"></asp:Label><asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><asp:Button ID="Button1" runat="server" Text="搜索" OnClick="Button1_Click" /><asp:Repeater ID="Repeater1" runat="server"><HeaderTemplate><table border="1"><tr><th>ID</th><th>标题</th><th>图片</th><th>价格</th><th>时间</th></tr></HeaderTemplate><ItemTemplate><tr><td><%#Eval("InfoID")%></td><td><%#Eval("InfoTitle")%></td><td><img height="50px" width="50px" src="Img/<%#Eval("InfoPic")%>"/></td><td><%#Eval("CarPrice")%></td><td><%#Eval("PubTime")%></td></tr></ItemTemplate><FooterTemplate> </table></FooterTemplate></asp:Repeater></div></form> </body> </html><tr><th>新闻ID</th><th>新闻标题 </th> <th>新闻内容 </th> <th>新闻照片</th><th>新闻类型 </th> <th>发布人</th> <th>发布时间</th></tr></HeaderTemplate><ItemTemplate><tr><td ><%#Eval("NewsID") %></td><td ><%#Eval("NewsTitle") %> </td><td > <%#Eval("NewsContent") %> </td><td > <img src="Img/<%#Eval("Pian") %>" height="50px" width="50px"/> </td><td><%#Eval("Type") %> </td><td > <%#Eval("Publisher") %> </td> <td ><%#Eval("PubTime") %></td></tr></ItemTemplate><FooterTemplate></table></FooterTemplate></asp:Repeater></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 Index
{public partial class WebForm1 : System.Web.UI.Page{protected void Page_Load(object sender, EventArgs e){if (!IsPostBack){List<Models.ModelsCarInfo> list = BLL.BLLManager.Query();this.Repeater1.DataSource = list;this.Repeater1.DataBind();Label2.Text = list.Count.ToString();}}protected void Button1_Click(object sender, EventArgs e){List<Models.ModelsCarInfo> list = BLL.BLLManager.Sou(TextBox1.Text.ToString());this.Repeater1.DataSource = list;this.Repeater1.DataBind();}}
}9、ui表现层添加界面前端部分
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Tianjia.aspx.cs" Inherits="Index.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">返回</a> <br /> <asp:Label ID="Label1" runat="server" Text=" 标题"></asp:Label><asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="标题不能为空" ControlToValidate="TextBox1"></asp:RequiredFieldValidator><br /> <asp:Label ID="Label2" runat="server" Text="价格"></asp:Label><asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="价格不能为空" ControlToValidate="TextBox2"></asp:RequiredFieldValidator><br /> <asp:Button ID="Button1" runat="server" Text="添加" OnClick="Button1_Click" /></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 Index
{public partial class Tianjia : System.Web.UI.Page{protected void Page_Load(object sender, EventArgs e){UnobtrusiveValidationMode = UnobtrusiveValidationMode.None;}protected void Button1_Click(object sender, EventArgs e){if (BLL.BLLManager.Tianjia(TextBox1.Text.ToString(), TextBox2.Text.ToString())){ClientScript.RegisterStartupScript(this.GetType(), "success", "alert('成功了！');location.href='WebForm1.aspx'", true);}else{ClientScript.RegisterStartupScript(this.GetType(), "fail", "alert('失败！');", true);};}}
}
