多层多数据库模式开发的实验（八）表示层
表示层的设计牵扯到很多非技术性问题，如美工、用户接受度、操作度等问题，但是在这篇文章中，将不会涉及这些问题！这些内容和本系列文章的关系不是很密切。这里将主要从如何调用我们的逻辑层的角度讨论表示层的设计。
一般来说，表示层的职责有以下两点：
1.接受用户的输入。
2.向用户呈现信息。
总体来说，就是与用户的交互。我们就以这2个方面来进行设计，下面看看代码实现：
Default.aspx：
Code
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title>无标题页</title></head><body> <form id="form1" runat="server"> <asp:Button ID="Button1" runat="server" Text="随机新增用户记录" onclick="Button1_Click" /> <br /> <asp:Button ID="Button2" runat="server" Text="获取用户记录列表" onclick="Button2_Click" /> <br /> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <asp:Button ID="Button3" runat="server" Text="根据ID获取指定用户记录信息" onclick="Button3_Click" /> <br /> <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox> <asp:Button ID="Button4" runat="server" Text="根据姓名获取指定用户记录信息" onclick="Button4_Click" /> <asp:GridView ID="GridView1" runat="server"> </asp:GridView> <hr /> <asp:Button ID="Button5" runat="server" Text="随机新增部门记录" onclick="Button5_Click" /> <br /> <asp:Button ID="Button6" runat="server" Text="获取部门记录列表" onclick="Button6_Click" /> <br /> <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox> <asp:Button ID="Button7" runat="server" Text="根据ID获取指定部门记录信息" onclick="Button7_Click" /> <br /> <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox> <asp:Button ID="Button8" runat="server" Text="根据姓名获取指定部门记录信息" onclick="Button8_Click" /> <asp:GridView ID="GridView2" runat="server"> </asp:GridView> <hr /> 部门<asp:TextBox ID="TextBox5" runat="server"></asp:TextBox><asp:Button ID="Button9" runat="server" Text="根据ID获取指定部门的用户记录信息" onclick="Button9_Click" /> <br /> 用户<asp:TextBox ID="TextBox6" runat="server"></asp:TextBox> <br /> <asp:Button ID="Button10" runat="server" Text="加用户指定部门" onclick="Button10_Click" /> <asp:GridView ID="GridView3" runat="server"> </asp:GridView> </form></body></html>
Default.aspx.cs
Codeusing System;using System.Configuration;using System.Data;using System.Linq;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Xml.Linq;using MWC.Entity;using MWC.BusinessLogic;public partial class _Default : System.Web.UI.Page 
{
protected void Page_Load(object sender, EventArgs e)
{ 
} protected void Button1_Click(object sender, EventArgs e) { //随机新增用户记录 MWC.Entity.User ua = new MWC.Entity.User(); Random rnd = new Random(DateTime.Now.Millisecond); ua.UserID = Guid.NewGuid(); ua.UserName = "User" + rnd.Next(1,100); MWC.BusinessLogic.User ub = new MWC.BusinessLogic.User(); ub.Add(ua); } protected void Button2_Click(object sender, EventArgs e) { //获取用户记录列表 MWC.BusinessLogic.User ub = new MWC.BusinessLogic.User(); GridView1.DataSource = ub.List(); GridView1.DataBind(); } protected void Button3_Click(object sender, EventArgs e) { //根据ID获取指定用户记录信息 MWC.BusinessLogic.User ub = new MWC.BusinessLogic.User(); Guid userID = new Guid(TextBox1.Text); GridView1.DataSource = ub.Info(userID); GridView1.DataBind(); } protected void Button4_Click(object sender, EventArgs e) { //根据姓名获取指定用户记录信息 MWC.BusinessLogic.User ub = new MWC.BusinessLogic.User(); GridView1.DataSource = ub.Info(TextBox2.Text); GridView1.DataBind(); } protected void Button5_Click(object sender, EventArgs e) { //随机新增部门记录 MWC.Entity.Group ga = new MWC.Entity.Group(); Random rnd = new Random(DateTime.Now.Millisecond); ga.GroupID = Guid.NewGuid(); ga.GroupName = "Group" + rnd.Next(1, 100); MWC.BusinessLogic.Group gb = new MWC.BusinessLogic.Group(); gb.Add(ga); } protected void Button6_Click(object sender, EventArgs e) { //获取部门记录列表 MWC.BusinessLogic.Group gb = new MWC.BusinessLogic.Group(); GridView2.DataSource = gb.List(); GridView2.DataBind(); } protected void Button7_Click(object sender, EventArgs e) { //根据ID获取指定部门记录信息 MWC.BusinessLogic.Group gb = new MWC.BusinessLogic.Group(); Guid groupID = new Guid(TextBox3.Text); GridView2.DataSource = gb.Info(groupID); GridView2.DataBind(); } protected void Button8_Click(object sender, EventArgs e) { //根据姓名获取指定部门记录信息 MWC.BusinessLogic.Group gb = new MWC.BusinessLogic.Group(); GridView2.DataSource = gb.Info(TextBox4.Text); GridView2.DataBind(); } protected void Button9_Click(object sender, EventArgs e) { //根据ID获取指定部门的用户记录信息 MWC.BusinessLogic.Group gb = new MWC.BusinessLogic.Group(); Guid groupID = new Guid(TextBox5.Text); GridView3.DataSource = gb.UserList(groupID); GridView3.DataBind(); } protected void Button10_Click(object sender, EventArgs e) { //加用户指定部门 MWC.BusinessLogic.Group gb = new MWC.BusinessLogic.Group(); Guid groupID = new Guid(TextBox5.Text); Guid userID = new Guid(TextBox6.Text); gb.AddUser(groupID, userID); }
}
注意：因为这是最终的客户端，在使用我们前面的各个模块前，需要将其加入到引用。即在WEB目录下会生成bin目录，下面会包含编译好的各模块的dll文件。系统发布时会用到这些文件。
至此，我们通过一系列的文章实验了多层多数据库的开发。欢迎大家同我进行交流学习！
