步步为营 .NET三层架构解析 七、UI的设计(登陆页面、注册页页和添加部门页面)

在我们设计好了三层架构的SQLHelper、Model、DAL和BLL后，我们要开始来调用它设计好的功能了。

首先我们来设计Login.aspx,先看界面的设计：

                            <table>
                                <tr>
                                    <td style="width: 100px; text-align: right">
                                        帐户名:</td>
                                    <td style="width: 100px">
                                        <asp:TextBox ID="txtUserName" runat="server"></asp:TextBox></td>
                                </tr>
                                <tr>
                                    <td style="width: 100px; text-align: right">
                                        密码:</td>
                                    <td style="width: 100px">
                                        <asp:TextBox ID="txtPassWord" runat="server" TextMode="Password"></asp:TextBox></td>
                                </tr>
                                <tr>
                                    <td style="width: 100px">
                                    </td>
                                    <td style="width: 100px">
                                        <asp:Button ID="btnLogin" runat="server" OnClick="btnLogin_Click1" Text="登陆" /></td>
                                </tr>
                            </table>

再来看Login.aspx.cs的设计：

记得加上这个：

using BLL;
using Model;

而后才是：

    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void btnLogin_Click1(object sender, EventArgs e)
    {
        custom Custom = new custom();
        customSystem CustomSystem = new customSystem();
        Custom = CustomSystem.GetSinglename(txtUserName.Text.Trim().ToString());
        if (Custom.ename == txtUserName.Text.Trim().ToString())
        {
             // 密码是经过MD5加密后保存到数据库的

            if (Custom.password == FormsAuthentication.HashPasswordForStoringInConfigFile(txtPassWord.Text.Trim().ToString(), "MD5"))
            {
                department Department = new department();
                departmentSystem DepartmentSystem = new departmentSystem();
                Department = DepartmentSystem.Getsingledepartment(Custom.departID);
                SetSession(Department,Custom.departID.ToString());
            }
            else
            {
                Response.Write("<script>alert('密码错误');location.href='Login.aspx';</script>");
            }
        }
        else
        {
            Response.Write("<script>alert('帐户名不存在');location.href='Login.aspx';</script>");
        }

    }
    private void SetSession(department Department,string DepartID)
    {
        if (Department == null || string.IsNullOrEmpty(DepartID))
        {
            Response.Write("<script>alert('网站运行错误或你没设置部门信息,请联系管理员.');location.href='Login.aspx';</script>");
            return;
        }
        Session["Ename"] = txtUserName.Text.Trim().ToString();
        Session["Departid"] = DepartID;
        Session["Operater"] = "";
        if (Department.departname == "控制中心")
        {
            Response.Write("<script>alert('登录成功');location.href='Default.aspx';</script>");
        }
        else
        {
            Response.Write("<script>alert('登录成功');location.href='Default2.aspx';</script>");
        }
    }

接下来我们要在App_Code文件下新建PageBase.cs

    public bool IsAdmin()
    {
        if (Session["Departid"] != null)
        {
            department Department = new department();
            departmentSystem DepartmentSystem = new departmentSystem();
            Department = DepartmentSystem.Getsingledepartment(int.Parse(Session["Departid"].ToString()));
            if (Department.departname != "控制中心")
            {
                Response.Redirect("/Web/Login.aspx");
                Response.End();
                return false;
            }
        }
        else
        {
            Response.Redirect("/Web/Login.aspx");
            Response.End();
            return false;
        }
        return true;
    }

加入下面之个方法：

再来看下ADDdepart.aspx的设计：

 <table>
            <tr>
                <td style="width: 100px">
                    部门名称：</td>
                <td style="width: 100px">
                    <asp:TextBox ID="txtDepartmentName" runat="server"></asp:TextBox></td>
            </tr>
            <tr>
                <td style="width: 100px">
                    描述：</td>
                <td style="width: 100px">
                    <asp:TextBox ID="txtDescription" runat="server"></asp:TextBox></td>
            </tr>
            <tr>
                <td style="width: 100px">
                </td>
                <td style="width: 100px">
                    <asp:Button ID="btnAdd" runat="server" OnClick="btnAdd_Click" Text="增加" /></td>
            </tr>
        </table>

ADDdepart.aspx.cs的设计：

//继承PageBase类

public partial class ADDdepart : PageBase
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            IsAdmin();
        }
    }
    protected void btnAdd_Click(object sender, EventArgs e)
    {
        department Department = new department();
        department Departmenter = new department();
        departmentSystem DepartmentSystem = new departmentSystem();
        Department.departname = txtDepartmentName.Text.Trim();
        Department.description = txtDescription.Text.Trim();
        Departmenter = DepartmentSystem.Getdepartmenter(txtDepartmentName.Text.Trim());
        if (Departmenter.id <= 0)
        {
            if (DepartmentSystem.Adddepartment(Department) >= 1)
            {
                ClientScript.RegisterClientScriptBlock(this.GetType(), "", "<script>alert('恭喜您，部门添加成功！');</script>");
            }
        }
        else
        {
            ClientScript.RegisterClientScriptBlock(this.GetType(), "", "<script>alert('您填的部门己存在,请更改!');</script>");
        }
  }
}

再来看下注册页面Register.aspx的设计：

 <table>
            <tr>
                <td style="width: 100px; text-align: right">
                    帐户名：</td>
                <td style="width: 100px">
                    <asp:TextBox ID="txtUserName" runat="server"></asp:TextBox></td>
                <td style="width: 100px">
                </td>
            </tr>
            <tr>
                <td style="width: 100px; text-align: right;">
                    姓名：</td>
                <td style="width: 100px">
                    <asp:TextBox ID="txtName" runat="server"></asp:TextBox></td>
                <td style="width: 100px">
                </td>
            </tr>
            <tr>
                <td style="width: 100px; text-align: right;">
                    年龄：</td>
                <td style="width: 100px">
                    <asp:TextBox ID="txtAge" runat="server"></asp:TextBox></td>
                <td style="width: 100px">
                </td>
            </tr>
            <tr>
                <td style="width: 100px; text-align: right;">
                    密码：</td>
                <td style="width: 100px">
                    <asp:TextBox ID="txtPassWord" runat="server" TextMode="Password"></asp:TextBox></td>
                <td style="width: 100px">
                    <asp:CompareValidator ID="CompareValidator1" runat="server" ControlToCompare="TextBox4"
                        ControlToValidate="TextBox5" ErrorMessage="密码不一样"></asp:CompareValidator></td>
            </tr>
            <tr>
                <td style="width: 100px; text-align: right;">
                    重复密码：</td>
                <td style="width: 100px">
                    <asp:TextBox ID="txtConfirmPassWord" runat="server" TextMode="Password"></asp:TextBox></td>
                <td style="width: 100px">
                </td>
            </tr>
            <tr>
                <td style="width: 100px; text-align: right;">
                    部门：</td>
                <td style="width: 100px">
                    <asp:DropDownList ID="ddlDepartment" runat="server">
                    </asp:DropDownList></td>
                <td style="width: 100px">
                </td>
            </tr>
            <tr>
                <td style="width: 100px">
                </td>
                <td style="width: 100px">
                    <asp:Button ID="btnLogin" runat="server" OnClick="btnLogin_Click" Text="注册" /></td>
                <td style="width: 100px">
                </td>
            </tr>
        </table>

下面是Register.aspx.cs的设计:

   protected void Page_Load(object sender, EventArgs e)
    {
        
        if (!IsPostBack)
        { 
            BinData();
        }
    }
    public void BinData()
    {
        List<department> Departmentlist = new List<department>();
        departmentSystem DepartmentSystem = new departmentSystem();
        Departmentlist = DepartmentSystem.GetDepartment();
        ddlDepartment.DataSource = Departmentlist;
        ddlDepartment.DataTextField = "departname";
        ddlDepartment.DataValueField = "id";
        ddlDepartment.DataBind();
    }
    protected void btnLogin_Click(object sender, EventArgs e)
    {
        custom Custom = new custom();
        customSystem CustomSystem = new customSystem();
        custom Customn = new custom();
        Customn = CustomSystem.GetSinglename(txtUserName.Text.Trim());
        if (Customn.id <= 0)
        {
            Custom.ename = txtUserName.Text.Trim();
            Custom.cname = txtName.Text.Trim();
            Custom.age = Convert.ToInt32(txtAge.Text.Trim());
            Custom.password = FormsAuthentication.HashPasswordForStoringInConfigFile(txtPassWord.Text.Trim(), "MD5");
            Custom.departID = int.Parse(ddlDepartment.SelectedValue);
            if (CustomSystem.customADD(Custom) >= 1)
            {
                ClientScript.RegisterClientScriptBlock(this.GetType(), "", "<script>alert('恭喜您，帐号添加成功！');</script>");
            }
        }
        else
        {
            ClientScript.RegisterClientScriptBlock(this.GetType(), "", "<script>alert('你输入的帐户名己存在,请更改！');</script>");
        }
    }

以上只是UI简单的调用BLL的功能,下次再讲解下GridView调用BLL和GridView的分页,可能我设计的只是较简单,欢迎大家提出你们宝贵的意见.来共同提高.欢迎拍砖.