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  • 步步为营 .NET三层架构解析 八、UI的设计(GridView的设计及其分页)

    这次我们设计员工操作列表Custom.aspx和部门操作列表Departmant.aspx的设计.以及如何设计GridView的分页功能.

    先调用BLL设计方法获取数据的List列表,转换成PagedDataSource,再设置PagedDataSource属性来实现分页功能.

    先看Custom.aspx的设计:

    <div style="text-align: center">
            <asp:GridView ID="gvCustom" DataKeyNames="ID"
                OnRowDeleting="GridView_RowDeleting" runat="server" CellPadding="4"
                ForeColor="#333333" GridLines="None" HorizontalAlign="Center" Width="98%"
                CellSpacing="1" AutoGenerateColumns="False">
                <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
                <RowStyle BackColor="#EFF3FB" HorizontalAlign="Center" />
                <EditRowStyle BackColor="#2461BF" Font-Italic="True" HorizontalAlign="Center" VerticalAlign="Middle" />
                <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
                <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
                <HeaderStyle BackColor="Silver" Font-Bold="True" ForeColor="White" Font-Size="12px" HorizontalAlign="Center" />
                <AlternatingRowStyle BackColor="White" />
                <Columns>
                    <asp:BoundField DataField="id" HeaderText="ID" />
                    <asp:BoundField DataField="ename" HeaderText="帐户名" />
                    <asp:BoundField DataField="cname" HeaderText="姓名" />
                    <asp:BoundField DataField="age" HeaderText="年龄" />
                    <asp:BoundField DataField="departname" HeaderText="部门" />
                    <asp:HyperLinkField DataTextField="id" DataTextFormatString="修改"
                        HeaderText="修改" DataNavigateUrlFields="id" DataNavigateUrlFormatString="Updatecustom.aspx?id={0}" />
                    <asp:TemplateField HeaderText="删除">
                        <ItemTemplate>
                            <asp:LinkButton ID="LinkButton2" OnClientClick="return confirm('您确认删除该记录吗?');" runat="server" CommandName="Delete" Font-Names="宋体" Font-Strikeout="False" Font-Underline="False" ForeColor="Black">删除</asp:LinkButton>         
                        </ItemTemplate>
                    </asp:TemplateField>
                </Columns>
            </asp:GridView>
            <asp:Button ID="btnAddUser" runat="server" onclick="btnAddUser_Click"
                Text="添加用户" />
            当前页码为:<asp:Label ID="labPage" runat="server" Text="1"></asp:Label> 
            总页码为:<asp:Label ID="labBackPage" runat="server"></asp:Label>
                
            <asp:LinkButton ID="lnkbtnOne" runat="server" OnClick="lnkbtnOne_Click">第一页</asp:LinkButton>
            <asp:LinkButton ID="lnkbtnUp" runat="server" OnClick="lnkbtnUp_Click">上一页</asp:LinkButton>
             <asp:LinkButton ID="lnkbtnNext" runat="server" OnClick="lnkbtnNext_Click">下一页</asp:LinkButton>
            <asp:LinkButton ID="lnkbtnBack" runat="server" OnClick="lnkbtnBack_Click">最后一页</asp:LinkButton>
        </div>

    现来看下Custom.aspx.cs的设计:

    记在先加上:

    using BLL;
    using Model;

    然后再:

    public partial class Custom : PageBase
    {
        protected void Page_Load(object sender, EventArgs e)
        {
     
            if (!Page.IsPostBack)
            {
                //验证权限
                IsAdmin();
                BinData();
            }
     
        }
        /// <summary>
        /// 绑定数据
        /// </summary>
        private void BinData()
        {
            customSystem CustomSystem = new customSystem();
            List<custom> Customlist = new List<custom>();
            //调用BLL方法获取列表
            Customlist = CustomSystem.GetCustom();
            int curpage = Convert.ToInt32(this.labPage.Text);
            //设计分页
            PagedDataSource ps = new PagedDataSource();
            ps.DataSource = Customlist;
            ps.AllowPaging = true;
            //设置页面的条数
            ps.PageSize = 16;
            ps.CurrentPageIndex = curpage - 1;
            this.lnkbtnUp.Enabled = true;
            this.lnkbtnNext.Enabled = true;
            this.lnkbtnBack.Enabled = true;
            this.lnkbtnOne.Enabled = true;
            if (curpage == 1)
            {
                this.lnkbtnOne.Enabled = false;
                this.lnkbtnUp.Enabled = false;
     
            }
            if (curpage == ps.PageCount)
            {
                this.lnkbtnNext.Enabled = false;
                this.lnkbtnBack.Enabled = false;
     
            }
            this.labBackPage.Text = Convert.ToString(ps.PageCount);
            //绑定数据源
            gvCustom.DataSource = ps;
            gvCustom.DataBind();
        }
        /// <summary>
        ///  删除一条数据
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void GridView_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            int nid = Int32.Parse(gvCustom.DataKeys[e.RowIndex].Value.ToString());
            customSystem CustomSystem = new customSystem();
            CustomSystem.Deletecustom(nid);
            BinData();
        }
        /// <summary>
        ///  第一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkbtnOne_Click(object sender, EventArgs e)
        {
            this.labPage.Text = "1";
            BinData();
        }
        /// <summary>
        /// 上一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkbtnUp_Click(object sender, EventArgs e)
        {
            this.labPage.Text = Convert.ToString(Convert.ToInt32(this.labPage.Text) - 1);
            BinData();
        }
        /// <summary>
        /// 下一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkbtnNext_Click(object sender, EventArgs e)
        {
            this.labPage.Text = Convert.ToString(Convert.ToInt32(this.labPage.Text) + 1);
            BinData();
        }
        /// <summary>
        /// 最后一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkbtnBack_Click(object sender, EventArgs e)
        {
            this.labPage.Text = this.labBackPage.Text;
            BinData();
     
        }
        /// <summary>
        /// 跳转到增加页面
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void btnAddUser_Click(object sender, EventArgs e)
        {
            Response.Redirect("Register.aspx");
        }
    }
    再来看下Departmant.aspx的设计:
    <div style="text-align: center">
           <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4"
               CellSpacing="1" DataKeyNames="ID" ForeColor="#333333" GridLines="None" HorizontalAlign="Center"
               OnRowDeleting="GridView_RowDeleting" Width="98%">
               <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
               <RowStyle BackColor="#EFF3FB" HorizontalAlign="Center" />
               <EditRowStyle BackColor="#2461BF" Font-Italic="True" HorizontalAlign="Center" VerticalAlign="Middle" />
               <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
               <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
               <HeaderStyle BackColor="Silver" Font-Bold="True" Font-Size="12px" ForeColor="White"
                   HorizontalAlign="Center" />
               <AlternatingRowStyle BackColor="White" />
               <Columns>
                   <asp:BoundField DataField="id" HeaderText="ID" />
                   <asp:BoundField DataField="departname" HeaderText="部门名称" />
                   <asp:BoundField DataField="description" HeaderText="部门描述" />
                   <asp:HyperLinkField DataNavigateUrlFields="id" DataNavigateUrlFormatString="Updatedepart.aspx?id={0}"
                       DataTextField="id" DataTextFormatString="修改" HeaderText="修改" />
                   <asp:TemplateField HeaderText="删除">
                       <ItemTemplate>
                           <asp:LinkButton ID="LinkButton2" runat="server" CommandName="Delete" Font-Names="宋体"
                               Font-Strikeout="False" Font-Underline="False" ForeColor="Black" OnClientClick="return confirm('您确认删除该记录吗?');">删除</asp:LinkButton> 
                       </ItemTemplate>
                   </asp:TemplateField>
               </Columns>
           </asp:GridView>
           <asp:Button ID="btnAddDepartment" runat="server" onclick="btnAddDepartment_Click"
               Text="添加部门" />
           当前页码为:<asp:Label ID="labPage" runat="server" Text="1"></asp:Label>  总页码为:<asp:Label
               ID="labBackPage" runat="server"></asp:Label>
               
           <asp:LinkButton ID="lnkbtnOne" runat="server" OnClick="lnkbtnOne_Click">第一页</asp:LinkButton>
           <asp:LinkButton ID="lnkbtnUp" runat="server" OnClick="lnkbtnUp_Click">上一页</asp:LinkButton>
            <asp:LinkButton ID="lnkbtnNext" runat="server" OnClick="lnkbtnNext_Click">下一页</asp:LinkButton>
           <asp:LinkButton ID="lnkbtnBack" runat="server" OnClick="lnkbtnBack_Click">最后一页</asp:LinkButton> 
        
       </div>

    然后再看Departmant.aspx.cs的设计:

    也一样要先加上:

    using BLL;
    using Model;

    然后再:

    public partial class departmant : PageBase
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!Page.IsPostBack)
            {
                //验证权限
                IsAdmin();
                BinData();
     
            }
        }
        /// <summary>
        /// 绑定数据
        /// </summary>
        private void BinData()
        {
            departmentSystem DepartmentSystem = new departmentSystem();
            List<department> Departmentlist = new List<department>();
            //调用BLL方法获取列表
            Departmentlist = DepartmentSystem.GetDepartment();
            int curpage = Convert.ToInt32(this.labPage.Text);
            //设计分页
            PagedDataSource ps = new PagedDataSource();
            ps.DataSource = Departmentlist;
            ps.AllowPaging = true;
            //设置页面的条数
            ps.PageSize = 16;
            ps.CurrentPageIndex = curpage - 1;
            this.lnkbtnUp.Enabled = true;
            this.lnkbtnNext.Enabled = true;
            this.lnkbtnBack.Enabled = true;
            this.lnkbtnOne.Enabled = true;
            if (curpage == 1)
            {
                this.lnkbtnOne.Enabled = false;
                this.lnkbtnUp.Enabled = false;
     
            }
            if (curpage == ps.PageCount)
            {
                this.lnkbtnNext.Enabled = false;
                this.lnkbtnBack.Enabled = false;
     
            }
            this.labBackPage.Text = Convert.ToString(ps.PageCount);
            //绑定数据源
            GridView1.DataSource = ps;
            GridView1.DataBind();
        }
        /// <summary>
        /// 删除一条数据
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void GridView_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            int nid = Int32.Parse(GridView1.DataKeys[e.RowIndex].Value.ToString());
            departmentSystem DepartmentSystem = new departmentSystem();
            DepartmentSystem.Deletedepart(nid);
            BinData();
        }
        /// <summary>
        /// 第一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkbtnOne_Click(object sender, EventArgs e)
        {
            this.labPage.Text = "1";
            BinData();
        }
        /// <summary>
        /// 上一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkbtnUp_Click(object sender, EventArgs e)
        {
            this.labPage.Text = Convert.ToString(Convert.ToInt32(this.labPage.Text) - 1);
            BinData();
        }
        /// <summary>
        /// 下一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkbtnNext_Click(object sender, EventArgs e)
        {
            this.labPage.Text = Convert.ToString(Convert.ToInt32(this.labPage.Text) + 1);
            BinData();
        }
        /// <summary>
        /// 最后一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkbtnBack_Click(object sender, EventArgs e)
        {
            this.labPage.Text = this.labBackPage.Text;
            BinData();
     
        }
        /// <summary>
        /// 跳转到增加页面
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void btnAddDepartment_Click(object sender, EventArgs e)
        {
            Response.Redirect("ADDdepart.aspx");
        }
    }
    到这里我们一个简单的三层架构的应用就设计完了,可能权限的设计有点薄弱,改天我再专门讲解下权限的设计,感谢大家一直以来对我关注和支持,同时也感谢大家的拍砖.
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  • 原文地址：https://www.cnblogs.com/Leo_wl/p/1998444.html
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