控件(九)——Repeater控件实现分页
Repeater控件有五个模版,我们可以根据需要选择使用,分别是:
1、ItemTempplate:正常项
2、AlternatingItemTemplate:交错项
3、HeaderTemplate:页眉
4、FooterTemplate:页脚
5、SeparaterTemplate:分隔符
下面,我们来看一个Repeater控件实现分页的例子:
一、设计界面:
二、前台代码:
- <form id="form1" runat="server">
- <div align="center" style="height: 379px; width: 780px">
- <br />
- 分 页 显 示:
- <br />
- <br />
- 当前页:
- <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
- <br />
- <br />
- <asp:Button ID="btnBefore" runat="server" Text="上一页" Font-Bold="True" Font-Size="Medium"
- OnClick="btnBefore_Click" />
- <asp:Button ID="btnNext" runat="server" Text="下一页" Font-Bold="True" Font-Size="Medium"
- OnClick="btnNext_Click" />
- <br />
- <br />
- <%-- Panel容器--%>
- <asp:Panel ID="Panel1" runat="server" Height="180px" Width="441px">
- <%-- Repeater控件--%>
- <asp:Repeater ID="Repeater1" runat="server">
- <%--正常项--%>
- <ItemTemplate>
- <%# DataBinder.Eval(Container.DataItem,"cityID") %> <%--绑定数据库字段--%>
- <%# DataBinder.Eval(Container.DataItem,"cityName") %>
- </ItemTemplate>
- <HeaderTemplate>
- <hr size="1">
- 模版页眉
- <hr color="blue" size="1">
- </HeaderTemplate>
- <FooterTemplate>
- <hr color="blue" size="1">
- 模版页脚
- <hr size="1">
- </FooterTemplate>
- <SeparatorTemplate>
- <hr color="blue" size="1">
- </SeparatorTemplate>
- </asp:Repeater>
- </asp:Panel>
- </div>
三、创建数据库:
- create database city --创建数据库
- use city
- create table city --创建城市表
- (
- cityID int primary key,
- proID int foreign key references province(proID),
- cityName varchar(50) not null
- )
- insert into city values(1,1,'北京')
- insert into city values(2,2,'长春')
- insert into city values(3,2,'吉林')
- insert into city values(4,3,'黑龙江')
- insert into city values(5,3,'辽宁')
- insert into city values(6,1,'内蒙古')
四、后台代码:
1、 创建一个DBCon类用于数据库连接:
- /// <summary>
- /// 数据库连接
- /// </summary>
- public class DBCon
- {
- public static SqlConnection createCon()
- {
- SqlConnection con= new SqlConnection("server=.;DataBase=city;User ID=sa;Pwd=123456");
- return con;
- }
- }
2、后台代码:
- protected void Page_Load(object sender, EventArgs e)
- {
- if (!Page.IsPostBack )
- {
- this.Label1.Text = "1";//设置起始页为第一页
- this.dataBindToRepeater();//绑定数据
- }
- }
- /// <summary>
- /// 绑定
- /// </summary>
- private void dataBindToRepeater()
- {
- int curPage =Convert.ToInt32( this.Label1.Text);
- SqlConnection con = DBCon.createCon();
- SqlDataAdapter sda = new SqlDataAdapter();
- sda.SelectCommand = new SqlCommand("select * from city", con);
- DataSet ds = new DataSet();
- sda.Fill(ds, "city");
- System.Web.UI.WebControls.PagedDataSource ps = new PagedDataSource();
- ps.DataSource = ds.Tables["city"].DefaultView;//设置分页数据源的视图
- ps.AllowPaging = true; //启用分页
- ps.PageSize = 2;//设置单页上显示的项数
- ps.CurrentPageIndex = curPage;//当前页的索引是从零开始的
- //控制按钮的Enabled属性。
- this.btnBefore.Enabled = true;
- this.btnNext.Enabled = true;
- if (1 == curPage)
- {
- this.btnBefore.Enabled = false;
- }
- if (ps.PageCount == curPage)
- {
- this.btnNext.Enabled = false;
- }
- //绑定控件
- this.Repeater1.DataSource = ps ;
- this.Repeater1.DataBind();
- }
- /// <summary>
- /// 下一步
- /// </summary>
- /// <param name="sender"></param>
- /// <param name="e"></param>
- protected void btnBefore_Click(object sender, EventArgs e)
- {
- this.Label1.Text=Convert.ToString( Convert.ToInt32( this.Label1.Text)-1);
- this.dataBindToRepeater();
- }
- /// <summary>
- /// 上一步
- /// </summary>
- /// <param name="sender"></param>
- /// <param name="e"></param>
- protected void btnNext_Click(object sender, EventArgs e)
- {
- this.Label1.Text=Convert.ToString(Convert.ToInt32( this.Label1.Text)+1);
- this.dataBindToRepeater();
- }
五、显示结果: