WebForm(分页)

public partial class _Default : System.Web.UI.Page
{
    int num = 5;
    protected void Page_Load(object sender, EventArgs e)
    {
        int page = Convert.ToInt32(nowpage.Text);
       
            
        if (!IsPostBack)
        {
            Repeater1.DataSource = new CarData().SelectAll(num,page);
            Repeater1.DataBind();

            sumpage.Text = Maxpage().ToString();
            bt_first.Enabled = false;
            bt_up.Enabled = false;

            for (int i = 1; i <= Maxpage(); i++)
            {
                ListItem li = new ListItem(i.ToString(),i.ToString());
                Dr_page.Items.Add(li);
            }
        }
        bt_last.Click += bt_last_Click;
        bt_next.Click += bt_next_Click;
        bt_up.Click += bt_up_Click;
        bt_first.Click += bt_first_Click;
        bt_go.Click += bt_go_Click;
    }
    //跳转按钮
    void bt_go_Click(object sender, EventArgs e)
    {
        bt_first.Enabled = true;
        bt_up.Enabled = true;
        bt_next.Enabled = true;
        bt_last.Enabled = true;
        int a = Convert.ToInt32(Dr_page.SelectedValue);
        Repeater1.DataSource = new CarData().SelectAll(num, a);
        Repeater1.DataBind();
        //显示当前页数
        nowpage.Text = a.ToString();
        if (a == 1)
        {
            bt_first.Enabled = false;
            bt_up.Enabled = false;
        }
        if (a == Maxpage())
        {
            bt_next.Enabled = false;
            bt_last.Enabled = false;
        }
    }
    //首页按钮
    void bt_first_Click(object sender, EventArgs e)
    {
        bt_last.Enabled = true;
        bt_next.Enabled = true;
        Repeater1.DataSource = new CarData().SelectAll(num, 1);
        Repeater1.DataBind();
        //显示当前页数
        nowpage.Text ="1";
        bt_up.Enabled = false;
    }
    //上一页
    void bt_up_Click(object sender, EventArgs e)
    {
        //获取下一页查询页数
        int page = Convert.ToInt32(nowpage.Text);
        int uppage = page -1;
       
        //执行查询语句
        Repeater1.DataSource = new CarData().SelectAll(num, uppage);
        Repeater1.DataBind();
        //显示当前页数
        nowpage.Text = uppage.ToString();
        //上一页按钮不可用
        if (uppage == 1)
        {
            bt_first.Enabled = false;
            bt_up.Enabled = false;
        }
        bt_next.Enabled = true;
        bt_last.Enabled = true;
    }
    //下一页
    void bt_next_Click(object sender, EventArgs e)
    {
        //上一页按钮可用
        bt_first.Enabled = true;
        bt_up.Enabled = true;
        //获取下一页查询页数
        int page = Convert.ToInt32(nowpage.Text);
        int nextpage = page + 1;
        //下一页按钮不可用
        if (nextpage==Maxpage())
        {
            bt_last.Enabled = false;
            bt_next.Enabled = false;           
        }
        //执行查询语句
        Repeater1.DataSource = new CarData().SelectAll(num, nextpage);
        Repeater1.DataBind();
        //显示当前页数
        nowpage.Text = nextpage.ToString();       
        
    }
    //尾页
    void bt_last_Click(object sender, EventArgs e)
    {
        bt_first.Enabled = true;
        bt_up.Enabled = true;
        Repeater1.DataSource = new CarData().SelectAll(num, Maxpage());
        Repeater1.DataBind();
        //显示当前页数
        nowpage.Text = Maxpage().ToString();
        bt_next.Enabled = false;
        
    }
    //总页数方法
    public int Maxpage()
    {
        int end = 0;
        int item = new CarData().SelectCount();
        decimal a = Convert.ToDecimal(item) / num;
        end = Convert.ToInt32(Math.Ceiling(a));
        return end;
    }
}

分页.cs

<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">

        <table style="100%;background-color:blue;text-align:center;">
            <tr style="color:white;">
                <td>编号</td>
                <td>名称</td>
                <td>油耗</td>
                <td>马力</td>
                <td>排量</td>
                <td>价格</td>
            </tr>
            <asp:Repeater ID="Repeater1" runat="server">
                <ItemTemplate>
                    <tr style="background-color:white;">
                        <td><%#Eval("Ids") %></td>
                        <td><%#Eval("Name") %></td>
                        <td><%#Eval("Oil") %></td>
                        <td><%#Eval("Powers") %></td>
                        <td><%#Eval("Exhaust") %></td>
                        <td><%#Eval("Price") %></td>
                    </tr>
                </ItemTemplate>
            </asp:Repeater>
        </table>
        第[<asp:Label ID="nowpage" runat="server" Text="1"></asp:Label>]页&nbsp;&nbsp;
        共[<asp:Label ID="sumpage" runat="server" Text="1"></asp:Label>]页 &nbsp;&nbsp;
        <asp:Button ID="bt_first" runat="server" Text="首页" />
        <asp:Button ID="bt_up" runat="server" Text="上一页" />
        <asp:Button ID="bt_next" runat="server" Text="下一页" />
        <asp:Button ID="bt_last" runat="server" Text="尾页" />

        &nbsp;&nbsp;
        <asp:DropDownList ID="Dr_page" runat="server"></asp:DropDownList>
        <asp:Button ID="bt_go" runat="server" Text="跳转" />
    </form>
</body>
</html>

分页.aspx

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原文地址：https://www.cnblogs.com/hclyz/p/6898866.html