linq实现分页加组合查询
发布日期:2025-04-05 13:25:33 浏览次数:8 分类:精选文章

本文共 4429 字,大约阅读时间需要 14 分钟。

  前台aspx:

    
车名:
品牌:
价格:
=
>
<
编号 车名 品牌 时间 耗油量 功率 排气量 价格 图片
<%#Eval("code") %> <%#Eval("name") %> <%#Eval("brand") %> <%#Eval("time") %> <%#Eval("oil") %> <%#Eval("powers") %> <%#Eval("exhaust") %> <%#Eval("price") %> <%#Eval("pic") %>
当前第【
】页
最大页数【

后台cs:

public partial class _Default : System.Web.UI.Page{    int count = 5;    int page = 1;    int max = 0;    protected void Page_Load(object sender, EventArgs e)    {        if (!IsPostBack)        {            using (DatamydbDataContext con = new DatamydbDataContext())            {                Repeater1.DataSource = con.Car.Take(count);                Repeater1.DataBind();                Label1.Text = Convert.ToInt32(Math.Ceiling(con.Car.Count() * 1.0 / count)).ToString();            }                }        Button_prev.Click += Button_prev_Click;        Button_next.Click += Button_next_Click;        Button1.Click += Button1_Click;        Button_first.Click += Button_first_Click;        Button_last.Click += Button_last_Click;           }    void Button_last_Click(object sender, EventArgs e)    {        page = Convert.ToInt32(Label1.Text);        select();    }    void Button_first_Click(object sender, EventArgs e)    {        page = 1;        select();    }    void Button1_Click(object sender, EventArgs e)    {        page = 1;        select();            }    void Button_next_Click(object sender, EventArgs e)    {        page = Convert.ToInt32(Label1_now.Text) + 1;        select();    }    void Button_prev_Click(object sender, EventArgs e)    {        page = Convert.ToInt32(Label1_now.Text) - 1;        select();    }        public void select()    {        using (DatamydbDataContext con = new DatamydbDataContext())        {            IQueryable
clist = con.Car.AsQueryable(); if (TextBox1.Text.Trim().Length > 0) { clist = clist.Where(r=>r.Name.Contains(TextBox1.Text)); } if (TextBox2.Text.Trim().Length > 0) { clist = clist.Where(r=>r.Brand.Contains(TextBox2.Text)); } if (TextBox3.Text.Trim().Length > 0) { decimal price = Convert.ToDecimal(TextBox3.Text); string st = DropDownList1.SelectedValue; if (st == "=") { clist = clist.Where(r=>r.Price==price); } if (st == ">") { clist = clist.Where(r => r.Price > price); } if (st == "<") { clist = clist.Where(r => r.Price < price); } } if (page < 1) { page++; return; } if (page > Convert.ToInt32(Math.Ceiling(clist.Count() * 1.0 / count))) { page--; return; } Repeater1.DataSource = clist.Skip((page - 1) * count).Take(count); Repeater1.DataBind(); Label1_now.Text = page.ToString(); max = Convert.ToInt32(Math.Ceiling(clist.Count() * 1.0 / count)); Label1.Text = max.ToString(); } } }

 

转载于:https://www.cnblogs.com/wy1992/p/6873631.html

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