Web 分页

以Car表为例分页

页面以table展示数据分页 页面代码

  <asp:Repeater ID="Repeater1" runat="server">
               <HeaderTemplate>
                   <table style="background-color:navy;text-align:center;width:80%;">
                       <thead>
                           <tr style="color:white;">
                               <td>编号</td>
                               <td>名称</td>
                               <td>铭牌</td>
                               <td>日期</td>
                              <td>油耗</td>
                              <td>动力</td>
                              <td>轴距</td>
                              <td>价格</td>
                          </tr>
                      </thead>
                      <tbody>
              </HeaderTemplate>
              <ItemTemplate>
                  <tr style="background-color:white;">
                      <td><%#Eval("Code") %></td>
                      <td><%#Eval("Name") %></td>
                      <td><%#Eval("Brand") %></td>
                      <td><%#Eval("Time") %></td>
                      <td><%#Eval("Oil") %></td>
                      <td><%#Eval("Powers") %></td>
                      <td><%#Eval("Exhaust") %></td>
                      <td><%#Eval("Price") %></td>
                  </tr>

              </ItemTemplate>
              <FooterTemplate>
                          </tbody>
                  </table>
              </FooterTemplate>
          </asp:Repeater>

          当前第【<asp:Label ID="Label_now" runat="server" Text="Label"></asp:Label>】页&nbsp &nbsp
          共【<asp:Label ID="Label_max" runat="server" Text="Label"></asp:Label>】页 &nbsp &nbsp
          <asp:LinkButton ID="LinkButton_frist" runat="server">首页</asp:LinkButton>&nbsp &nbsp
          <asp:LinkButton ID="LinkButton_prve" runat="server">上一页</asp:LinkButton>&nbsp &nbsp
          <asp:LinkButton ID="LinkButton_next" runat="server">下一页</asp:LinkButton>&nbsp &nbsp
          <asp:LinkButton ID="LinkButton_last" runat="server">尾页</asp:LinkButton>&nbsp &nbsp
          跳转到<asp:DropDownList ID="DropDownList_jump" AutoPostBack="true" runat="server"></asp:DropDownList>

页面显示

分页关键：每页显示多少条数据 显示的是第几页数据，数据访问类分页查询方法

   public List<Car> Select(int pagecount,int pagenumber)
     {
         List<Car> clist = new List<Car>();
         cmd.CommandText = " select top " + pagecount + "* from Car where Code not in(select top " + (pagecount * (pagenumber - )) + " Code from Car);";
         conn.Open();
         SqlDataReader dr = cmd.ExecuteReader();
         if (dr.HasRows)
         {
             while (dr.Read())
             {
                 Car c = new Car();
                 c.Code = dr[].ToString();
                 c.Name = dr[].ToString();
                 c.Brand = dr[].ToString();
                 c.Time = Convert.ToDateTime(dr[]);
                 c.Oil = Convert.ToDecimal(dr[]);
                 c.Powers = Convert.ToInt32(dr[]);
                 c.Exhaust = Convert.ToInt32(dr[]);
                 c.Price = Convert.ToDecimal(dr[]);
                 clist.Add(c);
             }
         }
         conn.Close();
         return clist;
     }

后台代码

 int pagecount = ;//每页显示的数据条数
     protected void Page_Load(object sender, EventArgs e)
     {
         if (!IsPostBack)//加载页面展示数据
         {
             Repeater1.DataSource = new CarData().Select(pagecount,);
             Repeater1.DataBind();
             Label_now.Text = "";
             Label_max.Text = Maxpage().ToString();
             for (int i = ; i <= Maxpage(); i++)//跳转下拉列表添加数据
             {
                 DropDownList_jump.Items.Add(new ListItem(i.ToString(), i.ToString()));
             }

         }
         LinkButton_frist.Click += LinkButton_frist_Click;//首页
         LinkButton_prve.Click += LinkButton_prve_Click;//上一页
         LinkButton_next.Click += LinkButton_next_Click;//下一页
         LinkButton_last.Click += LinkButton_last_Click;//尾页
         DropDownList_jump.SelectedIndexChanged += DropDownList_jump_SelectedIndexChanged;//跳转页面

     }
 void LinkButton_frist_Click(object sender, EventArgs e)//首页
     {
         //数据绑定上去
         Repeater1.DataSource = new CarData().Select(pagecount, );
         Repeater1.DataBind();
         //当前页数改变
         Label_now.Text = "";
         LinkButton_next.Enabled = true;
         LinkButton_prve.Enabled = false;
     }
  　　public int Maxpage()//最大页数
     {
         List<Car> clist = new CarData().Select();
         return Convert.ToInt32(Math.Ceiling(clist.Count / (pagecount * 1.0)));
     }

     void LinkButton_prve_Click(object sender, EventArgs e)//上一页
     {
         // 显示第几页
         int pagenumber = Convert.ToInt32(Label_now.Text) -;
         //数据绑定上去
         Repeater1.DataSource = new CarData().Select(pagecount, pagenumber);
         Repeater1.DataBind();
         //当前页数改变
         Label_now.Text = pagenumber.ToString();
         // 设置上下页按钮时候可用
         if (pagenumber <= )
         {
             LinkButton_prve.Enabled = false;
         }
         LinkButton_next.Enabled = true;
     }

     void LinkButton_next_Click(object sender, EventArgs e)//下一页
     {
         // 显示第几页
         int pagenumber = Convert.ToInt32(Label_now.Text) + ;
         //数据绑定上去
         Repeater1.DataSource = new CarData().Select(pagecount, pagenumber);
         Repeater1.DataBind();
        //当前页数改变
         Label_now.Text = pagenumber.ToString();
             // 设置上下页按钮时候可用
         if (pagenumber >= Maxpage())
         {
             LinkButton_prve.Enabled = true;
         }
         LinkButton_next.Enabled = false;
     }

     void LinkButton_last_Click(object sender, EventArgs e)//尾页
     {
         //数据绑定上去
         Repeater1.DataSource = new CarData().Select(pagecount, Maxpage());
         Repeater1.DataBind();
         //当前页数改变
         Label_now.Text = Maxpage().ToString();
         //按钮改变
         LinkButton_next.Enabled = false;
         LinkButton_prve.Enabled = true;
     }

 void DropDownList_jump_SelectedIndexChanged(object sender, EventArgs e)//跳转页面
     {
         //绑定数据
         Repeater1.DataSource = new CarData().Select(pagecount, Convert.ToInt32(DropDownList_jump.SelectedValue));
         Repeater1.DataBind();
         //显示当前 为第几页
         Label_now.Text = DropDownList_jump.SelectedValue;
         // 判断页数设置上下页按钮样式
         if (Convert.ToInt32(DropDownList_jump.SelectedValue) >= Maxpage())// 大于最大页数
         {
             LinkButton_next.Enabled = false;
             LinkButton_prve.Enabled = true;
         }
         else if (Convert.ToInt32(DropDownList_jump.SelectedValue) <= )//小于最小页数
         {
             LinkButton_next.Enabled = true;
             LinkButton_prve.Enabled = false;
         }
         else
         {
             LinkButton_next.Enabled = true;
             LinkButton_prve.Enabled = true;
         }
     }