简单的ASP.NET无刷新分页

1、新建一个分页存储过程：

CREATE procedure [dbo].[P_Pager]
(@PageNumber int,
@PageSize int)
as
 declare @sql nvarchar(4000)
    set @sql = 'select top ' + Convert(varchar, @PageSize)   + ' * from T_Test where [type]=1 and id not in (select top ' + Convert(varchar, (@PageNumber - 1) * @PageSize)  + ' id from T_Test order by id desc) order by id desc'
 exec sp_executesql @sql
GO

　2、设置Ajax控件

想要实现无刷新，肯定会用到Ajax，首先是要放入必不可少的：

<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>

接着把Repeater控件嵌入到UpdatePanel里面去：

<asp:UpdatePanel ID="UpdatePanel1" runat="server">
           <ContentTemplate>
                   <ul>
                       <asp:Repeater ID="Repeater1" runat="server">
                           <ItemTemplate>
                               <li>
                                   <p>
                                       <span><%#Eval("username") %>：</span><%#Eval("content").ToString())) %></p>
                                   <p>
                                       <em>发表时间：
                                           <%#Eval("addtime") %>
                                       </em>
                                   </p>
                               </li>
                           </ItemTemplate>
                       </asp:Repeater>
                   </ul>
                   <p>
                           总记录：<asp:Literal ID="ltlCount" runat="server"></asp:Literal></p>
                       <p>
                           <webdiyer:AspNetPager ID="AspNetPager1" runat="server" AlwaysShow="true" PageIndexBoxType="DropDownList" >
                           </webdiyer:AspNetPager>
                       </p>
                   </div>
           </ContentTemplate>
       </asp:UpdatePanel>

3、AspNetPager分页控件

可以看到以上的代码有个分页控件，我相信这个分页控件大家都不陌生了，我就不多介绍。必须有AspNetPager.dll，然后在项目中引用，在头部引入这一段代码：

<%@ Register Assembly="AspNetPager" Namespace="Wuqi.Webdiyer" TagPrefix="webdiyer" %>

这时候分页控件应该就可以使用了。最后在后台绑定一下数据，同时也要绑定AspNetPager控件，完整的后台代码如下：

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using Wuqi.Webdiyer;
using System.Data.SqlClient;

public partial class AjaxPager : System.Web.UI.Page
{
    int currentPageNumber;//当前页号
    int pageSize = 5;//每页显示记录条数
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            currentPageNumber = 1;
            ViewState["currentPageNumber"] = currentPageNumber;
            BindData();
        }
        AspNetPager1.PageChanged += new EventHandler(AspNetPager1_PageChanged);  //定义控件分页事件
    }

    //获取记录总数
    private int GetCount()
    {
        string sql = "select COUNT(*) from T_Test";
        DataTable dt = GetTable(sql, CommandType.Text, values);
        if (dt.Rows.Count > 0)
        {
            return Convert.ToInt32(dt.Rows[0][0]);
        }
        else
        {
            return 0;
        }
    }

    //绑定数据
    private void BindData()
    {
        ltlCount.Text = GetCount().ToString();
        currentPageNumber = Convert.ToInt32(ViewState["currentPageNumber"]);
        SqlParameter[] values = { new SqlParameter("@PageNumber", currentPageNumber), new SqlParameter("@PageSize", pageSize) };

        DataTable dt = GetTable("P_Pager", CommandType.StoredProcedure, values);  //调用存储过程
        if (dt.Rows.Count > 0)
        {
            AspNetPager1.PageSize = pageSize;
            AspNetPager1.RecordCount = GetCount();
            AspNetPager1.CurrentPageIndex = currentPageNumber;
            this.Repeater1.DataSource = dt.DefaultView;
            this.Repeater1.DataBind();
        }
    }

    //分页事件
    void AspNetPager1_PageChanged(object sender, EventArgs e)
    {
        currentPageNumber = AspNetPager1.CurrentPageIndex;
        ViewState["currentPageNumber"] = currentPageNumber;
        BindData();
    }

     // 读取存储过程返回table
    private DataTable GetTable(string sql, CommandType t, params SqlParameter[] values)
    {
        using (SqlConnection conn = new SqlConnection("Data Source=127.0.0.1;Initial Catalog=testDB;Persist Security Info=True;User ID=sa;Password=123456"))
        {
            SqlCommand comm = new SqlCommand(sql, conn);
            comm.CommandType = t;
            if (values != null && values.Length > 0)
                comm.Parameters.AddRange(values);
            SqlDataAdapter da = new SqlDataAdapter(comm);
            DataSet ds = new DataSet();
            try
            {
                conn.Open();
                da.Fill(ds);
                return ds.Tables[0];
            }
            catch (Exception)
            {
                return null;
            }
            finally
            {
                conn.Close();
                conn.Dispose();
            }
        }
    }
}