ASP.NET存储过程自定义分页详解
1.首先我是用存储过程来解决的，要弄懂这个问题，首先要从存储过程下手，代码如下：
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CREATE proc getdataset |
其实代码也很简单，学编程的人基本上都是懂数据库的，这个存储过程估计不是问题。
其他的代码我都做了解释，有颜色的那段我没有解释，我在这里解释一下。其实也很简单，大家来看：
select top '+str((@intPageNo-1)*@intPageSize)+' '+@SelectOrderId+' from '+@TableName+' '+@SelectWhere +' '+@SelectOrder+'
这段代码的执行结果是什么了，是不是当前页前面的主键的集合啊，现在我们从所有的表中选出主键的值不在这个结果的之内的pagesize个记录不就是当前页的内容了吗？
2.aspx页面就不用再将了吧？我这里将代码写上：
| <%@ Page Language="C#" AutoEventWireup="true" CodeFile="aa.aspx.cs" Inherits="_Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>无标题页</title> </head> <body> <form id="form1" runat="server"> <div> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" Height="180px" Width="867px"> <Columns> <asp:BoundField DataField="job_id" HeaderText="job_id" /> <asp:BoundField DataField="job_desc" HeaderText="job_desc" /> <asp:BoundField DataField="max_lvl" HeaderText="max_lxl" /> </Columns> </asp:GridView> </div> <asp:HyperLink ID="hylfirst" runat="server">首页</asp:HyperLink> <asp:HyperLink ID="hylprev" runat="server">上一页</asp:HyperLink> <asp:HyperLink ID="hylnext" runat="server">下一页</asp:HyperLink> <asp:HyperLink ID="hylend" runat="server">尾页</asp:HyperLink> 第<asp:Label ID="lbRow" runat="server" Text="Label"></asp:Label>页， 共<asp:Label ID="lbpage" runat="server" Text="Label"></asp:Label>页，共<asp:Label ID="lbRecord" runat="server" Text="Label"></asp:Label>条记录，转到<asp:TextBox ID="txtlink" runat="server" Width="29px"></asp:TextBox> 页<asp:LinkButton ID="link" runat="server" OnClick="link_Click" TabIndex="1">转到</asp:LinkButton> </form> </body> </html> |
3.cs页面其实也每页什么好讲的，也就是一些常用的代码罢了……我把代码加上，大家看看，要是有疑问的可以回复我再解释：
| using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { this.bind(); } protected void link_Click(object sender, EventArgs e) { int page = Convert.ToInt32(txtlink.Text); Response.Redirect("aa.aspx?CurrentPage="+page+""); } public void bind() { int sumPage; int pageNo = 1; int pageSize = 3; if (Request.QueryString["CurrentPage"] == null) { pageNo = 1; } else { pageNo = Int32.Parse(Request.QueryString["CurrentPage"]); } SqlConnection conn = new SqlConnection(ConfigurationManager.AppSettings["ConStr"]); SqlDataAdapter da = new SqlDataAdapter(); da.SelectCommand = new SqlCommand(); da.SelectCommand.Connection = conn; da.SelectCommand.CommandText = "getdataset"; da.SelectCommand.CommandType = CommandType.StoredProcedure; da.SelectCommand.Parameters.Add("@TableList", SqlDbType.VarChar, 200).Value = "job_id,job_desc,max_lvl"; da.SelectCommand.Parameters.Add("@TableName", SqlDbType.VarChar, 30).Value = "jobs"; //da.SelectCommand.Parameters.Add("@SelectWhere", SqlDbType.VarChar, 500).Value = "where d=1"; da.SelectCommand.Parameters.Add("@SelectOrderId", SqlDbType.VarChar, 20).Value = "job_id"; da.SelectCommand.Parameters.Add("@SelectOrder", SqlDbType.VarChar, 200).Value = "order by min_lvl asc"; da.SelectCommand.Parameters.Add("@intPageNo", SqlDbType.Int).Value = pageNo; da.SelectCommand.Parameters.Add("@intPageSize", SqlDbType.Int).Value = pageSize; da.SelectCommand.Parameters.Add("@RecordCount", SqlDbType.Int).Direction = ParameterDirection.Output; da.SelectCommand.Parameters.Add("RowCount", SqlDbType.Int).Direction = ParameterDirection.ReturnValue; DataSet ds = new DataSet(); da.Fill(ds, "jobs"); GridView1.DataSource = ds; GridView1.DataBind(); Int32 RecordCount = (Int32)da.SelectCommand.Parameters["@RecordCount"].Value; //求出总记录数，该值是output出来的值 Int32 RowCount = (Int32)da.SelectCommand.Parameters["RowCount"].Value; //求出当前页中的记录数，在最后一页不等于pagesize， lbRecord.Text = RecordCount.ToString(); lbRow.Text = pageNo.ToString(); sumPage = (Int32)RecordCount / pageSize; if (RecordCount % pageSize > 0) { sumPage = sumPage + 1; } lbpage.Text = sumPage.ToString(); if (pageNo > 1) { hylfirst.NavigateUrl = "aa.aspx?CurrentPage=1"; hylprev.NavigateUrl = string.Concat("aa.aspx?CurrentPage=", "", pageNo - 1); } else { hylprev.NavigateUrl = ""; hylfirst.NavigateUrl = ""; hylfirst.Visible = false; hylprev.Visible = false; } if (pageNo < sumPage) { hylend.NavigateUrl = string.Concat("aa.aspx?CurrentPage=", "", sumPage); hylnext.NavigateUrl = string.Concat("aa.aspx?CurrentPage=", "", pageNo + 1); } else { hylnext.NavigateUrl = ""; hylend.NavigateUrl = ""; hylend.Visible = false; hylnext.Visible = false; } } } |
