gridview分页

Posted 2023-04-08

我想实现这样一个效果
是自定义控件
prv12345next
点next时显示prv678910next，
谁能帮下忙，给一个范例程式啊

有自动的不用..
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="GvPageSet.ascx.cs" Inherits="Control_GvPageSet" %>
<div style="text-align:right; width:100%;background-color:#c6d7ef">
<table cellpadding="0" cellspacing="0">
<tr>
<td style="width: 200px; text-align: right">
<asp:Label ID="Label1" runat="server" Text="当前页:"></asp:Label><asp:Label ID="lblCurrentInfo"
runat="server">1</asp:Label>   <asp:Label ID="Label2" runat="server" Text="共"></asp:Label><asp:Label ID="lblCount"
runat="server">1</asp:Label><asp:Label ID="Label3" runat="server" Text="页"></asp:Label><asp:Label
ID="lblTotalNum" runat="server">5</asp:Label><asp:Label ID="Label5" runat="server" Text="条"></asp:Label>
   
</td>
<td style="width: 33px">
<asp:LinkButton ID="lbtnFirst" runat="server" OnClick="PageIndex_Changed">首页</asp:LinkButton></td>
<td style="width: 50px">
<asp:LinkButton ID="lbtnPrev" runat="server" OnClick="PageIndex_Changed">上一页</asp:LinkButton></td>
<td style="width: 50px">
<asp:LinkButton ID="lbtnNext" runat="server" OnClick="PageIndex_Changed">下一页</asp:LinkButton></td>
<td style="width: 33px">
<asp:LinkButton ID="lbtnLast" runat="server" OnClick="PageIndex_Changed">末页</asp:LinkButton></td>
</tr>
</table></div>
------------------
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.ComponentModel;
using System.Data.OleDb;

public partial class Control_GvPageSet : System.Web.UI.UserControl


#region Properties
[BrowsableAttribute(true)]
[DescriptionAttribute("要绑定数据的GridView.ID")]
[DefaultValueAttribute("")]
[CategoryAttribute("Appearance")]
public string gvID

get

return (ViewState["gvID"] == null) ? "" : ViewState["gvID"].ToString();

set

ViewState["gvID"] = value;



[BrowsableAttribute(true)]
[DescriptionAttribute("每一页显示的行数，默认每页10条")]
[DefaultValueAttribute("")]
[CategoryAttribute("Appearance")]
public int PageSize

get

return (ViewState["PageSize"] == null) ? 10 : Convert.ToInt32(ViewState["PageSize"]);

set

ViewState["PageSize"] = value;



[BrowsableAttribute(true)]
[DescriptionAttribute("要从中读取数据的DataTable.Name")]
[DefaultValueAttribute("")]
[CategoryAttribute("Data")]
public string TableName

get

return (ViewState["TableName"] == null) ? "" : ViewState["TableName"].ToString();

set

ViewState["TableName"] = value;



[BrowsableAttribute(true)]
[DescriptionAttribute("要从中读取数据的DataTable.Name")]
[DefaultValueAttribute("")]
[CategoryAttribute("Data")]
public string OrderBy

get

return (ViewState["OrderBy"] == null) ? "" : ViewState["OrderBy"].ToString();

set

ViewState["OrderBy"] = value;



[BrowsableAttribute(true)]
[DescriptionAttribute("读取数据的Sql语句，多表 联合查询")]
[DefaultValueAttribute("")]
[CategoryAttribute("Data")]
public string Sql

get

return (ViewState["Sql"] == null) ? "" : ViewState["Sql"].ToString();

set

ViewState["Sql"] = value;



[BrowsableAttribute(true)]
[DescriptionAttribute("过滤条件，可以为空")]
[DefaultValueAttribute("")]
[CategoryAttribute("Data")]
public string FilterString

get

return (ViewState["FilterString"] == null) ? "" : ViewState["FilterString"].ToString();

set

ViewState["FilterString"] = value;



[BrowsableAttribute(false)]
[DescriptionAttribute("当前页数")]
[DefaultValueAttribute("")]
public int CurrentInfo

get

return Convert.ToInt32(lblCurrentInfo.Text.Trim());


#endregion
OleDbConnection conn = new OleDbConnection(System.Configuration.ConfigurationManager.ConnectionStrings["Access"].ConnectionString);
OleDbCommand comm = new OleDbCommand();
string sql = "";

protected override void OnInit(EventArgs e)

this.Visible = false;


protected void Page_Load(object sender, EventArgs e)

if (!Page.IsPostBack)

//this.lbtnPrev.Enabled = false;
//this.lblCurrentInfo.Text = "1";



/// <summary>
/// 绑定GridView控件，供页面调用
/// </summary>
public void BindGridView()

GetPageNum();
//this.Visible = false;
this.lbtnPrev.Enabled = false;
this.lblCurrentInfo.Text = "1";
BindGV();


/// <summary>
/// 绑定GridView控件，供页面调用
/// </summary>
/// <param name="currentInfo">要显示的当前页</param>
public void BindGridView(int currentInfo)

GetPageNum();

//this.Visible = false;
this.lbtnPrev.Enabled = false;
this.lblCurrentInfo.Text = currentInfo.ToString();
BindGV();


/// <summary>
/// 获取结果总数目和总页数
/// </summary>
/// <returns>总页数</returns>
public int GetPageNum()

sql = "";
sql += "select count(*) from ( ";
sql += Sql;
sql += FilterString + ") as a " ;
comm.CommandText = sql;
comm.Connection = conn;
conn.Open();
int TotalNum = Convert.ToInt32(comm.ExecuteScalar());
conn.Close();
lblTotalNum.Text = TotalNum.ToString();
int pageNum = Convert.ToInt32(Math.Ceiling(Convert.ToDouble((double)TotalNum / PageSize)));
lblCount.Text = pageNum.ToString();

return TotalNum;


#region 按钮处理事件
/**/
/// <summary>
/// 按钮处理事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void PageIndex_Changed(object sender, EventArgs e)

LinkButton linkbtn = (LinkButton)sender;
switch (linkbtn.ID.Trim())

case "lbtnFirst":
this.lblCurrentInfo.Text = "1";

BindGV();

break;
case "lbtnPrev":

this.lblCurrentInfo.Text = (Convert.ToInt32(this.lblCurrentInfo.Text) - 1).ToString();

BindGV();

break;
case "lbtnNext":

this.lblCurrentInfo.Text = (Convert.ToInt32(this.lblCurrentInfo.Text) + 1).ToString();

BindGV();

break;
case "lbtnLast":
this.lblCurrentInfo.Text = this.lblCount.Text;

BindGV();

break;

SetBtnState();

private void SetBtnState()

if (Convert.ToInt32(this.lblCurrentInfo.Text) >= Convert.ToInt32(this.lblCount.Text) && Convert.ToInt32(this.lblCurrentInfo.Text) <= 1)

this.lbtnPrev.Enabled = false;
this.lbtnNext.Enabled = false;
this.lbtnFirst.Enabled = false;
this.lbtnLast.Enabled = false;

else if (Convert.ToInt32(this.lblCurrentInfo.Text) >= Convert.ToInt32(this.lblCount.Text))

this.lbtnPrev.Enabled = true;
this.lbtnNext.Enabled = false;
this.lbtnFirst.Enabled = true;
this.lbtnLast.Enabled = false;

else if (Convert.ToInt32(this.lblCurrentInfo.Text) <= 1)

this.lbtnPrev.Enabled = false;
this.lbtnNext.Enabled = true;
this.lbtnFirst.Enabled = false;
this.lbtnLast.Enabled = true;

else

this.lbtnPrev.Enabled = true;
this.lbtnNext.Enabled = true;
this.lbtnFirst.Enabled = true;
this.lbtnLast.Enabled = true;


#endregion

/// <summary>
/// 获取数据绑定GridView
/// </summary>
private void BindGV()

int lower, upper;
int currentPage = Convert.ToInt32(lblCurrentInfo.Text.Trim());
lower = (currentPage - 1) * PageSize;
upper = lower + PageSize;

DataTable dt = new DataTable();
sql = "";
sql += "select top " + PageSize.ToString() + " * from (" + Sql + FilterString + OrderBy + ") as a ";
if(lower > 0)
sql += " where ID not in (select top " + lower.ToString() + " ID from (" + Sql + FilterString + OrderBy + ") as b)";
comm.CommandText = sql;
comm.Connection = conn;
OleDbDataAdapter da = new OleDbDataAdapter(comm);
conn.Open();
da.Fill(dt);
conn.Close();

if (dt.Rows.Count == 0)

this.Visible = false;

else

this.Visible = true;

GridView gv = (GridView)Page.FindControl(gvID);
gv.DataSource = dt;
gv.DataBind();
SetBtnState();



【拿不拿分不要紧，希望某些人不要昧着良心来骗分
骗分是小，误导所有关心这问题的人是大
我不是为了分而来，但最后很多人愿意把分给我！
谢谢各位，让我成为上升最快达人！】 参考技术A <asp:datagrid PageSize="10" AllowPaging="true" PagerStyle-Mode="numericpages" ID="info" runat="server">
推荐你看看.net类库参考里的System.Web.UI.WebControls.DataGrid类的方法、属性和事件的说明

Gridview 分页 ASP.NET 与 Gridview 外部的分页器面板

【中文标题】Gridview 分页 ASP.NET 与 Gridview 外部的分页器面板

【英文标题】：Gridview Paging ASP.NET with Pager Panel outside Gridview

【发布时间】：2014-09-16 20:23:14

【问题描述】：

这是我第一次使用 ASP.NET 开发网站。

我想在具有分页功能的 GridView 中显示我的数据库中的数据，我可以使用 OnPageIndexChanging="GridView1_PageIndexChanging" 来实现它，但我想使用自己的寻呼机，所以问题是

“如何将我的寻呼机（图片中的右下角）链接到 gridview 而不是由 ASP.NET 生成的寻呼机”

图片：

这是我在 aspx 中的代码

<asp:UpdatePanel ID="UpdatePanel1" runat="server">
    <ContentTemplate>
    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" CssClass="table table-bordered table-condensed table-striped table-primary table-vertical-center"
        PageSize="3" AllowPaging="True"
        OnPageIndexChanging="GridView1_PageIndexChanging">
         <Columns>
              <asp:BoundField DataField="UNIT_ID" HeaderText="รหัส" SortExpression="unitid">
              <HeaderStyle CssClass="center" />
              <ItemStyle Width="10%" CssClass="center" />
              </asp:BoundField>
         </Columns>                                                                    
      </asp:GridView>
     </ContentTemplate>
</asp:UpdatePanel>

cs 中的代码

public partial class _Default : Page

        protected void Page_Load(object sender, EventArgs e)
        
            if (!IsPostBack)
                bindGridView();  
        

        protected void bindGridView() 
            string sqltxt = "select * from drug_units"; //where UNIT_ID =:unitid";
            CommandData comm = new CommandData();
            comm.SetCommandText(sqltxt);
            //comm.AddInputParameter("unitid", "5");
            List<DrugsUnit> dy = new List<DrugsUnit>();
            comm.ExecuteNonQuery();
            dy = comm.ExecuteToList<DrugsUnit>();
            GridView1.DataSource = dy;
            /*BoundField boundField = new BoundField();
            boundField.DataField = "UNIT_ID";
            boundField.HeaderText = "ID";
            boundField.SortExpression = "ID";
            boundField.HeaderStyle.CssClass = "center";
            boundField.ItemStyle.CssClass = "center";
            GridView1.Columns.Add(boundField);*/
            GridView1.DataBind();
            GridView1.HeaderRow.TableSection = TableRowSection.TableHeader;
        

        protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
        
            GridView1.PageIndex = e.NewPageIndex;
            bindGridView();
        
 

【问题讨论】：

您可以通过中继器使用外部寻呼机，请参阅[这篇文章][1] [1]：***.com/questions/9534463/gridview-external-paging

【参考方案1】：

protected void GridView_RowDataBound(object sender, GridViewRowEventArgs e)

    if (e.Row.RowType == DataControlRowType.Pager)
    
        upGridPager.Update();
        e.Row.SetRenderMethodDelegate(new RenderMethod((w, r) =>
        
            e.Row.SetRenderMethodDelegate(null);
            using (var ms = new StringWriter())
            using (var writer = new HtmlTextWriter(ms))
            
                e.Row.RenderControl(writer);
                GridPager.InnerHtml = "<table>" + ms.ToString() + "</table>";
            
        ));

aspx 可能看起来像这样（在您的网格之外）

<asp:UpdatePanel ID="upGridPager" runat="server" UpdateMode="Conditional">
   <ContentTemplate>
     <div runat="server" id="GridPager" />
   </ContentTemplate>
</asp:UpdatePanel>