ASP.NET用户自定义分页控件
1、新建Web用户控件，命名为“wucPager.ascx”。
在.ascx中加入代码：
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="wucPager.ascx.cs" Inherits="Web.webcontrols.wucPager" %> <table width="100%" border="0" cellspacing="0" cellpadding="0" class="total"> <tr> <td align="left"> 共<span class="number"><asp:Literal ID="ltlRecordCount" runat="server" Text="0"></asp:Literal></span>记录 每页<span class="number"><asp:Literal ID="ltlPageSize" runat="server" Text="10"></asp:Literal></span>条 共<span class="number"><asp:Literal ID="ltlPageCount" runat="server"></asp:Literal></span>页 </td> </tr> </table> <table width="100%" border="0" cellspacing="0" cellpadding="0" class="page"> <tr> <td> </td> <td width="75"> <div class="buttons"> <asp:LinkButton ID="lbtnFirst" runat="server" CssClass="regular" OnCommand="ToggleCommon_Click" CommandArgument="first"> <img src="../images/page-first.png" alt="" />首页</asp:LinkButton> </div> </td> <td width="85"> <div class="buttons"> <asp:LinkButton ID="lbtnPrevious" runat="server" CssClass="regular" OnCommand="ToggleCommon_Click" CommandArgument="previous"><img src="../images/page-prev.png" alt="" />上一页</asp:LinkButton> </div> </td> <td width="85"> <div class="buttons"> <asp:LinkButton ID="lbtnNext" runat="server" CssClass="regular" OnCommand="ToggleCommon_Click" CommandArgument="next"><img src="../images/page-next.png" alt="" />下一页</asp:LinkButton> </div> </td> <td width="75"> <div class="buttons"> <asp:LinkButton ID="lbtnLast" runat="server" CssClass="regular" OnCommand="ToggleCommon_Click" CommandArgument="last"> <img src="../images/page-last.png" alt="" />末页</asp:LinkButton></div> </td> <td width="60"> 跳转到： </td> <td width="45"> <asp:TextBox ID="txtCurrentPage" runat="server" MaxLength="6" Width="34px"></asp:TextBox> </td> <td width="35"> <asp:ImageButton ID="ibtnGo" runat="server" ImageUrl="../images/go.gif" Width="14" Height="14" Enabled="false" CommandArgument="go" OnCommand="ToggleCommon_Click" /> </td> </tr> </table> <asp:RegularExpressionValidator ID="revCurrentPage" runat="server" ControlToValidate="txtCurrentPage" ValidationExpression="\d*" SetFocusOnError="true"></asp:RegularExpressionValidator> <asp:RangeValidator ID="rvCurrentPage" runat="server" ControlToValidate="txtCurrentPage" SetFocusOnError="true" Type="Integer"></asp:RangeValidator>
2、在.ascx.cs中加入代码：
using System; using System.Web.UI.WebControls; namespace Web.webcontrols { public partial class wucPager : System.Web.UI.UserControl { #region 分页属性 /// <summary> /// 记录总数 /// </summary> public int RecordCount { get { if (ViewState["RecordCount"] == null) { return 0; } return (int)ViewState["RecordCount"]; } set { ViewState["RecordCount"] = value; } } /// <summary> /// 一页显示的记录数 /// </summary> public int PageSize { get { if (ViewState["PageSize"] == null) { return 10; } return (int)ViewState["PageSize"]; } set { ViewState["PageSize"] = value; } } /// <summary> /// 页总数 /// </summary> public int PageCount { get { int pageIndex = RecordCount / PageSize; return (RecordCount % PageSize == 0 ? pageIndex : pageIndex + 1); } } /// <summary> /// 页索引 /// </summary> public int CurrentPageIndex { get { if (ViewState["CurrentPageIndex"] == null) { return 1; } return (int)ViewState["CurrentPageIndex"]; } set { ViewState["CurrentPageIndex"] = value; } } public event PageChangedEventHandler PageChanged; #endregion #region 页面加载 protected void Page_PreRender(object sender, EventArgs e) { LoadPageData(); } #endregion #region 加载分页信息 private void LoadPageData() { //一页显示的记录数 ltlPageSize.Text = PageSize.ToString(); //总页数 ltlPageCount.Text = PageCount.ToString(); //记录总数 ltlRecordCount.Text = RecordCount.ToString(); //记录数为0时，按钮全部禁用 if (ltlPageCount.Text == "0") { txtCurrentPage.Text = "0"; txtCurrentPage.Enabled = false; rvCurrentPage.MinimumValue = "0"; rvCurrentPage.MaximumValue = "0"; ibtnGo.Enabled = false; lbtnFirst.Enabled = false; lbtnPrevious.Enabled = false; lbtnNext.Enabled = false; lbtnLast.Enabled = false; } else { txtCurrentPage.Enabled = true; rvCurrentPage.MinimumValue = "1"; rvCurrentPage.MaximumValue = ltlPageCount.Text; ibtnGo.Enabled = true; lbtnFirst.Enabled = true; //如果当前页数大于总页数，当前页数等于总页数 if (CurrentPageIndex > PageCount) { CurrentPageIndex = PageCount; FirePageChanged(); return; } //设定上一页，下一页按钮启用状态 if (CurrentPageIndex == 1) { lbtnPrevious.Enabled = false; if (ltlPageCount.Text != "1") { lbtnNext.Enabled = true; } else { lbtnNext.Enabled = false; } } else if (CurrentPageIndex == PageCount) { lbtnPrevious.Enabled = true; lbtnNext.Enabled = false; } else { lbtnPrevious.Enabled = true; lbtnNext.Enabled = true; } lbtnLast.Enabled = true; txtCurrentPage.Text = CurrentPageIndex.ToString(); } } #endregion #region 共用按钮事件 protected void ToggleCommon_Click(object sender, CommandEventArgs e) { switch (e.CommandArgument.ToString()) { case "go": if (txtCurrentPage.Text == "") { txtCurrentPage.Text = "1"; } CurrentPageIndex = int.Parse(txtCurrentPage.Text); break; case "first": CurrentPageIndex = 1; break; case "previous": CurrentPageIndex -= 1; break; case "next": CurrentPageIndex += 1; break; case "last": CurrentPageIndex = PageCount; break; } FirePageChanged(); } private void FirePageChanged() { if (PageChanged != null) { PageChanged(this, EventArgs.Empty); } if (Session["PageBack"] != null) { string condition = Session["PageBack"].ToString(); Session["PageBack"] = string.Format("{0}\r{1}", condition.Substring(0, condition.LastIndexOf("\r")), CurrentPageIndex); } } #endregion #region 自定义分页事件 public delegate void PageChangedEventHandler(object sender, EventArgs args); #endregion } }
3、在.aspx中调用：
<wuc:Pager ID="Pager" runat="server" OnPageChanged="Pager_PageChanged" />
4、在.cs中数据绑定时为分页控件赋值：
protected void BindRptData() { AAAEntity model = new AAAEntity(); int recordCount = -1; DataSet ds = GetPaged(Pager.PageSize, Pager.CurrentPageIndex, ref recordCount, model); rpList.DataSource = ds; Pager.RecordCount = recordCount; rpList.DataBind(); }
5、在.cs中添加分页事件：
protected void Pager_PageChanged(object sender, EventArgs e) { BindRptData(); }
6、分页控件中用到的CSS样式：
.page { height: 34px; line-height: 34px; border-bottom: 1px solid #9DB3C5; border-right: 1px solid #9DB3C5; border-left: 1px solid #9DB3C5; font-size: 12px; color: #333; } .page tr { background: url(../images/title_bg2.jpg) top; } .total { border-bottom: 1px solid #9DB3C5; border-right: 1px solid #9DB3C5; border-left: 1px solid #9DB3C5; line-height: 38px; height: 38px; font-size: 12px; color: #434343; } .total td { padding-left: 5px; padding-right: 5px; } .number { font-size: 14px; color: #F30; font-weight: bold; text-decoration: underline; margin-left: 5px; margin-right: 5px; }
.buttons a, .buttons button { display: block; float: left; margin: 0 7px 0 0; background: url(../images/buttonbg.gif); border: 1px solid #c0c0c0; font-family: "Lucida Grande" , Tahoma, Arial, Verdana, sans-serif; font-size: 12px; line-height: 120%; text-decoration: none; color: #565656; cursor: pointer; padding: 5px 10px 6px 7px; /* Links */ } .buttons button { width: auto; overflow: visible; padding: 4px 10px 3px 7px; /* IE6 */ } .buttons button[type] { padding: 5px 10px 5px 7px; /* Firefox */ line-height: 17px; /* Safari */ } *:first-child + html button[type] { padding: 4px 10px 3px 7px; /* IE7 */ } .buttons button img, .buttons a img { margin: 0 3px -3px 0 !important; padding: 0; border: none; width: 16px; height: 16px; } /* STANDARD */ button:hover, .buttons a:hover { background: url(../images/buttonbg2.gif); border: 1px solid #c2e1ef; color: #336699; } .buttons a:active { background-color: #6299c5; border: 1px solid #6299c5; color: #fff; } /* REGULAR */ button.regular, .buttons a.regular { color: #313131; } .buttons a.regular:hover, button.regular:hover { background-color: #dff4ff; border: 1px solid #f8b551; color: #ec6941; } .buttons a.regular:active { background-color: #6299c5; border: 1px solid #00b7ee; color: #00b7ee; } button.big, buttons a.big { color: #FC0; } .buttons a.big:hover, button.big:hover { background-color: #dff4ff; border: 1px solid #f8b551; color: #ec6941; } .buttons a.regular:active { background-color: #6299c5; border: 1px solid #00b7ee; color: #00b7ee; }
