这是一个自带分页的继承Repeater的控件，支持url分页，支持回发分页。
先上效果。
设计时html代码：
<!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></title> </head> <body> <hxj:PageRepeater ID="PageRepeater1" PageSize="5" runat="server" EnableViewState="false" UrlPaging="true"> <HeaderTemplate> <table style="border-collapse: collapse" border="1" cellspacing="0" bordercolor="#000000" cellpadding="0" width="100%"> <thead> <tr> <th> 产品ID </th> <th> 产品名称 </th> <th> UnitPrice </th> <th> SupplierID </th> <th> ReorderLevel </th> </tr> </thead> <tbody> </HeaderTemplate> <ItemTemplate> <tr> <td> <%
# Eval("ProductID")
%></td>
<td>
<%
# Eval("ProductName")
%></td>
<td>
<%
# Eval("UnitPrice")
%></td>
<td>
<%
# Eval("SupplierID")
%></td>
<td>
<%
# Eval("ReorderLevel")
%></td>
</tr>
</ItemTemplate>
<FooterTemplate>
</tbody></table></FooterTemplate>
</hxj:PageRepeater>
</body>
</html>
设计时效果：
运行出来的效果如下：
生成的html也非常简洁：
<!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><title> </title><link href='/WebResource.axd?d=vyU7gXWTEjSzLLEcs_n47WXVuPaV-E2N-8HjlftGlnjKaeg4_XVFY_fcyrmwbmg50&t=634077057786582350' rel='stylesheet' type='text/css' /></head> <body> <table style="border-collapse: collapse" border="1" cellspacing="0" bordercolor="#000000" cellpadding="0" width="100%"> <thead> <tr> <th> 产品ID </th> <th> 产品名称 </th> <th> UnitPrice </th> <th> SupplierID </th> <th> ReorderLevel </th> </tr> </thead> <tbody> <tr> <td> 1 </td> <td> CarChai </td> <td> 150.8000 </td> <td> 1 </td> <td> 10 </td> </tr> <tr> <td> 2 </td> <td> Chang </td> <td> 17.0000 </td> <td> 1 </td> <td> 25 </td> </tr> <tr> <td> 3 </td> <td> Aniseed Syrup </td> <td> 10.0000 </td> <td> 1 </td> <td> 25 </td> </tr> <tr> <td> 4 </td> <td> Chef Anton's Cajun Seasoning </td> <td> 22.0000 </td> <td> 2 </td> <td> 0 </td> </tr> <tr> <td> 5 </td> <td> Chef Anton's Gumbo Mix </td> <td> 21.3500 </td> <td> 2 </td> <td> 0 </td> </tr> </tbody></table><div class="yellow" id="PageRepeater1div" style="text-align:right;"> 页码 1/17，每页5条，共81条 <a disabled="disabled"><<</a><a disabled="disabled"><</a><span style="font-weight:Bold;color:red;">1</span><a href="/aspnetpagerTest.aspx?page=2">2</a><a href="/aspnetpagerTest.aspx?page=3">3</a><a href="/aspnetpagerTest.aspx?page=4">4</a><a href="/aspnetpagerTest.aspx?page=5">5</a><a href="/aspnetpagerTest.aspx?page=6">6</a><a href="/aspnetpagerTest.aspx?page=7">7</a><a href="/aspnetpagerTest.aspx?page=8">8</a><a href="/aspnetpagerTest.aspx?page=9">9</a><a href="/aspnetpagerTest.aspx?page=10">10</a><a href="/aspnetpagerTest.aspx?page=11">...</a><a href="/aspnetpagerTest.aspx?page=2">></a><a href="/aspnetpagerTest.aspx?page=17">>></a> </div> </body> </html>
后台代码：
protected void Page_Load(object sender, EventArgs e) { PageRepeater1.FromSection = DbSession.Default.From<Products>().OrderBy(Products._.ProductID.Asc); PageRepeater1.DataBind(); }
代码也很简单，不过这里是使用url分页，才是这种写法，如果使用回发分页就不是这样写啦。当然使用需要配合Hxj.Data组件。
如何具体使用在下一节将详细讲述。
这里还是继续讲述控件的编写。
[DefaultEvent("PageChanged")] [ToolboxData("<{0}:PageRepeater runat=server></{0}:PageRepeater>")] public class PageRepeater : Repeater, IPostBackEventHandler, IPostBackDataHandler
为了方便直接继承与Repeater。
控件之所以能主动分页并且只取相应的页码数据，这里就是使用了Hxj.Data的分页。
private FromSection _fromSection; /// <summary> /// 如果是sql2000或者access数据库一定要设置排序字段 /// </summary> [Category("Behavior"), Browsable(false)] [Description("FromSection")] public FromSection FromSection { get { return _fromSection; } set { _fromSection = value; } }
这里设置需要的FromSection。
然后重写了DataBind方法，如下：
/// <summary> /// 重写DataBind /// </summary> public override void DataBind() { if (null != _fromSection) { this.RecordCount = _fromSection.Count(); this.DataSource = _fromSection.Page(PageSize, CurrentPageIndex).ToDataTable(); } base.DataBind(); }
看这里的就知道了，并不是一定要设置FromSection，只需要设置RecordCount 和 DataSource 也是可以达到分页的效果。
下面的代码就是如何实现分页代码的输出：
if (!string.IsNullOrEmpty(pager.PageCssClass)) { writer.AddAttribute(HtmlTextWriterAttribute.Class, PageCssClass); } else { writer.AddAttribute(HtmlTextWriterAttribute.Class, "pagedefault"); } if (!string.IsNullOrEmpty(PageStyle)) { writer.AddAttribute(HtmlTextWriterAttribute.Style, PageStyle); } writer.AddStyleAttribute(HtmlTextWriterStyle.TextAlign, PageAlign.ToString()); writer.AddAttribute(HtmlTextWriterAttribute.Id, UniqueID + "div"); writer.RenderBeginTag(HtmlTextWriterTag.Div); writer.Write(string.Concat("第", CurrentPageIndex.ToString(), "/", PageCount.ToString(), "页，每页", PageSize.ToString(), "条，共", RecordCount.ToString(), "条 ")); if (CurrentPageIndex > 1) { writer.AddAttribute(HtmlTextWriterAttribute.Href, getHrefstring(1)); writer.RenderBeginTag(HtmlTextWriterTag.A); } else { writer.AddAttribute(HtmlTextWriterAttribute.Class, "disabled"); writer.RenderBeginTag(HtmlTextWriterTag.Span); } writer.Write("<<"); writer.RenderEndTag(); if (CurrentPageIndex > 1) { writer.AddAttribute(HtmlTextWriterAttribute.Href, getHrefstring(CurrentPageIndex - 1)); writer.RenderBeginTag(HtmlTextWriterTag.A); } else { writer.AddAttribute(HtmlTextWriterAttribute.Class, "disabled"); writer.RenderBeginTag(HtmlTextWriterTag.Span); } writer.Write("<"); writer.RenderEndTag(); int totalIndex = PageCount / 10; int tempIndex = (CurrentPageIndex - 1) / 10; int startNumberIndex = tempIndex * 10 + 1; int endNumberIndex = startNumberIndex + 10; if (CurrentPageIndex > 10) { writer.AddAttribute(HtmlTextWriterAttribute.Href, getHrefstring(startNumberIndex - 1)); writer.RenderBeginTag(HtmlTextWriterTag.A); writer.Write("..."); writer.RenderEndTag(); } for (int i = startNumberIndex; i < endNumberIndex; i++) { if (i > PageCount) break; if (i == CurrentPageIndex) { writer.AddAttribute(HtmlTextWriterAttribute.Class, "current"); writer.RenderBeginTag(HtmlTextWriterTag.Span); } else { writer.AddAttribute(HtmlTextWriterAttribute.Href, getHrefstring(i)); writer.RenderBeginTag(HtmlTextWriterTag.A); } writer.Write(i.ToString()); writer.RenderEndTag(); } if (PageCount > 10 && tempIndex < totalIndex) { writer.AddAttribute(HtmlTextWriterAttribute.Href, getHrefstring(endNumberIndex)); writer.RenderBeginTag(HtmlTextWriterTag.A); writer.Write("..."); writer.RenderEndTag(); } if (CurrentPageIndex < PageCount) { writer.AddAttribute(HtmlTextWriterAttribute.Href, getHrefstring(CurrentPageIndex + 1)); writer.RenderBeginTag(HtmlTextWriterTag.A); } else { writer.AddAttribute(HtmlTextWriterAttribute.Class, "disabled"); writer.RenderBeginTag(HtmlTextWriterTag.Span); } writer.Write(">"); writer.RenderEndTag(); if (CurrentPageIndex < PageCount) { writer.AddAttribute(HtmlTextWriterAttribute.Href, getHrefstring(PageCount)); writer.RenderBeginTag(HtmlTextWriterTag.A); } else { writer.AddAttribute(HtmlTextWriterAttribute.Class, "disabled"); writer.RenderBeginTag(HtmlTextWriterTag.Span); } writer.Write(">>"); writer.RenderEndTag(); if (PageIndexBox == PageIndexBoxType.TextBox) { writer.AddAttribute(HtmlTextWriterAttribute.Id, UniqueID + "_input"); writer.AddAttribute(HtmlTextWriterAttribute.Name, UniqueID + "_input"); writer.AddAttribute("onkeydown", string.Concat("pr_keydown(event,'", UniqueID, "_btn');")); writer.AddAttribute(HtmlTextWriterAttribute.Type, "text"); writer.AddStyleAttribute(HtmlTextWriterStyle.Width, "30px"); writer.AddAttribute(HtmlTextWriterAttribute.Value, CurrentPageIndex.ToString()); writer.RenderBeginTag(HtmlTextWriterTag.Input); writer.RenderEndTag(); writer.AddAttribute(HtmlTextWriterAttribute.Id, UniqueID + "_btn"); writer.AddAttribute(HtmlTextWriterAttribute.Name, UniqueID + "_btn"); writer.AddAttribute(HtmlTextWriterAttribute.Type, "button"); writer.AddAttribute(HtmlTextWriterAttribute.Value, "Go"); if (UrlPaging) writer.AddAttribute(HtmlTextWriterAttribute.Onclick, string.Concat("if(pr_checkInput('", UniqueID, "_input',", PageCount.ToString(), ")){pr_goToPage('", UniqueID, "_input');}")); else writer.AddAttribute(HtmlTextWriterAttribute.Onclick, string.Concat("if(pr_checkInput('", UniqueID, "_input',", PageCount.ToString(), ")){", Page.ClientScript.GetPostBackClientHyperlink(control, ""), ";}")); writer.RenderBeginTag(HtmlTextWriterTag.Input); writer.RenderEndTag(); } else if (PageIndexBox == PageIndexBoxType.DropDownList) { writer.Write(" 转到第"); writer.AddAttribute(HtmlTextWriterAttribute.Id, UniqueID + "_input"); writer.AddAttribute(HtmlTextWriterAttribute.Name, UniqueID + "_input"); if (UrlPaging) writer.AddAttribute("onchange", string.Concat("pr_goToPage('", UniqueID, "_input')")); else writer.AddAttribute("onchange", Page.ClientScript.GetPostBackClientHyperlink(control, "")); writer.RenderBeginTag(HtmlTextWriterTag.Select); for (int i = 1; i <= PageCount; i++) { writer.AddAttribute(HtmlTextWriterAttribute.Value, i.ToString()); if (i == CurrentPageIndex) { writer.AddAttribute(HtmlTextWriterAttribute.Selected, "true"); } writer.RenderBeginTag(HtmlTextWriterTag.Option); writer.Write(i.ToString()); writer.RenderEndTag(); } writer.RenderEndTag(); writer.Write("页"); } writer.RenderEndTag();
好长的一段，看着都有一点晕，呵呵。
其他代码也就不贴啦，下一节将讲述如何使用该控件。
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