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公告

下面是模仿的DropDownList的效果,支持图片,多列,换行等。查看例子

WebDropDownList.aspx

<%@ Page language="c#" Codebehind="WebDropDownList.aspx.cs"validateRequest="false" AutoEventWireup="false" Inherits="eMeng.WebDropDownList" %> <html> <head> <title>模拟下拉列表框</title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <style>BODY { FONT: 12px 宋体 } TD { FONT: 12px 宋体 } DIV { FONT: 12px 宋体 } LABEL { PADDING-RIGHT: 0px; PADDING-LEFT: 4px; PADDING-BOTTOM: 0px; PADDING-TOP: 3px; HEIGHT: 19px } .link_box { CURSOR: default; TEXT-ALIGN: left } .link_head { BORDER-RIGHT: 2px inset; BORDER-TOP: 2px inset; BORDER-LEFT: 2px inset; WIDTH: 100%; BORDER-BOTTOM: 2px inset; HEIGHT: 23px } .link_text { PADDING-LEFT: 2px; BACKGROUND: #fff } .link_arrow0 { BORDER-RIGHT: 2px outset; BORDER-TOP: 2px outset; BACKGROUND: buttonface; FONT: 14px marlett; BORDER-LEFT: 2px outset; WIDTH: 22px; BORDER-BOTTOM: 2px outset; HEIGHT: 100%; TEXT-ALIGN: center } .link_arrow1 { BORDER-RIGHT: buttonshadow 1px solid; PADDING-RIGHT: 0px; BORDER-TOP: buttonshadow 1px solid; PADDING-LEFT: 2px; BACKGROUND: buttonface; PADDING-BOTTOM: 0px; FONT: 14px marlett; BORDER-LEFT: buttonshadow 1px solid; WIDTH: 22px; PADDING-TOP: 2px; BORDER-BOTTOM: buttonshadow 1px solid; HEIGHT: 100%; TEXT-ALIGN: center } .link_value { BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; FILTER: alpha(opacity:0); VISIBILITY: hidden; OVERFLOW-X: hidden; OVERFLOW: auto; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid; POSITION: absolute } .link_record0 { BORDER-TOP: #eee 1px solid; PADDING-LEFT: 2px; BACKGROUND: #fff; WIDTH: 100%; COLOR: #000; HEIGHT: 20px } .link_record1 { BORDER-TOP: #047 1px solid; PADDING-LEFT: 2px; BACKGROUND: #058; WIDTH: 100%; COLOR: #fe0; HEIGHT: 20px } </style> <script> var dropShow=false var currentID function dropdown(el){ if(dropShow){ dropFadeOut() }else{ currentID=el el.style.visibility="visible" dropFadeIn() } } function dropFadeIn(){//选单淡入的效果 if(currentID.filters.alpha.opacity<100){ currentID.filters.alpha.opacity+=20 fadeTimer=setTimeout("dropFadeIn()",50) }else{ dropShow=true clearTimeout(fadeTimer) } } function dropFadeOut(){//选单淡出的效果 if(currentID.filters.alpha.opacity>0){ clearTimeout(fadeTimer) currentID.filters.alpha.opacity-=20 fadeTimer=setTimeout("dropFadeOut()",50) }else{ dropShow=false currentID.style.visibility="hidden" } } function dropdownHide(){ if(dropShow){ dropFadeOut() dropShow=false } } function hiLight(el){//高亮度显示指标位置 if(dropShow){ for(i=0;i<el.parentelement.childnodes.length;i++){ el.parentElement.childNodes(i).className="link_record0" } el.className="link_record1" } } function CheckMe(el){//替换显示内容 document.all.text1.innerText=el.innerText } document.onclick=dropdownHide </script> </head> <body text="#000000" onload="document.all.form1.reset()"> <div style="padding:10px;border-bottom:2px solid red">模拟下拉框</div> <form id="form1" onsubmit="alert(city.value)" runat="server"> <table> <tr> <td> <div class="link_box" onselectstart="return false" style="WIDTH: 100px"> <div class="link_head" onclick="dropdown(value1)"> <table height="100%" cellSpacing="0" cellPadding="0" width="100%" border="0"> <tr> <td> <div class="link_text"><nobr><label id="text1">请选择?</label></nobr></div> </td> <td align="right" width="22"> <div onmouseup="this.className='link_arrow0'" class="link_arrow0" onmousedown="this.className='link_arrow1'" onmouseout="this.className='link_arrow0'">6</div> </td> </tr> </table> </div> <div class="link_value" id="value1" style="WIDTH: 500px; HEIGHT: 300px"> <asp:datagrid id="DataGrid1" runat="server" AutoGenerateColumns="False" Font-Size="12px" Width="100%" ShowHeader="False"> <columns> <asp:boundcolumn DataField="Title" SortExpression="Title" DataFormatString="<img src='http://dotnet.aspx.cc/Images/meng.gif' align='absmiddle'> {0}"> </asp:boundcolumn> <asp:boundcolumn DataField="CreateDate" SortExpression="CreateDate" HeaderText="" DataFormatString="{0:yyyy年MM月dd日}"></asp:boundcolumn> </columns> </asp:datagrid> <div id="mx"> <div class="link_record0" onmouseover="hiLight(this)" onclick="CheckMe(this);document.all.form1.city.value=this.innerText"><label>北京市</label></div> <div class="link_record0" onmouseover="hiLight(this)" onclick="CheckMe(this);document.all.form1.city.value=this.innerText"><label>上海市</label></div> <div class="link_record0" onmouseover="hiLight(this)" onclick="CheckMe(this);document.all.form1.city.value=this.innerText"><label>河南省</label></div> <div class="link_record0" onmouseover="hiLight(this)" onclick="CheckMe(this);document.all.form1.city.value=this.innerText"><label>深圳市</label></div> <div class="link_record0" onmouseover="hiLight(this)" onclick="CheckMe(this);document.all.form1.city.value=this.innerText"><label>大连市</label></div> <div class="link_record0" onmouseover="hiLight(this)" onclick="CheckMe(this);document.all.form1.city.value=this.innerText"><label>云南省</label></div> </div> </div> </div> </td> <td><input type="hidden" value="您尚未选择" name="city"> <input type="submit" value="确定"> </td> </tr> </table> </form> </body> </html>

WebDropDownList.aspx.cs

using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; using System.Data.OleDb; namespace eMeng { /// <summary> /// ShowList 的摘要说明。 /// </summary> public class WebDropDownList : System.Web.UI.Page { protected System.Web.UI.WebControls.DataGrid DataGrid1; private void Page_Load(object sender, System.EventArgs e) { DataGrid1.Columns[0].ItemStyle.Width = Unit.Pixel(400); DataGrid1.Columns[1].ItemStyle.Width = Unit.Pixel(100); Data_Bind(); } public void Data_Bind() { Response.CacheControl = "no-cache"; Response.Expires = -1; try { string strSQL = "SELECT id,objectGuid,Title,CreateDate,HitCount FROM Document ORDER BY id DESC"; string cnString = (new Connection()).ConnectionString; OleDbConnection cn = new OleDbConnection(cnString); cn.Open(); OleDbCommand cmd = new OleDbCommand(strSQL, cn); DataGrid1.DataSource = cmd.ExecuteReader(CommandBehavior.CloseConnection); DataGrid1.DataBind(); cn.Close(); cn.Dispose(); cn = null; cmd.Dispose(); cmd = null; } catch(OleDbException myOleDbException) { Response.Write("错误:" + myOleDbException.Message + ":" + myOleDbException.HelpLink); Response.End(); } } private void DataGrid1_ItemDataBound(object sender,System.Web.UI.WebControls.DataGridItemEventArgs e) { if( e.Item.ItemIndex != -1 ) { e.Item.Attributes.Add("onmouseover", "this.bgColor='#C1D2EE'"); e.Item.Attributes.Add("onclick", "document.all.text1.innerText=this.cells[0].innerText;document.all.form1.city.value=this.cells[0].innerText;"); if (e.Item.ItemIndex % 2 == 0 ) { e.Item.Attributes.Add("bgcolor", "#FFFFFF"); e.Item.Attributes.Add("onmouseout", "this.bgColor=document.getElementById('DataGrid1').getAttribute('singleValue')"); } else { e.Item.Attributes.Add("bgcolor", "oldlace"); e.Item.Attributes.Add("onmouseout", "this.bgColor=document.getElementById('DataGrid1').getAttribute('oldValue')"); } } else { DataGrid1.Attributes.Add("oldValue", "oldlace"); DataGrid1.Attributes.Add("singleValue", "#FFFFFF"); } } #region Web Form Designer generated code override protected void OnInit(EventArgs e) { // // CODEGEN:该调用是 ASP.NET Web 窗体设计器所必需的。 // InitializeComponent(); base.OnInit(e); } /// <summary> /// 设计器支持所需的方法 - 不要使用代码编辑器修改 /// 此方法的内容。 /// </summary> private void InitializeComponent() { this.DataGrid1.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemDataBound); this.Load += new System.EventHandler(this.Page_Load); } #endregion } }
posted on 2006-10-09 15:16 绯村剑心 阅读(...) 评论(...) 编辑 收藏