首页 > 学院 > 开发设计 > 正文

带图片的,多列的DropDownList的实现

2019-11-18 12:00:39
字体:
来源:转载
供稿:网友

  下面是模拟的DropDownList的效果,支持图片,多列,换行等。
  
  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=/uploadImages/2007-5-2/2007521075860821.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()).Con

发表评论 共有条评论
用户名: 密码:
验证码: 匿名发表