简单实现C#CheckBox单选的相关功能

DataGrid中加入CheckBox,并实现c# CheckBox单选原理就是用js遍列所有CheckBox把所有CheckBox设为未被选中,然后在把单击的CheckBox设为选中。
以下是c# CheckBox单选的实现方法：
aspx文件：
 
 
 
  
  
  <%@ page language="c#" codebehind="webform1.aspx.cs" autoeventwireup="false" inherits="datagridcheck.webform1" %>  
  
  
  >  
  
  
    
  
  
    
  
  
  </strong>webform1<strong> title></strong>  </li>
  
  
  <li><strong><meta</strong> content="microsoft visual studio .net 7.1" name="generator"<strong>></strong>  </li>
  
  
  <li><strong><meta</strong> content="c#" name="code_language"<strong>></strong>  </li>
  
  
  <li><strong><meta</strong> content="javascript" name="vs_defaultclientscript"<strong>></strong>  </li>
  
  
  <li><strong><meta</strong> content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetschema"<strong>></strong>  </li>
  
  
  <li><strong><script</strong> language="javascript"<strong>></strong>  </li>
  
  
  <li>function setcheckboxstate()  </li>
  
  
  <li>{  </li>
  
  
  <li>var dom=document.all;  </li>
  
  
  <li>var el=event.srcelement;  </li>
  
  
  <li>if(el.tagname=="input"&&el.type.tolowercase()=="checkbox")  </li>
  
  
  <li>{  </li>
  
  
  <li>for(i=0;i<strong><dom.length</strong>;i++)  </li>
  
  
  <li>{  </li>
  
  
  <li>if(dom[i].tagname=="input"&&dom[i].type.tolowercase()=="checkbox")  </li>
  
  
  <li>{  </li>
  
  
  <li>dom[i].checked=false;  </li>
  
  
  <li>}  </li>
  
  
  <li>}  </li>
  
  
  <li>}  </li>
  
  
  <li>el.checked=!el.checked;  </li>
  
  
  <li>}  </li>
  
  
  <li><strong> script></strong>  </li>
  
  
  <li><strong> head></strong>  </li>
  
  
  <li><strong><body</strong> ms_positioning="gridlayout"<strong>></strong>  </li>
  
  
  <li><strong><form</strong> id="form1" method="post" runat="server"<strong>></strong>  </li>
  
  
  <li><strong><font</strong> face="宋体"<strong>></strong>  </li>
  
  
  <li><strong><asp:datagrid</strong> id="dg" style="z-index: 101; left: 168px; position: absolute; top: 40px" runat="server"  </li>
  
  
  <li>width="440px" autogeneratecolumns="false"<strong>></strong>  </li>
  
  
  <li><strong><columns></strong>  </li>
  
  
  <li><strong><asp:templatecolumn></strong>  </li>
  
  
  <li><strong><itemtemplate></strong>  </li>
  
  
  <li><strong><asp:checkbox</strong> id="chkexport" runat="server"<strong>> asp:checkbox></strong>  </li>
  
  
  <li><strong> itemtemplate></strong>  </li>
  
  
  <li><strong> asp:templatecolumn></strong>  </li>
  
  
  <li><strong><asp:boundcolumn</strong> datafield="integervalue"<strong>> asp:boundcolumn></strong>  </li>
  
  
  <li><strong><asp:boundcolumn</strong> datafield="stringvalue"<strong>> asp:boundcolumn></strong>  </li>
  
  
  <li><strong><asp:boundcolumn</strong> datafield="currencyvalue"<strong>> asp:boundcolumn></strong>  </li>
  
  
  <li><strong> columns></strong>  </li>
  
  
  <li><strong> asp:datagrid><asp:button</strong> id="button1" style="z-index: 102; left: 168px; position: absolute; top: 8px" runat="server"  </li>
  
  
  <li>text="显示内容"<strong>> asp:button> font> form></strong>  </li>
  
  
  <li><strong> body></strong>  </li>
  
  
  <li><strong> html></strong>  </li>
 
 
 </ol></pre><p>以下是cs文件</p><pre>
 
 
 <ol>
  
  
  <li>using system;  </li>
  
  
  <li>using system.collections;  </li>
  
  
  <li>using system.componentmodel;  </li>
  
  
  <li>using system.data;  </li>
  
  
  <li>using system.drawing;  </li>
  
  
  <li>using system.web;  </li>
  
  
  <li>using system.web.sessionstate;  </li>
  
  
  <li>using system.web.ui;  </li>
  
  
  <li>using system.web.ui.webcontrols;  </li>
  
  
  <li>using system.web.ui.htmlcontrols;  </li>
  
  
  <li>namespace datagridcheck  </li>
  
  
  <li>{  </li>
  
  
  <li>/// <strong><summary></strong>  </li>
  
  
  <li>/// webform1 的摘要说明。  </li>
  
  
  <li>/// <strong> summary></strong>  </li>
  
  
  <li>public class webform1 : system.web.ui.page  </li>
  
  
  <li>{  </li>
  
  
  <li>protected system.web.ui.webcontrols.button button1;  </li>
  
  
  <li>protected system.web.ui.webcontrols.datagrid dg;  </li>
  
  
  <li>private void page_load(object sender, system.eventargs e)  </li>
  
  
  <li>{  </li>
  
  
  <li>// 在此处放置用户代码以初始化页面  </li>
  
  
  <li>if (!page.ispostback)  </li>
  
  
  <li>{  </li>
  
  
  <li>dg.datasource= createdatasource() ;  </li>
  
  
  <li>dg.databind();  </li>
  
  
  <li>}  </li>
  
  
  <li>}  </li>
  
  
  <li>icollection createdatasource()  </li>
  
  
  <li>{  </li>
  
  
  <li>datatable dt = new datatable();  </li>
  
  
  <li>datarow dr;  </li>
  
  
  <li>dt.columns.add(new datacolumn("integervalue", typeof(int32)));  </li>
  
  
  <li>dt.columns.add(new datacolumn("stringvalue", typeof(string)));  </li>
  
  
  <li>dt.columns.add(new datacolumn("currencyvalue", typeof(double)));  </li>
  
  
  <li>for (int i = 0; i <strong><</strong> <strong>9</strong>; i++)  </li>
  
  
  <li>{  </li>
  
  
  <li>dr = dt.newrow();  </li>
  
  
  <li>dr[0] = i;  </li>
  
  
  <li>dr[1] = "item " + i.tostring();  </li>
  
  
  <li>dr[2] = 1.23 * (i + 1);  </li>
  
  
  <li>dt.rows.add(dr);  </li>
  
  
  <li>}  </li>
  
  
  <li>dataview dv = new dataview(dt);  </li>
  
  
  <li>return dv;  </li>
  
  
  <li>}  </li>
  
  
  <li>#region web 窗体设计器生成的代码  </li>
  
  
  <li>override protected void oninit(eventargs e)  </li>
  
  
  <li>{  </li>
  
  
  <li>//  </li>
  
  
  <li>// codegen: 该调用是 asp.net web 窗体设计器所必需的。  </li>
  
  
  <li>//  </li>
  
  
  <li>initializecomponent();  </li>
  
  
  <li>base.oninit(e);  </li>
  
  
  <li>}  </li>
  
  
  <li>/// <strong><summary></strong>  </li>
  
  
  <li>/// 设计器支持所需的方法 - 不要使用代码编辑器修改  </li>
  
  
  <li>/// 此方法的内容。  </li>
  
  
  <li>/// <strong> summary></strong>  </li>
  
  
  <li>private void initializecomponent()  </li>
  
  
  <li>{  </li>
  
  
  <li>this.dg.itemdatabound += new system.web.ui.webcontrols.datagriditemeventhandler(this.dg_itemdatabound);  </li>
  
  
  <li>this.button1.click += new system.eventhandler(this.button1_click);  </li>
  
  
  <li>this.load += new system.eventhandler(this.page_load);  </li>
  
  
  <li>}  </li>
  
  
  <li>#endregion  </li>
  
  
  <li>private void button1_click(object sender, system.eventargs e)  </li>
  
  
  <li>{  </li>
  
  
  <li>system.web.ui.webcontrols.checkbox chkexport;  </li>
  
  
  <li>foreach (datagriditem dgitem in dg.items)  </li>
  
  
  <li>{  </li>
  
  
  <li>chkexport=(checkbox)dgitem.findcontrol("chkexport");  </li>
  
  
  <li>if(chkexport.checked)  </li>
  
  
  <li>{  </li>
  
  
  <li>response.write("<strong><script></strong>alert("+dgitem.cells[2].text+"和"+dgitem.cells[3].text+")<strong> script></strong>");  </li>
  
  
  <li>}  </li>
  
  
  <li>}  </li>
  
  
  <li>}  </li>
  
  
  <li>private void dg_itemdatabound(object sender, system.web.ui.webcontrols.datagriditemeventargs e)  </li>
  
  
  <li>{  </li>
  
  
  <li>if(e.item.itemindex<strong><0</strong>) return;  </li>
  
  
  <li>if(e.item.itemtype == listitemtype.item || e.item.itemtype == listitemtype.alternatingitem)  </li>
  
  
  <li>{  </li>
  
  
  <li>system.web.ui.webcontrols.checkbox chkexport;  </li>
  
  
  <li>chkexport=(checkbox)e.item.findcontrol("chkexport");  </li>
  
  
  <li>chkexport.attributes.add("onclick","setcheckboxstate()");  </li>
  
  
  <li>e.item.attributes.add("onmouseover","currentcolor=this.style.backgroundcolor;this.style.backgroundcolor=48d1cc");  </li>
  
  
  <li>e.item.attributes.add("onmouseout","this.style.backgroundcolor=currentcolor"); </li>
  
  
  <li>}  </li>
  
  
  <li>}  </li>
  
  
  <li>}  </li>
  
  
  <li>}  </li>
 
 
 </ol></pre><p>以上就是笔者实现C# CheckBox单选事件的方法，希望能给大家带来帮助。</p>            <br>
            文章名称：简单实现C#CheckBox单选的相关功能            <br>
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