在GridView中加入单选按钮RadioButton

首先鄙视下dudu:不管你是什么文章,如果你加上一句:恳请dudu能够让我在首页挂一天,那么这文章就不会被dudu撤下来的,但是如果你没加,那不好意思,dudu的大刀就会向你举起!这是典型的顺风耳!

这段时间一直为网站的事醉心于代码,除了每天早晨给出交易信号外,基本上没有关注过行情了.但代码仅是我的爱好而已,操盘才是我的正业,趁现在心思还没有完全转到操盘上面来,把这个项目我整理的一些代码记下来,有点意义的就是如何给GridView加入单选按钮了.
在网上查阅了一些文章,无非就是:
1,放一个html单选控件:<input type="radio"...
2,放一个RadioButtonList;

这两种方法都有弊端;第一种如果我们要在后台取radiobutton的值就显得很麻烦,第二种会让我们不好布局,但是大家知道,如果仅仅是在GridView里面加入RadioButton,我们就实现不了单选,后面查阅了一老外的文章,找到了一种自认为比较好的方法,实现思路是:在后台给radiobutton加入个onclick属性,在前台当用户单击这个单选按钮的时候用js去遍历,取消其他单选的选择,下面是配合一个投票系统的代码,这个投票系统能够在后台自动生成是单选还是复选按钮,最后面的是一个实例.demo请见: http://www.yinuof.com/topiccontent.aspx?id=135&class=5

 1 < asp:Panel ID = " literalVote "  runat = " server "  Visible = " false " >  
 2                   < asp:GridView ID = " gridVote "  runat = " server "  AutoGenerateColumns = " False "  BackColor = " #B6C9E7 "  CssClass = " tableBack "  CellPadding = " 3 "  CellSpacing = " 1 "  ShowHeader = " False "  Width = " 100% "  DataKeyNames = " this_id,vote_type,this_title "  OnRowDataBound = " gridVote_RowDataBound " >  
 3                       < Columns >  
 4                           < asp:TemplateField >  
 5                              < ItemTemplate >  
 6                                 < asp:PlaceHolder ID = " placeVote "  runat = " server "   />  
 7                              </ ItemTemplate >  
 8                               < ItemStyle BackColor = " White "   />  
 9                           </ asp:TemplateField >  
10                           < asp:TemplateField >  
11                              < ItemTemplate >  
12                                 < asp:Image ID = " voteImage "  Runat = " server "  Height = " 8px "  Width = ' <%# FormatImage(Convert.ToInt32(Eval("vote_num").ToString())) %> '  ImageUrl = " img/bar2.gif " ></ asp:Image ><% #Eval( " vote_num " )  %>  
13                              </ ItemTemplate >  
14                               < ItemStyle Width = " 50% "  BackColor = " White "   />  
15                           </ asp:TemplateField >  
16                       </ Columns >  
17                   </ asp:GridView >  
18                   < div style = " margin-top:5px;font-size:12px;color:#000000; " >  
19                      < asp:Button UseSubmitBehavior = " false "  Text = " 我要投票 "  ID = " buttonVote "  runat = " server "  OnClick = " buttonVote_Click "   />& nbsp;【截至时间: < asp:Literal ID = " literalTimeout "  runat = " server "   />& nbsp; |& nbsp; < a href = ' voteuser.aspx?id=<%=Request.QueryString["id"] %> '   class = " aTitle "  target = " _blank " > 查看投票用户 </ a > 】 
20                   </ div >  
21               </ asp:Panel >

js代码:

 1 < script language = " javascript " >             function SetUniqueRadioButton(nameregex, current) 
 2              { 
 3               re = new RegExp(nameregex); 
 4               for(i = 0; i < document.forms[0].elements.length; i++) 
 5               { 
 6                  elm = document.forms[0].elements[i] 
 7                  if (elm.type == 'radio') 
 8                  { 
 9                     if (re.test(elm.name)) 
10                     { 
11                        elm.checked = false; 
12                     } 
13                  } 
14               } 
15               current.checked = true; 
16            }  
17           </ script >

后台代码:

protected   void  gridVote_RowDataBound( object  sender, GridViewRowEventArgs e) 
     { 
        PlaceHolder place = (PlaceHolder)e.Row.FindControl("placeVote"); 
        if (place != null) 
        { 
            if (gridVote.DataKeys[e.Row.RowIndex].Values["vote_type"].ToString().ToLower() == "false") 
            {  
               //单选 
                RadioButton radioVote = new RadioButton(); 
                radioVote.ID = "radioVote"; 
                string script = "SetUniqueRadioButton('gridVote.*Vote',this)"; 
                radioVote.Attributes.Add("onclick",script); 
                //绑定数据 
                //BindItemData(radioVote, Int32.Parse(gridVote.DataKeys[e.Row.RowIndex].Values["this_id"].ToString())); 
                radioVote.Text = gridVote.DataKeys[e.Row.RowIndex].Values["this_title"].ToString(); 
                place.Controls.Add(radioVote); 
                
            } 
            if (gridVote.DataKeys[e.Row.RowIndex].Values["vote_type"].ToString().ToLower() == "true") 
            { 
               //多选 
                CheckBox checkVote = new CheckBox(); 
                checkVote.ID = "checkVote"; 
                checkVote.Text = gridVote.DataKeys[e.Row.RowIndex].Values["this_title"].ToString(); 
                place.Controls.Add(checkVote); 
            } 
        } 
    }

转载于:https://www.cnblogs.com/pwqzc/archive/2007/07/17/820728.html