我无法验证radiobutton列表 [英] I can't validate a radiobutton list

问题描述

我想要检查至少一个radiobutton。我的asp代码看起来像

 <   asp：RadioButtonList     ID   =  rbtOdgovor    runat   =  server  
   
                          < span class =code-attribute>                               RepeatLayout   = 表    AutoPostBack   =  True    CausesValidation   =  True >  
 <   asp： ListItem    文字  = 是   值  =  rbtYes >  <   / asp：ListItem  >  
 <   asp：ListItem    文本  = 否   值  =  rbtNo >  <   / asp：ListItem  >  
 
 <   / asp：RadioButtonList  >  
 <   asp：RequiredFieldValidator   
   
                                                         ID  < span class =code-keyword> =  ValidatorOdgovor  
  < span class =code-attribute> 
                  < span class =code-attribute>                                       runat   =  server  
   
                                                  < span class =code-attribute>       ControlToValidate   =  rbtOdgovor  
   
                                                         ErrorMessage   = 请输入一个值; ValidateRequestMode = 已启用 >  < ;   / asp：RequiredFieldValidator  >  

 <   asp：按钮    runat   = 服务器    ID   =  btnSave   文字  = 答案   字体名称  =  Tahoma   高度  =  30px   宽度  =  100px      OnClick   =  btnSave_Click    ValidateRequestMode   = 已启用    /  >  

但它不起作用!!

解决方案

查看此

http://forums.asp.net/t/1199803.aspx [ ^ ]

最简单的方法如上来自Jos的方法。使用RadioButtonList和RequiredFieldValidator。

 <   asp：RadioButtonList     ID   =   RadioButtonList1    runat   = 服务器 >  
 <   asp：ListItem  >  north <   / asp：ListItem  >  
 <   asp：ListItem  >  west <   / asp：ListItem  >  
 <   / asp：RadioButtonList  >  
 < ;   asp：RequiredFieldValidator     ID   =  RequiredFieldValidator1    runat   =  server  
   
                           ControlToValidate   =  RadioButtonList1    ErrorMessage   =  RequiredFieldValidator >  
 <   / asp：RequiredFieldValidator  >  

2.机智hout RadioButtonList，如果你想要一组radiobutton，你也可以通过CustomValidator实现它。

 < script     language   =  javascript    type   =  text / javascript    >  
函数CustomValidator1_ClientValidate（source，args）
 {
  if （document.getElementById（ <％= RadioButton1.ClientID％>）。 checked  || document.getElementById（ <％= RadioButton2.ClientID％>）。已检查）
 {
 args.IsValid =  true ; 
} 
  else  
 {
 args.IsValid =  false ; 
} 
 
} 
  //    - >  
 < /   script  >  
< body> 
< form id =   form1 runat =   server >  
< div> 
< asp：RadioButton ID =   RadioButton1 runat =   server GroupName =   location Text =   north /> 
< asp：RadioButton ID =   RadioButton2 runat =   server GroupName =   location Text =   west /> 
< asp：按钮ID =   Button1 runat =   server Text =  按钮 onclick =   Button1_Click /> 
< asp：CustomValidator id =   CustomValidator1 runat =   server Display =  动态 ErrorMessage =  请选择 ClientValidationFunction =   CustomValidator1_ClientValidate OnServerValidate =   CustomValidator1_ServerValidate >  < /   asp：CustomValidator  >  
 < /   div  >  
 < /  表格 >  
 < /   body  >  

< pre lang =c＃> protected void CustomValidator1_ServerValidate（ object source，ServerValidateEventArgs args）
{
args.IsValid = RadioButton1.Checked || RadioButton2.Checked;
}
受保护 void Button1_Click（ object sender，EventArgs e）
{
if （Page.IsValid）
{
< span class =code-comment> // 验证成功。
}
}

代码块已更正

 <   asp：RadioButtonList   
   
           ID   =  RadioButtonList1  
   
           runat   =  server  
   
           RepeatColumns   =  3 >  
 <   asp：ListItem  > 红色<   / asp：ListItem  >  
 <   asp：ListItem  > 黄色<   / asp：ListItem  >  
 <   asp：ListItem  > 蓝色<   / asp：ListItem  >  
 <   asp：ListItem  > 绿色<   / asp：ListItem  >  
 <   / asp：RadioButtonList   >  
 <   asp：RequiredFieldValidator   
   
           ID   =  ReqiredFieldValidator1 < span class =code-attribute> 
   
    < span class =code-attribute>       runat   =  server  
   
           ControlToValidate   =  RadioButtonList1  
   
           ErrorMessage  < span class =code-keyword> = 您必须选择自己喜欢的颜色！ >  * 
 <   / asp：RequiredFieldValidator  >  

I want at least one radiobutton to be checked. My asp code looks like

<asp:RadioButtonList ID="rbtOdgovor" runat="server"

                           RepeatLayout="Table" AutoPostBack="True" CausesValidation="True">
                           <asp:ListItem Text="yes" Value="rbtYes"></asp:ListItem>
                           <asp:ListItem Text="No" Value="rbtNo"></asp:ListItem>

                       </asp:RadioButtonList>
                       <asp:RequiredFieldValidator

                           ID="ValidatorOdgovor"

                           runat="server"

                           ControlToValidate="rbtOdgovor"

                           ErrorMessage="Please enter a value; ValidateRequestMode="Enabled"></asp:RequiredFieldValidator>

<asp:Button runat="server" ID="btnSave" Text="Answer" Font-Names="Tahoma" Height="30px" Width="100px"  OnClick="btnSave_Click" ValidateRequestMode="Enabled" />

But it doesnt work!!

解决方案

Hi,

Check this
http://forums.asp.net/t/1199803.aspx[^]

Hi,

The simplest way is as the above approach from Jos. Using a RadioButtonList and a RequiredFieldValidator.

<asp:RadioButtonList ID="RadioButtonList1" runat="server">
            <asp:ListItem>north</asp:ListItem>
            <asp:ListItem>west</asp:ListItem>
        </asp:RadioButtonList>
        <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"

            ControlToValidate="RadioButtonList1" ErrorMessage="RequiredFieldValidator">
        </asp:RequiredFieldValidator>

2. Without RadioButtonList and if you want a group radiobutton insteads, you can also implement it by CustomValidator.

<script language="javascript" type="text/javascript" >
function CustomValidator1_ClientValidate(source,args)
{
    if(document.getElementById("<%= RadioButton1.ClientID %>").checked || document.getElementById("<%= RadioButton2.ClientID %>").checked)
    {
        args.IsValid = true;
    }
    else
    {
        args.IsValid = false;
    }

}
//-->
</script>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:RadioButton ID="RadioButton1" runat="server" GroupName="location" Text="north" />
    <asp:RadioButton ID="RadioButton2" runat="server" GroupName="location" Text="west" />
    <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
    <asp:CustomValidator id="CustomValidator1" runat="server" Display="Dynamic" ErrorMessage="please choose" ClientValidationFunction="CustomValidator1_ClientValidate" OnServerValidate="CustomValidator1_ServerValidate"></asp:CustomValidator>
    </div>
    </form>
</body>

protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
{
    args.IsValid = RadioButton1.Checked || RadioButton2.Checked;
}
protected void Button1_Click(object sender, EventArgs e)
{
    if (Page.IsValid)
    {
        //validate is successful.
    }
}

code blocks corrected

<asp:RadioButtonList

    ID="RadioButtonList1"

    runat="server"

    RepeatColumns="3">
    <asp:ListItem>Red</asp:ListItem>
    <asp:ListItem>Yellow</asp:ListItem>
    <asp:ListItem>Blue</asp:ListItem>
    <asp:ListItem>Green</asp:ListItem>
</asp:RadioButtonList>
<asp:RequiredFieldValidator

    ID="ReqiredFieldValidator1"

    runat="server"

    ControlToValidate="RadioButtonList1"

    ErrorMessage="You must Select your favorite color!">*
</asp:RequiredFieldValidator>

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