如何用脚本判断ASP.NET中的服务器控件CheckBoxList是否被选中？急急急急急急急————————在线等

var eles = document.form1.cbl
var check=false;
for(var i=0;i<eles.length;i++)
{
if(eles[i].checked)
{
check=true;
}
}

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
    <script type="text/javascript">
    function Choose()
    {
    var inputs = document.all.tags("INPUT");
    for (var i = 0; i < inputs.length; i++)
    {
        if (inputs[i].type == "checkbox" && inputs[i].id.indexOf("CheckBoxList1") >= 0 )
    {
        if(inputs[i].checked)
        {
        alert(inputs[i].id);
        break;
    }
    }
    }
    }

    </script>
</head>
<body >
    <form id="form1" runat="server">
    <asp:CheckBoxList ID="CheckBoxList1" runat="server" RepeatDirection="Horizontal">
        <asp:ListItem>aa</asp:ListItem>
        <asp:ListItem>bb</asp:ListItem>
    </asp:CheckBoxList>
        <input id="Button1" type="button" value="button" onclick="Choose();"/>
    </form>
</body>
</html>

我的意思是就单独判断它是否被选中，如果没选中就不处理
<asp:CheckBoxList ID="CheckBoxList1" runat="server" RepeatDirection="Horizontal">
        <asp:ListItem>aa</asp:ListItem>
        <asp:ListItem>bb</asp:ListItem>
    </asp:CheckBoxList>
它的处理方式

.aspx
---------------------------------------------------------
<asp:CheckBoxList ID="CheckBoxList1" runat="server">
<asp:ListItem>BB</asp:ListItem>
<asp:ListItem>AA</asp:ListItem>
<asp:ListItem>CC</asp:ListItem>
</asp:CheckBoxList>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />.cs
---------------------------------------------------------
protected void Page_Load(object sender, EventArgs e)
{
        System.Text.StringBuilder str = new System.Text.StringBuilder();
        for(int i = 0;i<this.CheckBoxList1.Items.Count;i++)
        {
            str.Append("!document.getElementById('" + this.CheckBoxList1.ClientID + "_" + i + "').checked && ");
        }
        if (str.Length > 0)
        {
            this.Button1.Attributes["onclick"] = "if(" + str.Remove(str.Length - 3, 3) + "){return false;}else{return true;}";
        }
        else
        {
            this.Button1.Attributes["onclick"] = "window.alert('啥也没有!...');return false;";
        }
}

protected void Button1_Click(object sender, EventArgs e)
{
        Response.Write("你选择了我再做服务端处理...");
}

//aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Default" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>无标题页</title>
    <script type="text/javascript">
    function Choose()
    {
        var flag = false;
    var inputs = document.all.tags("INPUT");
    for (var i = 0; i < inputs.length; i++)
    {
        if (inputs[i].type == "checkbox" && inputs[i].id.indexOf("CheckBoxList1") >= 0 )
    {
        if(inputs[i].checked)
        {
        flag = true;
    }
    }
    }
    return flag;
    }

    </script>
</head>
<body >
    <form id="form1" runat="server">
    <asp:CheckBoxList ID="CheckBoxList1" runat="server" RepeatDirection="Horizontal">
        <asp:ListItem>aa</asp:ListItem>
        <asp:ListItem>bb</asp:ListItem>
    </asp:CheckBoxList>
       <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
    </form>
</body>
</html>//aspx.cs
public partial class Default : System.Web.UI.Page
{
    private void Page_Load(object sender, System.EventArgs e)
    {
        this.Button1.Attributes["onclick"] = "return  Choose();";
    }    protected void Button1_Click(object sender, EventArgs e)
    {
        for (int i = 0; i < CheckBoxList1.Items.Count; i++)
        {
            if (CheckBoxList1.Items[i].Selected)
                Response.Write(CheckBoxList1.Items[i].Value);
        }
    }
}

因为逻辑有问题我自己改好了啊，呵呵，
<script type="text/javascript">
    function Choose()
    {
    var inputs = document.all.tags("INPUT");
    var flag = false;
        var temp = 0;
    for (var i = 0; i < inputs.length; i++)
    {
        if (inputs[i].type == "checkbox" && inputs[i].id.indexOf("chkill_")>= 0 )
    {
        if(inputs[i].checked)
        {
        //alert(inputs[i].id);
        temp = 1;
        //break;
    }
//     else
//     {
//         alert('请选择疾病及症状！');
//         return flag;
//     }
    }
    }
    if(temp==0)
    {
        alert('请选择疾病及症状！');
    }
    else
    {
        flag = true;
    }
    return flag;
    }
</script>这样就可以了，谢谢大家可，结贴咯！

8楼的,你写那是不是错的啊  protected   void   Button1_Click(object   sender,   EventArgs   e)
        {
                for   (int   i   =   0;   i   <   CheckBoxList1.Items.Count;   i++)
                {
                        if   (CheckBoxList1.Items[i].Selected)                                 Response.Write(CheckBoxList1.Items[i].Value);
                }
        } 那里如==true 话,就要全部选中才行,但是我要的结果,是只要有一个被选中都可以,

调试易

如何用脚本判断ASP.NET中的服务器控件CheckBoxList是否被选中？急急急急急急急————————在线等

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