关于CheckBoxList的问题
//================a.aspx如下：===================//
<asp:CheckBoxList ID= "Certification " RepeatDirection= "Horizontal " runat= "server ">
<asp:ListItem Value= "ISO-9000 " Text= "ISO-9000 "> </asp:ListItem>
<asp:ListItem Value= "ISO-9002 " Text= "ISO-9002 "> </asp:ListItem>
<asp:ListItem Value= "ISO-9003 " Text= "ISO-9003 "> </asp:ListItem>
<asp:ListItem Value= "ISO-9004 " Text= "ISO-9004 "> </asp:ListItem>
<asp:ListItem Value= "ISO-14000 " Text= "ISO-14000 "> </asp:ListItem>
</asp:CheckBoxList>

//================a.aspx.cs的Page_Load如下===================//
string Cert = membershowok[ "CertificationList "].ToString();
string[] CertID = Cert.Split( ' ');
for (int x = 0; x < CertID.Length-1; x++)
{
switch (CertID[x])
{
case "ISO-9000 ":
Certification.Items[0].Selected = true;
break;
case "ISO-9002 ":
Certification.Items[1].Selected = true;
break;
case "ISO-9003 ":
Certification.Items[2].Selected = true;
break;
case "ISO-9004 ":
Certification.Items[3].Selected = true;

break;
case "ISO-14000 ":
Certification.Items[4].Selected = true;
break;
}
}
//================a.aspx.cs的Button1_Click如下===================//
string CertificationList= " ";
for (int i = 0; i < Certification.Items.Count; i++)//判断有几个选中
{
if (Certification.Items[i].Selected == true)
{
CertificationList += Certification.Items[i].Value + " ";
}
}


如果用户第一次录入没问题，就是修改的时候不知道为什么怎么都取消不了
例如开始选了3个，到后来只能增加，却不能减少选项

[解决办法]
你修改 时候 加载checkbox的数据
应该写在

if(!IsPostBack)
{
//执行checkbox数据绑定.
}
[解决办法]
友情UP