简单教程
提交运行
代码编辑器：
<script runat="server"> Sub Check(sender As Object, e As EventArgs) dim i mess.Text="<p>Selected Item(s):</p>" for i=0 to check1.Items.Count-1 if check1.Items(i).Selected then mess.Text+=check1.Items(i).Text + "<br>" end if next End Sub </script> <!DOCTYPE html> <meta charset="utf-8" /> <form runat="server"> <asp:CheckBoxList id="check1" AutoPostBack="True" TextAlign="Right" OnSelectedIndexChanged="Check" runat="server"> <asp:ListItem>Item 1</asp:ListItem> <asp:ListItem>Item 2</asp:ListItem> <asp:ListItem>Item 3</asp:ListItem> <asp:ListItem>Item 4</asp:ListItem> <asp:ListItem>Item 5</asp:ListItem> <asp:ListItem>Item 6</asp:ListItem> </asp:CheckBoxList> <br> <asp:label id="mess" runat="server"/> </form>
运行结果：