webform1.aspx.cs

C#2005 实例源代码

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class WebForm1 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void CheckBoxList1_SelectedIndexChanged(object sender, System.EventArgs e)
    {
        Response.Write("您选择的爱好包括：");
        //循环检查每一个复选框
        foreach (System.Web.UI.WebControls.ListItem item in CheckBoxList1.Items)
        {
            //用户是否选择本项
            if (item.Selected)
            {
                //如果用户选择了“全部”，则全部输出
                if (item.Value == "全部")
                {
                    //输出除去“全部”之外的所有爱好，并结束循环
                    for (int i = 1; i < CheckBoxList1.Items.Count; i++)
                    {
                        CheckBoxList1.Items[i].Selected = true;
                        Response.Write(CheckBoxList1.Items[i].Text + " ");
                    }
                    break;	//结束foreach循环
                }
                //如果用户没有选择“全部”，则逐项输出
                else
                {
                    Response.Write(item.Text + " ");
                }
            }
        }
    }
}