web网页【2】

前端代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="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">

<div id="div_chk"
style = "width:1000px;border:3px outset #dd9900;margin:54px auto 0 auto;backgroup:red"
runat="server">
你学过的课程有：<br/>
<asp:CheckBox ID="C1" Text = "数据库原理" Width = "260px" runat="server" />
<asp:CheckBox ID="C3" Text = "操作系统" Width = "260px" runat="server" />
<asp:CheckBox ID="C5" Text = "c语言" Width = "260px" runat="server" />
<asp:CheckBox ID="C6" Text = "计算机网络" Width = "260px" runat="server" />
<asp:CheckBox ID="C7" Text = "管理学" Width = "260px" runat="server" />
<asp:CheckBox ID="C8" Text = "电子商务" Width = "260px" runat="server" />
<asp:CheckBox ID="C9" Text = "计算机基础" Width = "260px" runat="server" />
<br/>
<asp:Button ID="Button1" runat="server" Text="确定" onclick="Button1_Click" />
<br/>
<asp:TextBox ID="TextBox1" TextMode ="Multiline" Rows = "6" runat="server"></asp:TextBox>
<br/>
<br/>
<asp:TextBox ID="TextBox2" TextMode ="Multiline" Rows = "6" runat="server"></asp:TextBox>
<asp:Button ID="Button2" runat="server" Text="确定" onclick="Button2_Click" />
<br/>
<br/>
<div id = "div_sun" runat = "server">
<asp:Button ID="Button3" runat="server" Text="Button" />
<asp:Button ID="Button4" runat="server" Text="Button" />
<asp:Button ID="Button5" runat="server" Text="Button" />
<asp:Button ID="Button6" runat="server" Text="Button" />
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
<asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>
</div>
<asp:Button ID="Button7" runat="server" Text="显示控件个数" onclick="Button7_Click" />
</div>
</form>
</body>
</html>

　　后端代码：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

    }

    protected void Button1_Click(object sender, EventArgs e)

    {

        TextBox1.Text = "";

        CheckBox  chk;

        foreach(Control _ctl in div_chk.Controls){

            if(_ctl is CheckBox){

            chk = (CheckBox)_ctl;

                if(chk.Checked == true){

                TextBox1.Text +=chk.Text+",";

                }

            }

        }

    }

    protected void Button2_Click(object sender, EventArgs e)

    {

        char[] str1 = "abcdefg!".ToCharArray();

        foreach (char ch in str1)

        {

            TextBox2.Text += ch.ToString() + Convert.ToChar(13);

        }

    }

    protected void Button7_Click(object sender, EventArgs e)

    {

        Button bu;

        TextBox te;

        int i=0;

        int j=0;

        foreach (Control bt in div_sun.Controls)

        {

            if (bt is Button) {

                i++;

            }

            if (bt is TextBox) {

                j++;

            }

        }

        Response.Write("按钮控件"+i.ToString() + "个" + "</br>");

        Response.Write("文本框控件" + j.ToString() + "个" + "</br>");

    }

}

巴特西

web网页【2】

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