asp.net简单显示学习笔记

来源：互联网发布：windows 10 教程编辑：程序博客网时间：2024/06/05 14:52

实现一个如上图的功能的网页处理程序。

最简单的拖控件的。拖控件的代码就不贴了，如果哪天这个方式都忘了，真的完全没学啊。。。。。

1.用一般处理程序解决：

Count.ashx:

<%@ WebHandler Language="C#" Class="count" %>using System;using System.Web;public class count : IHttpHandler {            public void ProcessRequest (HttpContext context) {        //context.Response.ContentType = "text/html";        int x = 0;        int y = 0;        int z = 0;        int k = 0;        int total = 0;       //int strA=Convert.ToInt32(context.Request.Form["stuA"]);       // int strA, strB, strC, strD, total;       // strA = strA = strC = strD = 0;        if (!string.IsNullOrEmpty(context.Request.Form["IsPostBack"]))        {            string num1 = context.Request.Form["stuA"];            string num2 = context.Request.Form["stuB"];            string num3 = context.Request.Form["stuC"];            string num4= context.Request.Form["stuD"];            if (!string.IsNullOrEmpty(num1) && !string.IsNullOrEmpty(num2) && !string.IsNullOrEmpty(num3) && !string.IsNullOrEmpty(num4))            {                if (int.TryParse(num1, out x) && int.TryParse(num2, out y) && int.TryParse(num3, out z) && int.TryParse(num4, out k))                {                     total=x+y+z+k;                }            }                    }        System.Text.StringBuilder countStu = new System.Text.StringBuilder();//构造函数            countStu.Append("<html><head><title>简单的统计学生人数</title></head><body><form action='' method='post'>");            countStu.Append("         学校学生人数统计");            countStu.Append("<br/>A班学生人数    <input type='text' name='stuA' value='" + x.ToString() + "'><br/>");            countStu.Append("<br/>B班学生人数    <input type='text' name='stuB' value='" + y.ToString() + "'><br/>");            countStu.Append("<br/>C班学生人数    <input type='text' name='stuC' value='" + z.ToString() + "'><br/>");            countStu.Append("<br/>D班学生人数    <input type='text' name='stuD' value='" + k.ToString() + "'><br/>");            //countStu.Append("<input type='hidden' value='1' name='IsPostBack'>");            countStu.Append("<input type='submit' value='计算人数'>");            countStu.Append("   " + total.ToString());            countStu.Append("<input type='hidden' name='IsPostBack' value='1'>" +"</form></body></html>");            context.Response.Write(countStu.ToString());        }                          public bool IsReusable {        get {            return false;        }    }}

2.老师教的方法，前台用html，减轻服务器负担。

。aspx文件：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default2.aspx.cs" Inherits="Weblxt02fkj._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 runat="server">    <title></title></head><body>    <form id="form1" runat="server">    <div>    <table width="600px" >            <tr>                <td colspan="2" align ="center" >                学校学生人数统计                                     </td>            </tr>            <tr>                <td width="300px">                A班学生人数                                    </td>                <td>                                <input type ="text" id ="text1" name="r1" />                                                            </td>            </tr>            <tr>                <td>                    B班学生人数                </td>                <td>                <input type ="text" id ="text2" name="r2" />                                    </td>            </tr>            <tr>                <td>                    C班学生人数                </td>                <td>                <input type ="text" id ="text3" name="r3"  />                                    </td>            </tr>            <tr>                <td>                    D班学生人数                </td>                <td>                <input type ="text" id ="text4" name="r4" />                                    </td>            </tr>        </table>        <br />        <input type="submit" id="Button" value="计算总数" />               <br />        <%= getStr()%>            </div>    </form></body></html>

后台处理文件。aspx。cs文件：

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;namespace Weblxt02fkj{    public partial class _Default : System.Web.UI.Page    {        private string str = "";        protected void Page_Load(object sender, EventArgs e)        {            string text1 = Request.Form["r1"];            string text2 = Request.Form["r2"];            string text3 = Request.Form["r3"];            string text4 = Request.Form["r4"];            int A = Convert.ToInt32(text1);            int B = Convert.ToInt32(text2);            int C = Convert.ToInt32(text3);            int D = Convert.ToInt32(text4);            string  num = Convert.ToString(A+B+C+D);            if (text1 != null && text1 != "")            {                Button_Click(num );            }        }        public string getStr()        {            return str;        }        protected void Button_Click(string num)        {            str = "总人数为：" + num ;        }    }}

真心觉得第2种方法不错。