基于C#编写计算机选课程序_Asp.net

一、引言

在这篇文章中，我将介绍如何开发一个简单的计算机选课程序。这个程序将允许学生根据自己的需求选择不同等级的课程，并即时显示他们的选课情况。我们将使用c#语言和windows forms来构建这个应用程序。

二、程序概述

我们的选课程序将包含三个等级的课程：基础课、语言课和应用课。基础课和语言课为限选课程，而应用课为任选课程。学生每选一门课程，选课情况将立即显示在多行文本框中。

三、界面设计

程序界面将包含三个部分：基础课选择、语言课选择和应用课选择。基础课和语言课将使用单选按钮（radiobutton）来选择，而应用课将使用复选框（checkbox）来选择。

四、代码实现

using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.linq;
using system.text;
using system.threading.tasks;
using system.windows.forms;

namespace _6_1_
{
    public partial class form1 : form
    {
        public form1()
        {
            initializecomponent();
        }
        string first = "";
        string second = "";
        string third = "";

        // 检查基础课选择
        private void checkfirst() {
            if (radiobutton1.checked)
                first = radiobutton1.text;
            else if (radiobutton2.checked)
                first = radiobutton2.text;
        }

        // 检查语言课选择
        private void checksecond()
        {
            if (radiobutton4.checked)
                second = radiobutton4.text;
            else if (radiobutton3.checked)
                second = radiobutton3.text;
            else if (radiobutton6.checked)
                second = radiobutton6.text;
            else if (radiobutton5.checked)
                second = radiobutton5.text;
            else if (radiobutton7.checked)
                second = radiobutton7.text;
        }

        // 检查应用课选择
        private void checkthird() 
        {
            third = "";
            if (checkbox1.checked)
                third += " " + checkbox1.text + " ";
            if (checkbox2.checked)
                third += " " + checkbox2.text + " ";
            if (checkbox3.checked)
                third += " " + checkbox3.text + " ";
            if (checkbox4.checked)
                third += " " + checkbox4.text + " ";
            if (checkbox5.checked)
                third += " " + checkbox5.text + " ";
        }

        // 显示选课结果
        private void showmsg() {
            textbox1.text = "您的选课结果如下：\r\n";
            if (!first.equals(""))
                textbox1.text += "基础：" + first + "\r\n";
            if (!second.equals(""))
                textbox1.text += "语言：" + second + "\r\n";
            if (!third.equals(""))
                textbox1.text += "应用：" + third + "\r\n";
        }

        // 事件处理
        private void radiobutton4_checkedchanged(object sender, eventargs e)
        {
            checkfirst();
            showmsg();
        }
        
        private void form1_load(object sender, eventargs e)
        {
            checksecond();
            showmsg();
        }

        private void checkbox4_checkedchanged(object sender, eventargs e)
        {
            checkthird();
            showmsg();
        }
    }
}