startanswer.cs

一个简单的考生答题系统

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Collections;

namespace Myschool
{
   
    public partial class StartAnswer : Form
    {
        public static int i = 59, j = 19,s=1,t=0;
        public int index = 0;
       
        ArrayList arr = new ArrayList();
        AnswerCard ac = new AnswerCard();
        public StartAnswer()
        {

            InitializeComponent();
        }
     
        private void StartAnswer_Load(object sender, EventArgs e)
        {
            t = 0;
           arr = Myschool.Select.Title(ExamOnline.sub,QueHelp.allQuestionid[index]);
           lblQuestion.Text = "问题" + s;
           time.Text = "剩余时间：" + j + ":" + i;
           txtque.Text = arr[t].ToString();
           radA.Text = "A:" + arr[++t].ToString();
           radB.Text = "B:" + arr[++t].ToString();
           radC.Text = "C:" + arr[++t].ToString();
           radD.Text = "D:" + arr[++t].ToString();
           SelectRadButon();
        }
        //判断选中值的方法
        private void SelectedAnswer()
        {
            if (radA.Checked)
            {
                QueHelp.studentAnswers[index] = "A";
            } if (radB.Checked)
            {
                QueHelp.studentAnswers[index] = "B";
            } if (radC.Checked)
            {
                QueHelp.studentAnswers[index] = "C";
            } if (radD.Checked)
            {
                QueHelp.studentAnswers[index] = "D";
            }
        }
        /// <summary>
        /// 按下一题时把单选按钮清空
        /// </summary>
        private void SelectRad() {
          
                radA.Checked = false;
                radB.Checked = false;
                radC.Checked = false;
                radD.Checked = false;
        }
        /// <summary>
        /// 判断选中的按钮
        /// </summary>

        private void SelectRadButon()
        {
            if (QueHelp.studentAnswers[index].Trim() == "A")
            {
                radA.Checked = true;
            } if (QueHelp.studentAnswers[index].Trim() == "B")
            {
                radB.Checked = true;
            } if (QueHelp.studentAnswers[index].Trim() == "C")
            {
                radC.Checked = true;
            } if (QueHelp.studentAnswers[index].Trim() == "D")
            {
                radD.Checked = true;
            }
        }

        private void timercol_Tick(object sender, EventArgs e)
        {
            i--;
            if (i == 0) {
                i = 59;
                j--;
            }
            time.Text = "剩余时间：" + j + ":" + i;
            if (j == 0) {
                MessageBox.Show("该交卷了！","提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
                this.Close();
            }
        }

        private void btnnext_Click_1(object sender, EventArgs e)
        {
            SelectedAnswer();
            SelectRad();
            index++;
            s++;
            if (index == QueHelp.allQuestionid.Length) {
                ac.MdiParent = MainForm.ActiveForm;
                ac.Show();
                this.Close();
                return;
            }
            t = 0;

            arr = Myschool.Select.Title(ExamOnline.sub, QueHelp.allQuestionid[index]);
            lblQuestion.Text = "问题" + s;
            if (t==arr.Count) {
                
                ac.MdiParent = MainForm.ActiveForm;
                ac.Show();
                this.Close();
                return;
            }

            txtque.Text = arr[t].ToString();
            radA.Text = "A:" + arr[++t].ToString();
            radB.Text = "B:" + arr[++t].ToString();
            radC.Text = "C:" + arr[++t].ToString();
            radD.Text = "D:" + arr[++t].ToString();
            SelectedAnswer();
            SelectRadButon();
        }

        private void btnAnswercard_Click(object sender, EventArgs e)
        {
            SelectedAnswer();
            AnswerCard ac = new AnswerCard();
            ac.MdiParent = MainForm.ActiveForm;
            ac.Show();
            this.Close();
        }
    }
}