randtestform.cs

计算机考试管理系统 包括模拟测试

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

namespace CTestApp
{
    public partial class RandTestForm : Form
    {
        protected SqlConnection conn;

        public RandTestForm()
        {
            InitializeComponent();
        }

        private void RandTestForm_Load(object sender, EventArgs e)
        {
            try
            {
                conn = new SqlConnection(ConfigurationManager.ConnectionStrings["TestLibraryConnectionString"].ConnectionString);
                conn.Open();
                this.GenQuestion();
            }
            catch (Exception exp)
            {
                MessageBox.Show("无法建立数据连接:" + exp.Message + exp.StackTrace, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                this.Close();
            }
            finally
            {
                if (conn != null && conn.State != ConnectionState.Closed)
                    conn.Close();
            }
        }

        private void RandTestForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            Application.Exit();
        }

        private void btnGen_Click(object sender, EventArgs e)
        {
            try
            {
                conn.Open();
                this.GenQuestion();
                lbAnswer.Visible = false;
            }
            catch (Exception exp)
            {
                MessageBox.Show("生成失败:" + exp.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            finally
            {
                if (conn != null && conn.State != ConnectionState.Closed)
                    conn.Close();
            }
        }

        private void btnSubmit_Click(object sender, EventArgs e)
        {
            if(lbAnswer.Visible == false)
                lbAnswer.Visible = true;
        }

        /// <summary>
        /// 随机生成试题
        /// </summary>
        protected void GenQuestion()
        {
            SqlCommand cmd1 = new SqlCommand("GenQuestion", conn);
            cmd1.CommandType = CommandType.StoredProcedure;
            SqlDataReader reader1 = cmd1.ExecuteReader();
            if (reader1.Read())
            {
                lbQuestion.Text = reader1[0].ToString();
                int iType = (int)reader1[6];
                if (iType == 0)
                {
                    radioButton1.Text = reader1[1].ToString();
                    radioButton2.Text = reader1[2].ToString();
                    radioButton3.Text = reader1[3].ToString();
                    radioButton4.Text = reader1[4].ToString();
                    radioButton1.Visible = true;
                    radioButton2.Visible = true;
                    radioButton3.Visible = true;
                    radioButton4.Visible = true;
                    radioButton1.Checked = false;
                    radioButton2.Checked = false;
                    radioButton3.Checked = false;
                    radioButton4.Checked = false;
                    checkBox1.Visible = false;
                    checkBox2.Visible = false;
                    checkBox3.Visible = false;
                    checkBox4.Visible = false;
                    lbAnswer.Text = "本题答案为:" + (char)(64 + int.Parse(reader1[5].ToString()));
                }
                else
                {
                    checkBox1.Text = reader1[1].ToString();
                    checkBox2.Text = reader1[2].ToString();
                    checkBox3.Text = reader1[3].ToString();
                    checkBox4.Text = reader1[4].ToString();
                    checkBox1.Visible = true;
                    checkBox2.Visible = true;
                    checkBox3.Visible = true;
                    checkBox4.Visible = true;
                    checkBox1.Checked = false;
                    checkBox2.Checked = false;
                    checkBox3.Checked = false;
                    checkBox4.Checked = false;
                    radioButton1.Visible = false;
                    radioButton2.Visible = false;
                    radioButton3.Visible = false;
                    radioButton4.Visible = false;
                    lbAnswer.Text = "本题答案为:" + MultiAnswer.Parse(reader1[5].ToString()).ToAnswerString();
                }
            }
        }
    }
}