c#和SQL

来源：互联网发布：数据库开发工程师前景编辑：程序博客网时间：2024/06/06 18:55

简单的加减乘除

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        double num1, num2, result;

        private void button2_Click(object sender, EventArgs e)
        {
            num1 = double.Parse(textBox1.Text);
            num2 = double.Parse(textBox2.Text);
            result = num1 + num2;
            textBox3.Text = result.ToString();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            num1 = double.Parse(textBox1.Text);
            num2 = double.Parse(textBox2.Text);
            result = num1 - num2;
            textBox3.Text = result.ToString();
        }

        private void button5_Click(object sender, EventArgs e)
        {
            num1 = double.Parse(textBox1.Text);
            num2 = double.Parse(textBox2.Text);
            result = num1 * num2;
            textBox3.Text = result.ToString();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            num1 = double.Parse(textBox1.Text);
            num2 = double.Parse(textBox2.Text);
            result = num1 / num2;
            textBox3.Text = result.ToString();
        }

sql:

创建一个数据库 TEST2，数据文件初始大小均为 20MB，最大大小为
60MB，按 5MB 增长。日志文件初始大小为 2MB，最大大小不限定，
按15%方式增长。两种文件路径均放在 D盘根目录。

create database TEST3
on
(name=TEST3_data,
filename='D:\TEST3_data.mdf',
size=30MB,
filegrowth=2MB,
maxsize=50MB
)
log on
(name=stu_log,
filename=D:\TEST3_log.ldf',
size=1MB,
filegrowth=10%,
maxsize=unlimited

)