Hello World

private void CreateSegment(Control ctl, int number) { Graphics g = ctl.CreateGraphics(); Pen p = new Pen(Color.Orange, 10); Point po1 = new Point(10, 10); Point po2 = new Point(10, 50); Point po3 = new Point(10, 90); Point po4 = new Point(60, 10); Point po5 = new Point(60, 50); Point po6 = new Point(60, 90); g.Clear(Color.Black); if (number == 0) { g.DrawLine(p, po1, po2); g.D..

double nTotalSeconds = 90; DateTime dt; private void Form_Load(object sender, EventArgs e) { dt = new DateTime(); timer1.Interval = 1000; timer1.Enabled = true; } private void timer1_Tick(object sender, EventArgs e) { nTotalSeconds--; textBox1.Text = dt.AddSeconds(nTotalSeconds).ToString("HH:mm:ss"); if(nTotalSeconds == 0) timer1.Enabled = false; } 출력 00:01:30 00:01:29 00:..

DateTime startYMD = new DateTime(DateTime.Today.Year, DateTime.Today.Month, 1); //이번달 마지막날 string lYMD = startYMD.AddMonths(1).AddDays(-1).ToString("yyyyMMdd"); 또는 int daysInJuly = System.DateTime.DaysInMonth(DateTime.Now.Year, DateTime.Now.Month);//지정된 월과 연도의 일수를 반환합니다