ctlclock.cs

这是.net2005学习不可缺少的教程

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

namespace ctlClockLib
{
    public partial class UserControl1 : UserControl
    {

        private Color colFColor;
        private Color colBColor;

        public Color ClockBackColor
        {
            // Retrieves the value of the private variable colBColor.
            get
            {
                return colBColor;
            }
            // Stores the selected value in the private variable colBColor, and 
            // updates the background color of the label control lblDisplay.
            set
            {
                colBColor = value;
                lblDisplay.BackColor = colBColor;
            }
        }
        // Provides a similar set of instructions for the foreground color.
        public Color ClockForeColor
        {
            get
            {
                return colFColor;
            }
            set
            {
                colFColor = value;
                lblDisplay.ForeColor = colFColor;
            }
        }


        public UserControl1()
        {
            InitializeComponent();
        }

        protected virtual void timer1_Tick(object sender, EventArgs e)
        {
            lblDisplay.Text = DateTime.Now.ToLongTimeString(); 
        }

        protected override void timer1_Tick(object sender, System.EventArgs e)
        {
            // Calls the Timer1_Tick method of ctlClock.
            base.timer1_Tick(sender, e);
            // Checks to see if the alarm is set.
            if (AlarmSet == false)
                return;
            else
            // If the date, hour, and minute of the alarm time are the same as
            // the current time, flash an alarm. 
            {
                if (AlarmTime.Date == DateTime.Now.Date && AlarmTime.Hour ==
                    DateTime.Now.Hour && AlarmTime.Minute == DateTime.Now.Minute)
                {
                    // Sets lblAlarmVisible to true, and changes the background color based on
                    // the value of blnColorTicker. The background color of the label 
                    // will flash once per tick of the clock.
                    lblAlarm.Visible = true;
                    if (blnColorTicker == false)
                    {
                        lblAlarm.BackColor = Color.Red;
                        blnColorTicker = true;
                    }
                    else
                    {
                        lblAlarm.BackColor = Color.Blue;
                        blnColorTicker = false;
                    }
                }
                else
                {
                    // Once the alarm has sounded for a minute, the label is made 
                    // invisible again.
                    lblAlarm.Visible = false;
                }
            }
        }

        protected override void timer1_Tick(object sender, System.EventArgs e)
        {
            // Calls the Timer1_Tick method of ctlClock.
            base.timer1_Tick(sender, e);
            // Checks to see if the alarm is set.
            if (AlarmSet == false)
                return;
            else
            // If the date, hour, and minute of the alarm time are the same as
            // the current time, flash an alarm. 
            {
                if (AlarmTime.Date == DateTime.Now.Date && AlarmTime.Hour ==
                    DateTime.Now.Hour && AlarmTime.Minute == DateTime.Now.Minute)
                {
                    // Sets lblAlarmVisible to true, and changes the background color based on
                    // the value of blnColorTicker. The background color of the label 
                    // will flash once per tick of the clock.
                    lblAlarm.Visible = true;
                    if (blnColorTicker == false)
                    {
                        lblAlarm.BackColor = Color.Red;
                        blnColorTicker = true;
                    }
                    else
                    {
                        lblAlarm.BackColor = Color.Blue;
                        blnColorTicker = false;
                    }
                }
                else
                {
                    // Once the alarm has sounded for a minute, the label is made 
                    // invisible again.
                    lblAlarm.Visible = false;
                }
            }
        }

    
    }
}