form1.cs

Visual C#2005程序设计教程

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

namespace ExampleRemainder
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		uint remainder;
		uint minute;
		uint second;
		string msg;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.Timer timer1;
		private System.Windows.Forms.Timer timer2;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.TextBox textBox3;
		private System.Windows.Forms.Label label5;
		private System.Windows.Forms.Button btnReset;
		private System.ComponentModel.IContainer components;

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
            this.components = new System.ComponentModel.Container();
            this.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            this.label3 = new System.Windows.Forms.Label();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.textBox2 = new System.Windows.Forms.TextBox();
            this.timer1 = new System.Windows.Forms.Timer(this.components);
            this.timer2 = new System.Windows.Forms.Timer(this.components);
            this.label4 = new System.Windows.Forms.Label();
            this.textBox3 = new System.Windows.Forms.TextBox();
            this.label5 = new System.Windows.Forms.Label();
            this.btnReset = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // label1
            // 
            this.label1.Location = new System.Drawing.Point(21, 41);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(134, 30);
            this.label1.TabIndex = 0;
            this.label1.Text = "当前时间：";
            this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
            // 
            // label2
            // 
            this.label2.Location = new System.Drawing.Point(21, 154);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(134, 30);
            this.label2.TabIndex = 1;
            this.label2.Text = "倒计时：";
            this.label2.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
            // 
            // label3
            // 
            this.label3.Location = new System.Drawing.Point(51, 226);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(288, 30);
            this.label3.TabIndex = 2;
            this.label3.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // textBox1
            // 
            this.textBox1.Location = new System.Drawing.Point(181, 41);
            this.textBox1.Name = "textBox1";
            this.textBox1.ReadOnly = true;
            this.textBox1.Size = new System.Drawing.Size(134, 25);
            this.textBox1.TabIndex = 3;
            // 
            // textBox2
            // 
            this.textBox2.Location = new System.Drawing.Point(181, 154);
            this.textBox2.Name = "textBox2";
            this.textBox2.Size = new System.Drawing.Size(134, 25);
            this.textBox2.TabIndex = 4;
            this.textBox2.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBox2_KeyPress);
            // 
            // timer1
            // 
            this.timer1.Interval = 1000;
            this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
            // 
            // timer2
            // 
            this.timer2.Enabled = true;
            this.timer2.Interval = 500;
            this.timer2.Tick += new System.EventHandler(this.timer2_Tick);
            // 
            // label4
            // 
            this.label4.Location = new System.Drawing.Point(320, 154);
            this.label4.Name = "label4";
            this.label4.Size = new System.Drawing.Size(43, 30);
            this.label4.TabIndex = 5;
            this.label4.Text = "分";
            this.label4.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
            // 
            // textBox3
            // 
            this.textBox3.Location = new System.Drawing.Point(181, 93);
            this.textBox3.Name = "textBox3";
            this.textBox3.ReadOnly = true;
            this.textBox3.Size = new System.Drawing.Size(134, 25);
            this.textBox3.TabIndex = 7;
            this.textBox3.Visible = false;
            // 
            // label5
            // 
            this.label5.Location = new System.Drawing.Point(21, 93);
            this.label5.Name = "label5";
            this.label5.Size = new System.Drawing.Size(134, 29);
            this.label5.TabIndex = 6;
            this.label5.Text = "结束时间：";
            this.label5.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
            this.label5.Visible = false;
            // 
            // btnReset
            // 
            this.btnReset.Location = new System.Drawing.Point(139, 278);
            this.btnReset.Name = "btnReset";
            this.btnReset.Size = new System.Drawing.Size(100, 29);
            this.btnReset.TabIndex = 8;
            this.btnReset.Text = "重新开始";
            this.btnReset.Click += new System.EventHandler(this.button1_Click);
            // 
            // Form1
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(8, 18);
            this.ClientSize = new System.Drawing.Size(389, 350);
            this.Controls.Add(this.btnReset);
            this.Controls.Add(this.textBox3);
            this.Controls.Add(this.label5);
            this.Controls.Add(this.label4);
            this.Controls.Add(this.textBox2);
            this.Controls.Add(this.textBox1);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label1);
            this.Name = "Form1";
            this.Text = "倒计时";
            this.Activated += new System.EventHandler(this.Form1_Activated);
            this.ResumeLayout(false);
            this.PerformLayout();

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void textBox2_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
		{
			if(e.KeyChar=='\r')
			{
				if(textBox2.Text=="")
					return;
				remainder=Convert.ToUInt32(textBox2.Text)*60;
				timer2.Enabled=false;
				timer1.Enabled=true;
				label5.Visible=true;
				textBox3.Visible=true;
				label1.Text="开始时间：";
			}
		}

		private void timer2_Tick(object sender, System.EventArgs e)
		{
			textBox1.Text=DateTime.Now.ToLongTimeString( );
			//textBox1.Text=DateTime.Now.Hour.ToString( )+"："
			//	+DateTime.Now.Minute.ToString( )+"："
			//	+DateTime.Now.Second.ToString( );
			//textBox2.Text=DateTime.Now.TimeOfDay.ToString( );
		}

		private void timer1_Tick(object sender, System.EventArgs e)
		{
			textBox3.Text=DateTime.Now.Hour.ToString( )+"："
				+DateTime.Now.Minute.ToString( )+"："
				+DateTime.Now.Second.ToString( );
			remainder--;
			minute=remainder/60;
			second=remainder%60;
			if(second<10)
				msg="剩余时间："+minute+"分0"+second+"秒";
			else
				msg="剩余时间："+minute+"分"+second+"秒";
			label3.Text=msg;
			if(remainder==0)
			{
				timer1.Enabled=false;
				label3.Text+="--时间到！";
			}
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			textBox2.Focus( );
			timer2.Enabled=true;
			label5.Visible=false;
			textBox3.Visible=false;
			textBox2.Text="";
			label3.Text="";
		}

		private void Form1_Activated(object sender, System.EventArgs e)
		{
			textBox2.Focus( );
		}
	}
}