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 WinAppInheritance8_1
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Button button1;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		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.label1 = new System.Windows.Forms.Label();
			this.button1 = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(12, 16);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(232, 96);
			this.label1.TabIndex = 0;
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(91, 136);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(75, 32);
			this.button1.TabIndex = 1;
			this.button1.Text = "创建";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(8, 18);
			this.ClientSize = new System.Drawing.Size(256, 184);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.label1);
			this.Name = "Form1";
			this.Text = "创建派生类";
			this.ResumeLayout(false);

		}
		#endregion

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

		private void button1_Click(object sender, System.EventArgs e)
		{
			student_1 s1=new student_1( );
			s1.id=2005001;s1.name="张三";s1.sex='女';s1.age=21;s1.score1=99;s1.score2=88;
			label1.Text=s1.show( )+"\n总分："+s1.total( ).ToString( )
				+"      平均分："+s1.average( ).ToString( );
		}
	
		public class student
		{
			public uint id;
			public string name;
			public char sex;
			public byte age;
			public string show( )
			{
				return "学号："+id+"  姓名："+name+"\n性别："+sex+"       年龄："+age;
			}
		}
		public class student_1: student
		{
			public byte score1,score2;
			public uint total()
			{
				return (uint)score1+(uint)score2;
			}
			public float average()
			{
				return (float)(score1+score2)/2;
			}
		}

	}
}