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 例5_1派生类
{

	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form  
	{
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.TextBox textBox3;
		private System.Windows.Forms.TextBox textBox4;
		private System.Windows.Forms.TextBox textBox5;
		private System.Windows.Forms.TextBox textBox6;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.Label label5;
		private System.Windows.Forms.Label label6;
		private System.Windows.Forms.Label label7;
		private System.Windows.Forms.Label label8;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
		/// <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.textBox1 = new System.Windows.Forms.TextBox();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.textBox3 = new System.Windows.Forms.TextBox();
			this.textBox4 = new System.Windows.Forms.TextBox();
			this.textBox5 = new System.Windows.Forms.TextBox();
			this.textBox6 = new System.Windows.Forms.TextBox();
			this.label2 = new System.Windows.Forms.Label();
			this.label3 = new System.Windows.Forms.Label();
			this.label4 = new System.Windows.Forms.Label();
			this.label5 = new System.Windows.Forms.Label();
			this.label6 = new System.Windows.Forms.Label();
			this.label7 = new System.Windows.Forms.Label();
			this.label8 = new System.Windows.Forms.Label();
			this.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(128, 51);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(96, 25);
			this.textBox1.TabIndex = 0;
			this.textBox1.Text = "";
			// 
			// textBox2
			// 
			this.textBox2.Location = new System.Drawing.Point(259, 51);
			this.textBox2.Name = "textBox2";
			this.textBox2.Size = new System.Drawing.Size(96, 25);
			this.textBox2.TabIndex = 1;
			this.textBox2.Text = "";
			// 
			// textBox3
			// 
			this.textBox3.Location = new System.Drawing.Point(389, 51);
			this.textBox3.Name = "textBox3";
			this.textBox3.Size = new System.Drawing.Size(96, 25);
			this.textBox3.TabIndex = 2;
			this.textBox3.Text = "";
			// 
			// textBox4
			// 
			this.textBox4.Location = new System.Drawing.Point(520, 51);
			this.textBox4.Name = "textBox4";
			this.textBox4.Size = new System.Drawing.Size(96, 25);
			this.textBox4.TabIndex = 3;
			this.textBox4.Text = "";
			// 
			// textBox5
			// 
			this.textBox5.Location = new System.Drawing.Point(256, 113);
			this.textBox5.Name = "textBox5";
			this.textBox5.Size = new System.Drawing.Size(96, 25);
			this.textBox5.TabIndex = 4;
			this.textBox5.Text = "";
			// 
			// textBox6
			// 
			this.textBox6.Location = new System.Drawing.Point(523, 113);
			this.textBox6.Name = "textBox6";
			this.textBox6.Size = new System.Drawing.Size(96, 25);
			this.textBox6.TabIndex = 5;
			this.textBox6.Text = "";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(149, 10);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(64, 31);
			this.label2.TabIndex = 8;
			this.label2.Text = "学号";
			this.label2.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(277, 10);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(64, 31);
			this.label3.TabIndex = 9;
			this.label3.Text = "姓名";
			this.label3.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
			// 
			// label4
			// 
			this.label4.Location = new System.Drawing.Point(405, 10);
			this.label4.Name = "label4";
			this.label4.Size = new System.Drawing.Size(64, 31);
			this.label4.TabIndex = 10;
			this.label4.Text = "性别";
			this.label4.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
			// 
			// label5
			// 
			this.label5.Location = new System.Drawing.Point(533, 10);
			this.label5.Name = "label5";
			this.label5.Size = new System.Drawing.Size(64, 31);
			this.label5.TabIndex = 11;
			this.label5.Text = "年龄";
			this.label5.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
			// 
			// label6
			// 
			this.label6.Location = new System.Drawing.Point(181, 113);
			this.label6.Name = "label6";
			this.label6.Size = new System.Drawing.Size(64, 31);
			this.label6.TabIndex = 12;
			this.label6.Text = "成绩1";
			this.label6.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
			// 
			// label7
			// 
			this.label7.Location = new System.Drawing.Point(437, 113);
			this.label7.Name = "label7";
			this.label7.Size = new System.Drawing.Size(64, 31);
			this.label7.TabIndex = 13;
			this.label7.Text = "成绩2";
			this.label7.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
			// 
			// label8
			// 
			this.label8.Location = new System.Drawing.Point(43, 175);
			this.label8.Name = "label8";
			this.label8.Size = new System.Drawing.Size(533, 92);
			this.label8.TabIndex = 14;
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(587, 175);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(85, 29);
			this.button1.TabIndex = 15;
			this.button1.Text = "创建对象";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(587, 226);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(85, 30);
			this.button2.TabIndex = 16;
			this.button2.Text = "退出";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(8, 18);
			this.ClientSize = new System.Drawing.Size(693, 295);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.label8);
			this.Controls.Add(this.label7);
			this.Controls.Add(this.label6);
			this.Controls.Add(this.label5);
			this.Controls.Add(this.label4);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.textBox6);
			this.Controls.Add(this.textBox5);
			this.Controls.Add(this.textBox4);
			this.Controls.Add(this.textBox3);
			this.Controls.Add(this.textBox2);
			this.Controls.Add(this.textBox1);
			this.Name = "Form1";
			this.Text = "创建派生类对象";
			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)
		{
			string idd=textBox1.Text;
			string namex=textBox2.Text;
			string sexx=textBox3.Text;
			byte agex=Convert.ToByte(textBox4.Text);
			byte scorex1=Convert.ToByte(textBox5.Text);
			byte scorex2=Convert.ToByte(textBox6.Text);
			Student_1 subS=new Student_1(idd,namex,sexx,agex,scorex1,scorex2);
			label8.Text=subS.Show( )+"总分："+subS.Total( ).ToString( )
				+"  平均分："+subS.Average( ).ToString( );
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			Application.Exit( );
		}
	}
	public class Student    //基类定义
	{
		protected string id;
		protected string name;
		protected string sex;
		protected byte age;
		public Student( ){ }
		public Student(string idd,string namex,string sexx,byte agex)
		{
			id=idd;
			name=namex;
			sex=sexx;
			age=agex;
		}
		public string Show( )
		{
			string show="学号："+id.ToString( )+"  姓名："+name
				+"  性别："+sex+"  年龄："+age.ToString( )+'\n';
			return show;
		}
	}
	public class Student_1: Student    //派生类定义
	{
		private byte score1,score2;
		public Student_1( ){ }
		public Student_1(string idd,string namex,string sexx, byte agex ,
			byte scorex1,byte scorex2):base(idd,namex,sexx,agex)
		{
			score1=scorex1;
			score2=scorex2;
		}
		public uint Total( )   // 求总分
		{
			return (uint)score1+(uint)score2;
		}
		public float Average( )
		{
			return (float)(score1+score2)/2;   //求平均分
		}
	}
}