第四章方法和数组 Fig 4.1 SquareInt.cs

本文介绍了一个使用C#编写的简单程序，该程序能够计算并显示1到10之间每个整数的平方值。通过按钮点击触发计算过程，并将结果显示在界面上。

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

namespace SquareInt
{
     /// <summary>
    /// summary description fro SquareInt.
    /// </summary>
    public class SquareInt :System.Windows.Forms.Form
    {
        private System.Windows.Forms.Button calculateButton;
        private System.Windows.Forms.Label outputLabel;
        ///<summary>
        ///Required descriptioin variable
        ///</summary>
        private System.ComponentModel.Container components = null;

        public SquareInt()
        {
             //
            // required for windows form designer support
            //
            InitializeComponent();
        }
        /// <summary>
        ///Clean up any resource being used
        ///</summary>
        protected override void Dispose( bool disposing )
        {
           if(disposing)
           {
              if( components != null )
            {
                components.Dispose();

            }

           }
           base.Dispose(disposing);

        }
    # region Windows Form Designer generated code

    ///<summary>
    ///required method for description of suport
    ///</summary>
    private void InitializeComponent()
    {
         this.calculateButton =
            new System.Windows.Forms.Button();
        this.outputLabel = new System.Windows.Forms.Label();
        this.SuspendLayout();
        //
        // calculateButton
        //
        this.calculateButton.Location =
           new System.Drawing.Point(32, 8);
        this.calculateButton.Name = "CalculateButton";
        this.calculateButton.Size =
           new System.Drawing.Size(120, 23);
        this.calculateButton.TabIndex = 0;
        this.calculateButton.Text ="Calculate Squares";
        this.calculateButton.Click +=
        new System.EventHandler(this.calculateButton_Click);
        //
        //outputLable
        //
        this.outputLabel.Location=
           new System.Drawing.Point(16, 48);
        this.outputLabel.Name ="outputLable";
        this.outputLabel.Size =
           new System.Drawing.Size(152,144);
        this.outputLabel.TabIndex = 1;
        //
        // Square Int
        //
        this.AutoScaleBaseSize =
           new System.Drawing.Size(5, 13);
        this.ClientSize =
           new System.Drawing.Size(184,197);
        this.Controls.AddRange(
           new System.Windows.Forms.Control[] {
              this.outputLabel,
            this.calculateButton});
        this.Name = "SquareInt";
        this.Text = "SquareInt";
        this.ResumeLayout(false);

    }
    #endregion
    ///<summary>
    ///the main entry point for the application
    ///</summary>

    [STAThread]
    static void Main()
    {
       Application.Run( new SquareInt());
    }
    // Square method definition

    int Square( int y)
    {
       return y*y;
    }

    private void calculateButton_Click(
       object sender , System.EventArgs e)
       {
          outputLabel.Text = "";

        // loop 10 times
        for (int counter = 1; counter <= 10; counter++)
        {
             int result = Square(counter);

            outputLabel.Text += " The square of " + counter + "is " +result + "/n";

        }

    }



    }

}