form1.cs

c#精彩编程百例（源代码）

namespace WinApp_math1
{
    using System;
    using System.Drawing;
    using System.Collections;
    using System.ComponentModel;
    using System.WinForms;
    using System.Data;
	/// <summary>
    ///    Summary description for Form1.
    /// </summary>
    public class Form1 : System.WinForms.Form
    {
        /// <summary>
        ///    Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components;
		private System.WinForms.ListBox listBox1;

        public Form1()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            //
            // TODO: Add any constructor code after InitializeComponent call
            //
       	AddItem("The example demonistrate the application of the Math class");
        AddItem("e is  "+Math.E);
        AddItem("pi is  "+Math.PI);
        AddItem("    ");
        AddItem("Sin of Angles from 0 to 180 Degrees:");
        for (double aa=0;aa<180.2;aa+=12.5)
        AddItem("Sin "+aa+" = "+Math.Sin(aa*Math.PI/180));
        AddItem("Calculate the following:");
        double x,y,z; 
		x=155.2;
        y=100.23;
		z=0;
        try
          {
            z=Math.Sqrt(x*x-y*y);
           }
        catch
         {
            z=Math.Sqrt(y*y-x*x);
         }
        finally
        {
           z=z+x;
        }
        AddItem("z= "+z);
}
        private int iItems=0;
        public void AddItem(string sItem)
        {
         listBox1.InsertItem(iItems,sItem);
         ++iItems;
         }

        /// <summary>
        ///    Clean up any resources being used.
        /// </summary>
        public override void Dispose()
        {
            base.Dispose();
            components.Dispose();
        }

        /// <summary>
        ///    Required method for Designer support - do not modify
        ///    the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
		{
			this.components = new System.ComponentModel.Container ();
			this.listBox1 = new System.WinForms.ListBox ();
			//@this.TrayHeight = 0;
			//@this.TrayLargeIcon = false;
			//@this.TrayAutoArrange = true;
			listBox1.Location = new System.Drawing.Point (40, 16);
			listBox1.Size = new System.Drawing.Size (296, 304);
			listBox1.TabIndex = 0;
			this.Text = "Form1";
			this.AutoScaleBaseSize = new System.Drawing.Size (6, 14);
			this.ClientSize = new System.Drawing.Size (352, 325);
			this.Controls.Add (this.listBox1);
		}
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        public static void Main(string[] args) 
        {
            Application.Run(new Form1());
        }
  }
}