form1.cs

来自「Sams Teach Yourself C# Web Programming i」· CS 代码 · 共 130 行

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

namespace Switch_Example
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class fclsSwitchExample : System.Windows.Forms.Form
	{
		private System.Windows.Forms.ComboBox cboAnimals;
		private System.Windows.Forms.Button btnShowLegs;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

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

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources 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 Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.cboAnimals = new System.Windows.Forms.ComboBox();
			this.btnShowLegs = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// cboAnimals
			// 
			this.cboAnimals.Items.AddRange(new object[] {
															"Bird",
															"Dog",
															"Cat",
															"Snake",
															"Centipede"});
			this.cboAnimals.Location = new System.Drawing.Point(80, 100);
			this.cboAnimals.Name = "cboAnimals";
			this.cboAnimals.Size = new System.Drawing.Size(121, 21);
			this.cboAnimals.TabIndex = 0;
			// 
			// btnShowLegs
			// 
			this.btnShowLegs.Location = new System.Drawing.Point(102, 140);
			this.btnShowLegs.Name = "btnShowLegs";
			this.btnShowLegs.TabIndex = 1;
			this.btnShowLegs.Text = "Show Legs";
			this.btnShowLegs.Click += new System.EventHandler(this.btnShowLegs_Click);
			// 
			// fclsSwitchExample
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(292, 273);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.btnShowLegs,
																		  this.cboAnimals});
			this.Name = "fclsSwitchExample";
			this.Text = "Switch Example";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new fclsSwitchExample());
		}

		private void btnShowLegs_Click(object sender, System.EventArgs e)
		{
			switch (cboAnimals.Text)
			{
				case "Bird":
					MessageBox.Show("The animal has 2 legs.");
					break;
				case "Dog":
					// Notice there is no code here to execute.
				case "Cat":
					MessageBox.Show("The animal has 4 legs.");
					break;
				case "Snake":
					MessageBox.Show("The animal has no legs.");
					break;
				case "Centipede":
					MessageBox.Show("The animal has 100 legs.");
					break;
				default:
					MessageBox.Show("You did not select from the list!");
					break;
			}

		}
	}
}