form1.cs

Sams Teach Yourself C# Web Programming in 21 Days source codes.

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

namespace ForNextExample
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label lblMeter;
		private System.Windows.Forms.Button btnForNext;
		private System.Windows.Forms.Button btnDoLoop;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// 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.lblMeter = new System.Windows.Forms.Label();
			this.btnForNext = new System.Windows.Forms.Button();
			this.btnDoLoop = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// lblMeter
			// 
			this.lblMeter.BackColor = System.Drawing.Color.Blue;
			this.lblMeter.Location = new System.Drawing.Point(100, 100);
			this.lblMeter.Name = "lblMeter";
			this.lblMeter.Size = new System.Drawing.Size(100, 17);
			this.lblMeter.TabIndex = 0;
			// 
			// btnForNext
			// 
			this.btnForNext.Location = new System.Drawing.Point(88, 125);
			this.btnForNext.Name = "btnForNext";
			this.btnForNext.Size = new System.Drawing.Size(125, 23);
			this.btnForNext.TabIndex = 1;
			this.btnForNext.Text = "Run a For Loop";
			this.btnForNext.Click += new System.EventHandler(this.btnForNext_Click);
			// 
			// btnDoLoop
			// 
			this.btnDoLoop.Location = new System.Drawing.Point(88, 160);
			this.btnDoLoop.Name = "btnDoLoop";
			this.btnDoLoop.Size = new System.Drawing.Size(125, 23);
			this.btnDoLoop.TabIndex = 2;
			this.btnDoLoop.Text = "Run a Do Loop";
			this.btnDoLoop.Click += new System.EventHandler(this.btnDoLoop_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(292, 266);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.btnDoLoop,
																		  this.btnForNext,
																		  this.lblMeter});
			this.Name = "Form1";
			this.Text = "For Statement Example";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void btnForNext_Click(object sender, System.EventArgs e)
		{
			for (int intLabelWidth=1; intLabelWidth<=100; intLabelWidth++)
			{
				lblMeter.Width = intLabelWidth;
				lblMeter.Refresh();
				for (long lngPauseCounter=1; lngPauseCounter<=600000; lngPauseCounter++);
			}

		}

		private void btnDoLoop_Click(object sender, System.EventArgs e)
		{
			int intLabelWidth=1;

			while (intLabelWidth != 100)
			{
				lblMeter.Width = intLabelWidth;
				lblMeter.Refresh();
				intLabelWidth++;
				for (long lngPauseCounter=1; lngPauseCounter<=600000; lngPauseCounter++);
			}

		}
	}
}