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

namespace april25_1
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.TextBox oldStr;
		private System.Windows.Forms.TextBox reverseStr;
		/// <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.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.oldStr = new System.Windows.Forms.TextBox();
			this.reverseStr = new System.Windows.Forms.TextBox();
			this.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(24, 32);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(88, 24);
			this.label1.TabIndex = 0;
			this.label1.Text = "Input a string:";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(24, 72);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(88, 24);
			this.label2.TabIndex = 1;
			this.label2.Text = "Reversed string:";
			// 
			// oldStr
			// 
			this.oldStr.Location = new System.Drawing.Point(136, 32);
			this.oldStr.Name = "oldStr";
			this.oldStr.Size = new System.Drawing.Size(104, 20);
			this.oldStr.TabIndex = 2;
			this.oldStr.Text = "";
			// 
			// reverseStr
			// 
			this.reverseStr.Location = new System.Drawing.Point(136, 64);
			this.reverseStr.Name = "reverseStr";
			this.reverseStr.Size = new System.Drawing.Size(104, 20);
			this.reverseStr.TabIndex = 3;
			this.reverseStr.Text = "";
			this.reverseStr.TextChanged += new System.EventHandler(this.textBox2_TextChanged);
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(32, 128);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(72, 24);
			this.button1.TabIndex = 4;
			this.button1.Text = "Reverse";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(184, 128);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(72, 24);
			this.button2.TabIndex = 5;
			this.button2.Text = "Quit";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(312, 196);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.reverseStr);
			this.Controls.Add(this.oldStr);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.label1);
			this.Name = "Form1";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "Form1";
			this.Load += new System.EventHandler(this.Form1_Load);
			this.ResumeLayout(false);

		}
		#endregion

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

		private void Form1_Load(object sender, System.EventArgs e)
		{
		
		}

		private void textBox2_TextChanged(object sender, System.EventArgs e)
		{
		
		}

		private void button1_Click(object sender, System.EventArgs e)
		{		
			int n = oldStr.Text.Length;
			char[] s = new char[n];
			for(int i = 0; i<n; i++)
			{
				s[i] = oldStr.Text[n-i-1];
			}			
			reverseStr.Text = new string(s);
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			this.Close();
		}
	}
}