Palindrome in C# GUI

Adarsh Acharya
May 15, 2012
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You can enter any word, number, sentence(without punctuation marks) and this will give the output yes or no.

//my palindrome code
//please enter the input sentence without any symbols like ,.? etc
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace Palindrome
{
   public partial class Form1 : Form
   {
   int i, startchar, lastchar;
   public Form1()
   {
   InitializeComponent();
   }
   private void button1_Click(object sender, EventArgs e)
   {
   //So that everything in lower case
   //this will avoid the error of showing Racecar as not a palindrome as r is diff from R to C#
   //RaCeCar is same as RaceCar
   string low = textBox1.Text.ToLower()
   //so that panlindrome sentence can also be chaecked
   //this will remove space in a sentence Race car int racecar
   low = low.Replace(" ", "");
            //char[] character = new char[anynumber/limit]
            char[] character = new char[100];
   character = low.ToCharArray();
   startchar = 0
   lastchar = character.Length - 1;
   while (startchar < lastchar)
   {
   if (character[startchar] == character[lastchar])
   {
   startchar++;
   lastchar--;
   }
   else
   {
   //u can also use messagebox
   label1.Visible = true;
   label1.Text = "It is not a Palindrome";
   button1.Text = "Try Again";
   textBox1.Focus()
   //so that the application does not get closed after braking the loop and u can try again
   //this is used in the if statement after breaking the loop
   i = 2;
   break;
   }
   }
   if (i < 2)
   {
   label1.Visible = true;
   label1.Text = "It is a Palindrome";
                button1.Text = "Try Another";
   textBox1.Focus();
   }
   else
   {
   //the value is reset to 0
   //or else the application will get stucked
   i = 0;
   }
   }
   }
}