// Asal Sayilari Bul | Ali AKYILDIRIM | www.aliakyildirim.com
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;
// Asal Sayilari Bul | Ali AKYILDIRIM | www.aliakyildirim.com
namespace AsalSayilaiiBul
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            txtSayi.Focus();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                int sayi = Convert.ToInt32(txtSayi.Text);
                for (int i = 2; i 
                {
                    bool asalmi = true;
                    for (int j = 2; j 
                    {
                        if (i % j == 0)
                        {
                            asalmi = false;
                            break;
                        }
                    }
                    if (asalmi)
                    {
                        listBox1.Items.Add(i);
                        button1.Enabled = false;
                        btnYenile.Enabled = true;
                        txtSayi.Focus();
                        lblAdet.Text = "’1’ ile " + "’" + txtSayi.Text.ToString() + "’" + " Arasinda;\n" +
                        listBox1.Items.Count.ToString() + " Tane ASAL Sayi Vardir";
                        txtSayi.Enabled = false;
                    }
                }
            }
            catch (Exception)
            {
                MessageBox.Show("Sayisal Bir Deger Girmediniz..!", "Bilgi | www.aliakyildirim.com");
                txtSayi.Focus();
            }
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            btnYenile.Enabled = false;
            txtSayi.Focus();
        }
        private void btnYenile_Click(object sender, EventArgs e)
        {
            button1.Enabled = true;
            btnYenile.Enabled = false;
            listBox1.Items.Clear();
            txtSayi.Clear();
            lblAdet.Text = string.Empty;
            txtSayi.Enabled = true;
            txtSayi.Focus();
        }
        private void gbAliAKYILDIRIM_Enter(object sender, EventArgs e)
        {
            txtSayi.Focus();
        }
    }
}
// Asal Sayilari Bul | Ali AKYILDIRIM | www.aliakyildirim.com