latihan 4 daftar nilai

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 latihan_4 irfannurseha
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                double a = double.Parse(textBox1.Text);
                if (a % 2 != 1)
                    label2.Text = "BIL.Genap";
                else if (a == 0)
                {
                    label2.Text = "Bilangan Nol";
                }
                else
                {
                    label2.Text = "BIL.Ganjil";
                }


                if (a > 0)
                {
                    label3.Text = "Bilangan Positif";
                }
                else if (a == 0)
                {
                    label3.Text = "Bilangan Nol";
                }
                else
                {
                    label3.Text = "Bilangan Negatif";
                }


                for (int i = 2; i < 10; i++)
                {
                    if (a % i != 0)
                    {
                        label4.Text = "Bilangan Prima";
                    }
                    else
                    {
                        label4.Text = "Bukan Bilangan Prima";
                    }
                }


                for (int i = 1; i <= 10; i++)
                {
                    if ((a % 2 != 0) && (a % 2 != 1) && (a % 2 != -1))
                    {
                        label5.Text = "Bilangan Pecahan";
                    }
                    else
                    {
                        label5.Text = "Bilangan Bulat";
                    }
                }
                
            }

            catch (Exception)
            {

                MessageBox.Show("isikan angka bukan tulisan");


            }
        }



                    
    }
  }