Membuat Aplikasi dengan .Net Framework

 1. Membuat Kalkulator Sederhana 

1.1. Membuat Project Window Form di Visual Studio

          Klik new project, pilih Windows Forms App

1.2. Konfigurasi Project

1.3. Membuat Desain Form

Buat desain form dengan label, textbox dan button

1.4. Buat Fungsi

	using System;
	using System.Collections.Generic;
	using System.ComponentModel;
	using System.Data;
	using System.Drawing;
	using System.Linq;
	using System.Text;
	using System.Threading.Tasks;
	using System.Windows.Forms;
	namespace Kalkulator
	{
	public partial class Form1 : Form
	{
	public Form1()
	{
	InitializeComponent();
	}
	private void Form1_Load(object sender, EventArgs e)
	{
	textBox1.Clear();
	textBox2.Clear();
	lblHasil.Text = "";
	}
	private void button1_Click(object sender, EventArgs e)
	{
	if (string.IsNullOrEmpty(textBox1.Text) || string.IsNullOrEmpty(textBox2.Text))
	{
	MessageBox.Show("Masukkan Bilangan Terlebih Dahulu");
	}
	else
	{
	int a, b, c;
	a = int.Parse(this.textBox1.Text);
	b = int.Parse(this.textBox2.Text);
	c = a + b;
	this.lblHasil.Text = c.ToString();
	}
	}
	private void button2_Click(object sender, EventArgs e)
	{
	if (string.IsNullOrEmpty(textBox1.Text) || string.IsNullOrEmpty(textBox2.Text))
	{
	MessageBox.Show("Masukkan Bilangan Terlebih Dahulu");
	}
	else
	{
	int a, b, c;
	a = int.Parse(this.textBox1.Text);
	b = int.Parse(this.textBox2.Text);
	c = a - b;
	this.lblHasil.Text = c.ToString();
	}
	}
	private void button3_Click(object sender, EventArgs e)
	{
	if (string.IsNullOrEmpty(textBox1.Text) || string.IsNullOrEmpty(textBox2.Text))
	{
	MessageBox.Show("Masukkan Bilangan Terlebih Dahulu");
	}
	else
	{
	int a, b, c;
	a = int.Parse(this.textBox1.Text);
	b = int.Parse(this.textBox2.Text);
	c = a * b;
	this.lblHasil.Text = c.ToString();
	}
	}
	private void button4_Click(object sender, EventArgs e)
	{
	if (string.IsNullOrEmpty(textBox1.Text) || string.IsNullOrEmpty(textBox2.Text))
	{
	MessageBox.Show("Masukkan Bilangan Terlebih Dahulu");
	}
	else
	{
	int a, b, c;
	a = int.Parse(this.textBox1.Text);
	b = int.Parse(this.textBox2.Text);
	c = a / b;
	this.lblHasil.Text = c.ToString();
	}
	}
	private void button5_Click(object sender, EventArgs e)
	{
	textBox1.Clear();
	textBox2.Clear();
	lblHasil.Text = "";
	}
	}
	}
	{"mode":"full","isActive":false}

view raw form1.cs hosted with ❤ by GitHub

1.5 Menjalankan Program 

2. Membuat Currency Converter

2.1. Membuat Project Window Form di Visual Studio

          Klik new project, pilih Windows Forms App

2.2. Konfigurasi Project

2.3. Membuat Desain Form

Buat desain form dengan label, textbox dan button

2.4. Buat Fungsi

	using System;
	using System.Collections.Generic;
	using System.ComponentModel;
	using System.Data;
	using System.Drawing;
	using System.Linq;
	using System.Text;
	using System.Threading.Tasks;
	using System.Windows.Forms;
	namespace Converter
	{
	public partial class Form1 : Form
	{
	public Form1()
	{
	InitializeComponent();
	}
	private void button1_Click(object sender, EventArgs e)
	{
	int i = int.Parse(this.textBox1.Text);
	if ((string)comboBox1.SelectedItem == "Indonesia(IDR)" && (string)comboBox2.SelectedItem == "Amerika(USD)")
	{
	double hasil;
	hasil = i*0.00001;
	lblResult.Text = hasil.ToString("0.00");
	}
	else if ((string)comboBox1.SelectedItem == "Indonesia(IDR)" && (string)comboBox2.SelectedItem == "Korea(KRW)")
	{
	double hasil;
	hasil = i * 0.07694;
	lblResult.Text = hasil.ToString("0.00");
	}
	else if ((string)comboBox1.SelectedItem == "Indonesia(IDR)" && (string)comboBox2.SelectedItem == "Jepang(JPY)")
	{
	double hasil;
	hasil = i * 0.00766;
	lblResult.Text = hasil.ToString("0.00");
	}
	else if ((string)comboBox1.SelectedItem == "Amerika(USD)" && (string)comboBox2.SelectedItem == "Indonesia(IDR)")
	{
	double hasil;
	hasil = i * 14560;
	lblResult.Text = hasil.ToString("0.00");
	}
	else if ((string)comboBox1.SelectedItem == "Amerika(USD)" && (string)comboBox2.SelectedItem == "Korea(KRW)")
	{
	double hasil;
	hasil = i * 1130.200;
	lblResult.Text = hasil.ToString("0.00");
	}
	else if ((string)comboBox1.SelectedItem == "Amerika(USD)" && (string)comboBox2.SelectedItem == "Jepang(JPY)")
	{
	double hasil;
	hasil = i * 110.950;
	lblResult.Text = hasil.ToString("0.00");
	}
	else if ((string)comboBox1.SelectedItem == "Korea(KRW)" && (string)comboBox2.SelectedItem == "Indonesia(IDR)")
	{
	double hasil;
	hasil = i * 12.888;
	lblResult.Text = hasil.ToString("0.00");
	}
	else if ((string)comboBox1.SelectedItem == "Korea(KRW)" && (string)comboBox2.SelectedItem == "Amerika(USD)")
	{
	double hasil;
	hasil = i * 0.00088;
	lblResult.Text = hasil.ToString("0.00");
	}
	else if ((string)comboBox1.SelectedItem == "Korea(KRW)" && (string)comboBox2.SelectedItem == "Jepang(JPY)")
	{
	double hasil;
	hasil = i * 0.09793;
	lblResult.Text = hasil.ToString("0.00");
	}
	else if ((string)comboBox1.SelectedItem == "Jepang(JPY)" && (string)comboBox2.SelectedItem == "Indonesia(IDR)")
	{
	double hasil;
	hasil = i * 131.230;
	lblResult.Text = hasil.ToString("0.00");
	}
	else if ((string)comboBox1.SelectedItem == "Jepang(JPY)" && (string)comboBox2.SelectedItem == "Amerika(USD)")
	{
	double hasil;
	hasil = i * 0.009;
	lblResult.Text = hasil.ToString("0.00");
	}
	else if ((string)comboBox1.SelectedItem == "Jepang(JPY)" && (string)comboBox2.SelectedItem == "Korea(KRW)")
	{
	double hasil;
	hasil = i * 10.186;
	lblResult.Text = hasil.ToString("0.00");
	}
	else if (comboBox1.SelectedItem == comboBox2.SelectedItem)
	{
	double hasil;
	hasil = i;
	lblResult.Text = hasil.ToString("0.00");
	}
	}
	}
	}
	{"mode":"full","isActive":false}

view raw form1.cs hosted with ❤ by GitHub

2.5 Menjalankan Program 

Source code :
Kalkulator

Currency Converter