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 WindowsFormsApplication2
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void label2_Click(object sender, EventArgs e)
{
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void label3_Click(object sender, EventArgs e)
{
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void button3_Click(object sender, EventArgs e)
{
Double a = Double.Parse(textBox1.Text);
Double b = Double.Parse(textBox2.Text);
double c = a * b;
label2.Text = c.ToString();
}
private void button1_Click(object sender, EventArgs e)
{
Double a = Double.Parse(textBox1.Text);
Double b = Double.Parse(textBox2.Text);
double c = a + b;
label2.Text = c.ToString();
}
private void button2_Click(object sender, EventArgs e)
{
Double a = Double.Parse(textBox1.Text);
Double b = Double.Parse(textBox2.Text);
double c = a - b;
label2.Text = c.ToString();
}
private void button4_Click(object sender, EventArgs e)
{
Double a = Double.Parse(textBox1.Text);
Double b = Double.Parse(textBox2.Text);
double c = a / b;
label2.Text = c.ToString();
}
}
}
