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 WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
double x, y;
string z;
private void Form1_Load(object sender, EventArgs e)
{
z = " ";
}
private void tus2_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0")
textBox1.Text = "2";
else
textBox1.Text = textBox1.Text + "2";
}
private void tus3_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0")
textBox1.Text = "3";
else
textBox1.Text = textBox1.Text + "3";
}
private void tus4_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0")
textBox1.Text = "4";
else
textBox1.Text = textBox1.Text + "4";
}
private void tus5_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0")
textBox1.Text = "5";
else
textBox1.Text = textBox1.Text + "5";
}
private void tus6_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0")
textBox1.Text = "6";
else
textBox1.Text = textBox1.Text + "6";
}
private void tus7_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0")
textBox1.Text = "7";
else
textBox1.Text = textBox1.Text + "7";
}
private void tus8_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0")
textBox1.Text = "8";
else
textBox1.Text = textBox1.Text + "8";
}
private void tus9_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0")
textBox1.Text = "9";
else
textBox1.Text = textBox1.Text + "9";
}
private void button5_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0")
textBox1.Text = "";
else
textBox1.Text = textBox1.Text + "0";
}
private void button1_Click(object sender, EventArgs e)
{
x = Convert.ToDouble(textBox1.Text);
z = "+";
textBox1.Text = " ";
}
private void button2_Click(object sender, EventArgs e)
{
x = Convert.ToDouble(textBox1.Text);
z = "-";
textBox1.Text = " ";
}
private void button3_Click(object sender, EventArgs e)
{
x = Convert.ToDouble(textBox1.Text);
z = "/";
textBox1.Text = " ";
}
private void button4_Click(object sender, EventArgs e)
{
x = Convert.ToDouble(textBox1.Text);
z = "*";
textBox1.Text = " ";
}
private void return1_Click(object sender, EventArgs e)
{
y = Convert.ToDouble(textBox1.Text);
if (z == "+")
{
textBox1.Text = Convert.ToString(x + y);
}
if (z == "-")
{
textBox1.Text = Convert.ToString(x - y);
}
if (z == "*")
{
textBox1.Text = Convert.ToString(x * y);
}
if (z == "/")
{
textBox1.Text = Convert.ToString(x / y);
}
}
private void button8_Click(object sender, EventArgs e)
{
x = 0;
y = 0;
z = "";
textBox1.Text = "0";
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void button6_Click(object sender, EventArgs e)
{
}
private void tus1_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0")
textBox1.Text = "1";
else
textBox1.Text = textBox1.Text + "1";
}
}
}
