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 WindowsFormsApp2
{
public partial class Form1 : Form
{
double FirstNumber;
string Operation;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0" && textBox1.Text==null)
{
textBox1.Text = "1";
}
else
{
textBox1.Text = textBox1.Text + "1";
}
}
private void button2_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0" && textBox1.Text == null)
{
textBox1.Text = "0";
}
else
{
textBox1.Text = textBox1.Text + "0";
}
}
private void button3_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0" && textBox1.Text == null)
{
textBox1.Text = "2";
}
else
{
textBox1.Text = textBox1.Text + "2";
}
}
private void button4_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0" && textBox1.Text == null)
{
textBox1.Text = "3";
}
else
{
textBox1.Text = textBox1.Text + "3";
}
}
private void button5_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0" && textBox1.Text == null)
{
textBox1.Text = "4";
}
else
{
textBox1.Text = textBox1.Text + "4";
}
}
private void button6_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0" && textBox1.Text == null)
{
textBox1.Text = "5";
}
else
{
textBox1.Text = textBox1.Text + "5";
}
}
private void button7_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0" && textBox1.Text == null)
{
textBox1.Text = "6";
}
else
{
textBox1.Text = textBox1.Text + "6";
}
}
private void button8_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0" && textBox1.Text == null)
{
textBox1.Text = "7";
}
else
{
textBox1.Text = textBox1.Text + "7";
}
}
private void button9_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0" && textBox1.Text == null)
{
textBox1.Text = "8";
}
else
{
textBox1.Text = textBox1.Text + "8";
}
}
private void button10_Click(object sender, EventArgs e)
{
if (textBox1.Text == "0" && textBox1.Text == null)
{
textBox1.Text = "9";
}
else
{
textBox1.Text = textBox1.Text + "9";
}
}
private void button11_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text + ",";
}
private void button12_Click(object sender, EventArgs e)
{
FirstNumber = Convert.ToDouble(textBox1.Text);
textBox1.Text = null;
Operation = "+";
}
private void button13_Click(object sender, EventArgs e)
{
FirstNumber = Convert.ToDouble(textBox1.Text);
textBox1.Text = null;
Operation = "-";
}
private void button14_Click(object sender, EventArgs e)
{
FirstNumber = Convert.ToDouble(textBox1.Text);
textBox1.Text = null;
Operation = "*";
}
private void button15_Click(object sender, EventArgs e)
{
FirstNumber = Convert.ToDouble(textBox1.Text);
textBox1.Text = null;
Operation = "/";
}
private void button16_Click(object sender, EventArgs e)
{
double SecondNumber;
double Result;
SecondNumber = Convert.ToDouble(textBox1.Text);
if (Operation=="+")
{
Result = (FirstNumber + SecondNumber);
textBox1.Text = Convert.ToString(Result);
FirstNumber = Result;
}
if (Operation == "-")
{
Result = (FirstNumber - SecondNumber);
textBox1.Text = Convert.ToString(Result);
FirstNumber = Result;
}
if (Operation == "*")
{
Result = (FirstNumber * SecondNumber);
textBox1.Text = Convert.ToString(Result);
FirstNumber = Result;
}
if (Operation == "/")
if(SecondNumber==0)
{
textBox1.Text = "Uygulanamaz";
}
else
{
Result = (FirstNumber / SecondNumber);
textBox1.Text = Convert.ToString(Result);
FirstNumber = Result;
}
}
private void button17_Click(object sender, EventArgs e)
{
textBox1.Text = null;
}
}
}