using System;
using System.Collections.Generic;
using
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
private string op;
private string str1, str2;
private int str3;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
textBox1.Text += "1";
}
private void button2_Click(object sender, EventArgs e)
{
textBox1.Text += "2";
}
private void button3_Click(object sender, EventArgs e)
{
textBox1.Text += "3";
}
private void button4_Click(object sender, EventArgs e)
{
textBox1.Text += "4";
}
private void button5_Click(object sender, EventArgs e)
{
textBox1.Text += "5";
}
private void button6_Click(object sender, EventArgs e)
{
textBox1.Text += "6";
}
private void button7_Click(object sender, EventArgs e)
{
textBox1.Text += "7";
}
private void button8_Click(object sender, EventArgs e)
{
textBox1.Text += "8";
}
private void button9_Click(object sender, EventArgs e)
{
textBox1.Text += "9";
}
private void button10_Click(object sender, EventArgs e)
{
textBox1.Text += "0";
}
private void button15_Click(object sender, EventArgs e)
{
textBox2.Text = textBox1.Text;
str1 = textBox1.Text;
textBox2.Text += "%";
textBox1.Clear();
op = "%";
}
private void button11_Click(object sender, EventArgs e)
{
textBox2.Text = textBox1.Text;
str1 = textBox1.Text;
textBox2.Text += "+";
textBox1.Clear();
op = "+";
}
private void button12_Click(object sender, EventArgs e)
{
textBox2.Text = textBox1.Text;
str1 = textBox1.Text;
textBox2.Text += "-";
textBox1.Clear();
op = "-";
}
private void button13_Click(object sender, EventArgs e)
{
textBox2.Text = textBox1.Text;
str1 = textBox1.Text;
textBox2.Text += "*";
textBox1.Clear();
op = "*";
}
private void button14_Click(object sender, EventArgs e)
{
textBox2.Text = textBox1.Text;
str1 = textBox1.Text;
textBox2.Text += "/";
textBox1.Clear();
op = "/";
}
private void button16_Click(object sender, EventArgs e)
{
str2 = textBox1.Text;
if (op.Trim() == "%")
{
str3 = Convert.ToInt32(str1) % Convert.ToInt32(str2);
textBox2.Text += str2;
textBox2.Text += "=";
textBox1.Text = str3.ToString();
}
if (op.Trim() == "+")
{
str3 = Convert.ToInt32(str1) + Convert.ToInt32(str2);
textBox2.Text += str2;
textBox2.Text += "=";
textBox1.Text = str3.ToString();
}
if (op.Trim() == "-")
{
str3 = Convert.ToInt32(str1) - Convert.ToInt32(str2);
textBox2.Text += str2;
textBox2.Text += "=";
textBox1.Text = str3.ToString();
}
if (op.Trim() == "*")
{
str3 = Convert.ToInt32(str1) * Convert.ToInt32(str2);
textBox2.Text += str2;
textBox2.Text += "=";
textBox1.Text = str3.ToString();
}
if (op.Trim() == "/")
{
str3 = Convert.ToInt32(str1) / Convert.ToInt32(str2);
textBox2.Text += str2;
textBox2.Text += "=";
textBox1.Text = str3.ToString();
}
}
private void button17_Click(object sender, EventArgs e)
{
textBox1.Clear();
textBox2.Clear();
}
private void button18_Click(object sender, EventArgs e)
{
textBox1.Clear();
}
}
}