Create Calculator using Windows Form
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace calciwindowsapplication
{
public partial class Form1 : Form
{
double result = 0;
string opration="";
bool dd=false;
public Form1()
{
InitializeComponent();
}
private void button18_Click(object sender, EventArgs e)
{
Button but = (Button)sender;
opration = but.Text;
result = double.Parse(textboxresult.Text);
operationlabel.Text = result + " " + opration;
// textboxresult.Text = result + " " + opration;
dd = true;
}
private void button9_Click(object sender, EventArgs e)
{
textboxresult.Text = "0";
result = 0;
}
private void button14_Click(object sender, EventArgs e)
{
textboxresult.Text = "0";
}
private void button24_Click(object sender, EventArgs e)
{
switch (opration)
{
case "+":
textboxresult.Text = (result + double.Parse(textboxresult.Text)).ToString();
break;
case "-":
textboxresult.Text = (result - double.Parse(textboxresult.Text)).ToString();
break;
case "*":
textboxresult.Text = (result * double.Parse(textboxresult.Text)).ToString();
break;
case "/":
textboxresult.Text = (result / double.Parse(textboxresult.Text)).ToString();
break;
default:
break;
}
}
private void button13_Click(object sender, EventArgs e)
{
Button but = (Button)sender;
opration = but.Text;
result = double.Parse(textboxresult.Text);
operationlabel.Text = result + " " + opration;
//dd = true;
}
private void button7_Click(object sender, EventArgs e)
{
if ((textboxresult.Text == "0") || (dd))
textboxresult.Clear();
dd = false;
textboxresult.Text = textboxresult.Text + "6";
}
private void button20_Click(object sender, EventArgs e)
{
if ((textboxresult.Text == "0") || (dd))
textboxresult.Clear();
dd = false;
//Button but = (Button)sender;
//textboxresult.Text = textboxresult.Text + but.Text;
textboxresult.Text = textboxresult.Text + "1";
}
private void button17_Click(object sender, EventArgs e)
{
if ((textboxresult.Text == "0") || (dd))
textboxresult.Clear();
dd = false;
textboxresult.Text = textboxresult.Text + "3";
}
private void button16_Click(object sender, EventArgs e)
{
if ((textboxresult.Text == "0") || (dd))
textboxresult.Clear();
dd = false;
textboxresult.Text = textboxresult.Text + "2";
}
private void button10_Click(object sender, EventArgs e)
{
if ((textboxresult.Text == "0") || (dd))
textboxresult.Clear();
dd = false;
textboxresult.Text = textboxresult.Text + "4";
}
private void button6_Click(object sender, EventArgs e)
{
if ((textboxresult.Text == "0") || (dd))
textboxresult.Clear();
dd = false;
textboxresult.Text = textboxresult.Text + "5";
}
private void button15_Click(object sender, EventArgs e)
{
if ((textboxresult.Text == "0") || (dd))
textboxresult.Clear();
dd = false;
textboxresult.Text = textboxresult.Text + "7";
}
private void button11_Click(object sender, EventArgs e)
{
if ((textboxresult.Text == "0") || (dd))
textboxresult.Clear();
dd = false;
textboxresult.Text = textboxresult.Text + "8";
}
private void button12_Click(object sender, EventArgs e)
{
if ((textboxresult.Text == "0") || (dd))
textboxresult.Clear();
dd = false;
textboxresult.Text = textboxresult.Text + "9";
}
private void button25_Click(object sender, EventArgs e)
{
if ((textboxresult.Text == "0") || (dd))
textboxresult.Clear();
dd = false;
textboxresult.Text = textboxresult.Text + "0";
}
private void button22_Click(object sender, EventArgs e)
{
//if ((textboxresult.Text == "0") || (dd))
// textboxresult.Clear();
//dd = false;
if (textboxresult.Text.Contains("."))
{
textboxresult.Text = textboxresult.Text;
}
else
{
textboxresult.Text = textboxresult.Text + ".";
}
}
private void Form1_Load(object sender, EventArgs e)
{
}
}
}
form design
here is output
EmoticonEmoticon