harshityadav95
1/24/2018 - 12:04 PM
code.cs
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;
using Infragistics.Win.Misc;
namespace calculatorApp
{
public partial class Form1 : Form
{
public string _inputmainBox=null;
public double _value1, _value2;
public double _flag=0;
public string _operand = null;
public Form1()
{
InitializeComponent();
inputBoxMain.Select();
}
/// <summary>
/// A single Function to handel all button press events from UI
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void btnClick(object sender, EventArgs e)
{
UltraButton button = sender as UltraButton;
try
{
try
{
int a = Convert.ToInt32(button.Text);
if (a >= 0 && a <= 9)
{
inputBoxMain.AppendText(button.Text);
}
}
catch (Exception)
{
if(button.Text=="+" || button.Text=="-" || button.Text=="*" || button.Text=="/" || button.Text=="%" )
{
ValueProcessor(button.Text);
_flag += 1;
}
else if (button.Text=="±" || button.Text=="√" || button.Text=="1/x")
{
ValueProcessor(button.Text);
_flag = 2;
ValueProcessor(button.Text);
}
else if(button.Text==".")
{
inputBoxMain.AppendText(".");
}
else if(button.Text=="=")
{
if (_flag != 0)
{
ValueProcessor(button.Text);
}
}
}
}
catch (Exception)
{
inputBoxMain.Text = "Invalid Input";
}
}
/// <summary>
/// Analysing the Input from the Keyboard for particular key combinations'
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ultraTextEditor1_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == '+' || e.KeyChar == '-' || e.KeyChar == '*' || e.KeyChar == '/' || e.KeyChar == '%')
{
ValueProcessor(Convert.ToString(e.KeyChar));
_flag += 1;
e.Handled = true;
}
else if (e.KeyChar == '=' || e.KeyChar == '\r')
{
if (_flag != 0)
{
ValueProcessor("=");
}
e.Handled = true;
}
}
/// <summary>
/// The main Calculation engine which stores input in variables and display result
/// </summary>
/// <param name="sim"></param>
public void ValueProcessor(string sim)
{
try
{
if (_flag == 0)
{
_value1 = Convert.ToDouble(inputBoxMain.Text);
if (sim != "=" )
{
if (sim != "±" && sim != "√" && sim != "1/x")
{
inputBoxMain.AppendText(sim);
}
_operand = sim;
}
if (sim != "±")
{
overBox.Text = inputBoxMain.Text;
inputBoxMain.Clear();
}
}
else if (_flag == 1)
{
_value2 = Convert.ToDouble(inputBoxMain.Text);
_flag += 1;
}
}
catch (Exception)
{
inputBoxMain.Text = "Invalid Input";
}
if (_flag == 2)
{
if (_operand != null)
{
operations ob = new operations();
try
{
try
{
double temp = ob.engine(_operand,_value1, _value2);
inputBoxMain.Text = Convert.ToString(temp);
overBox.Text = string.Empty;
}
catch (DivideByZeroException)
{
inputBoxMain.Text = "Zero Divison";
}
if (sim != "=" && sim != "±" && sim != "√" && sim != "1/x")
{
_value1 = Convert.ToDouble(inputBoxMain.Text);
inputBoxMain.AppendText(sim);
_operand = sim;
overBox.Text = inputBoxMain.Text;
inputBoxMain.Clear();
_flag =0;
_value2 = 0;
}
else
{
_flag = 0;
_value2 = 0;
_operand = null;
}
}
catch (Exception)
{
inputBoxMain.Text = "Engine Failed";
}
}
}
}
/// <summary>
/// Complete clear button function
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void clear_Click(object sender, EventArgs e)
{
inputBoxMain.Text = string.Empty;
overBox.Text = string.Empty;
_flag = 0;
_value2 = 0;
_value1 = 0;
_operand = null;
}
/// <summary>
/// CE Button click method
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void operatorClearLast_Click(object sender, EventArgs e)
{
inputBoxMain.Text = string.Empty;
}
/// <summary>
/// Backspace Key from Buttons UI
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Backspacekey_Click(object sender, EventArgs e)
{
string temp = inputBoxMain.Text;
temp = temp.Remove(temp.Length - 1);
inputBoxMain.Text = temp;
}
}
}