If you want to build simple calculator in c# programming language then, You are in the right place.
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 Moder_Machine_Calc
{
public partial class Form1 : Form
{
//Global Variables
string number1;
string number2;
string op;
string input;
int countRepeat;
Calculator obj = new Calculator(); //calculator object is created
public Form1()
{
InitializeComponent();
}
private void number_Click(object sender, EventArgs e)
{
if (((Button)sender).Text == "+/-")
{
input = (-Convert.ToDouble(txtDisplay.Text)).ToString();
}
else
{
input += ((Button)sender).Text; //Type cast ..button object
txtDisplay.Text = input;
}
}
private void Operator_Click(object sender, EventArgs e)
{
countRepeat = 0;
number1 = input;
op = ((Button)sender).Text;
input = "";
txtDisplay.Text = "";
op = ((Button)sender).Text;
if (op == "Sqrt")
{
obj.Number1 = Convert.ToDouble(number1);
if (op == "Sqrt")
{
obj.squaroot();
txtDisplay.Text = obj.Result.ToString();
}
}
}
private void btnEqual_Click(object sender, EventArgs e)
{
countRepeat++;
if (countRepeat == 1)
{
number2 = txtDisplay.Text;
input = "";
}
else if(countRepeat >1)
{
number1 = txtDisplay.Text;
}
obj.Number1 = Convert.ToDouble(number1);
obj.Number2 = Convert.ToDouble(number2);
obj.Op = Convert.ToChar(op);
if (op == "+")
{
obj.Add();
input = "";
txtDisplay.Text = "";
}
else if (op == "-")
{
obj.Subtract();
}
else if (op == "*")
{
obj.product();
}
else if (op == "/")
{
obj.divide();
}
txtDisplay.Text = obj.Result.ToString();
}
private void btnClear_Click(object sender, EventArgs e)
{//clear
txtDisplay.Clear();
number1 ="";
number2 = "";
input = "";
}
private void btnBack_Click(object sender, EventArgs e)
{
if (txtDisplay.Text.Length != 0)
{
input = txtDisplay.Text.Remove(txtDisplay.Text.Length - 1);
}
else
{
input = "";
}
txtDisplay.Text = input;
}
private void btnFrac_Click(object sender, EventArgs e)
{
number1 = input;
op = ((Button)sender).Text;
if (op == "1/x")
{
obj.Number1 = Convert.ToDouble(number1);
if (op == "1/x")
{
obj.reciprocal();
txtDisplay.Text = obj.Result.ToString();
}
}
}
}
}
Designer form :
namespace Moder_Machine_Calc
{
partial class Form1
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1));
this.txtDisplay = new System.Windows.Forms.TextBox();
this.btnBack = new System.Windows.Forms.Button();
this.btnClear = new System.Windows.Forms.Button();
this.btn7 = new System.Windows.Forms.Button();
this.btn8 = new System.Windows.Forms.Button();
this.btn9 = new System.Windows.Forms.Button();
this.btn4 = new System.Windows.Forms.Button();
this.btn5 = new System.Windows.Forms.Button();
this.btn6 = new System.Windows.Forms.Button();
this.btn1 = new System.Windows.Forms.Button();
this.btn2 = new System.Windows.Forms.Button();
this.btn3 = new System.Windows.Forms.Button();
this.btn0 = new System.Windows.Forms.Button();
this.button13 = new System.Windows.Forms.Button();
this.button14 = new System.Windows.Forms.Button();
this.btnDiv = new System.Windows.Forms.Button();
this.btnPro = new System.Windows.Forms.Button();
this.btnSub = new System.Windows.Forms.Button();
this.btnAdd = new System.Windows.Forms.Button();
this.btnSqrt = new System.Windows.Forms.Button();
this.btnFrac = new System.Windows.Forms.Button();
this.btnEqual = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// txtDisplay
//
this.txtDisplay.BackColor = System.Drawing.SystemColors.AppWorkspace;
this.txtDisplay.Font = new System.Drawing.Font("Microsoft Sans Serif", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.txtDisplay.ForeColor = System.Drawing.SystemColors.InfoText;
this.txtDisplay.Location = new System.Drawing.Point(17, 16);
this.txtDisplay.Margin = new System.Windows.Forms.Padding(4);
this.txtDisplay.Multiline = true;
this.txtDisplay.Name = "txtDisplay";
this.txtDisplay.ReadOnly = true;
this.txtDisplay.Size = new System.Drawing.Size(327, 44);
this.txtDisplay.TabIndex = 0;
this.txtDisplay.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;
//
// btnBack
//
this.btnBack.ForeColor = System.Drawing.Color.Red;
this.btnBack.Location = new System.Drawing.Point(17, 68);
this.btnBack.Margin = new System.Windows.Forms.Padding(4);
this.btnBack.Name = "btnBack";
this.btnBack.Size = new System.Drawing.Size(115, 37);
this.btnBack.TabIndex = 1;
this.btnBack.Text = "Back";
this.btnBack.UseVisualStyleBackColor = true;
this.btnBack.Click += new System.EventHandler(this.btnBack_Click);
//
// btnClear
//
this.btnClear.Font = new System.Drawing.Font("Microsoft Sans Serif", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnClear.ForeColor = System.Drawing.Color.Red;
this.btnClear.Location = new System.Drawing.Point(231, 68);
this.btnClear.Margin = new System.Windows.Forms.Padding(4);
this.btnClear.Name = "btnClear";
this.btnClear.Size = new System.Drawing.Size(115, 37);
this.btnClear.TabIndex = 2;
this.btnClear.Text = "Clear";
this.btnClear.UseVisualStyleBackColor = true;
this.btnClear.Click += new System.EventHandler(this.btnClear_Click);
//
// btn7
//
this.btn7.Location = new System.Drawing.Point(17, 133);
this.btn7.Name = "btn7";
this.btn7.Size = new System.Drawing.Size(47, 39);
this.btn7.TabIndex = 3;
this.btn7.Text = "7";
this.btn7.UseVisualStyleBackColor = true;
this.btn7.Click += new System.EventHandler(this.number_Click);
//
// btn8
//
this.btn8.Location = new System.Drawing.Point(85, 133);
this.btn8.Name = "btn8";
this.btn8.Size = new System.Drawing.Size(47, 39);
this.btn8.TabIndex = 4;
this.btn8.Text = "8";
this.btn8.UseVisualStyleBackColor = true;
this.btn8.Click += new System.EventHandler(this.number_Click);
//
// btn9
//
this.btn9.Location = new System.Drawing.Point(147, 133);
this.btn9.Name = "btn9";
this.btn9.Size = new System.Drawing.Size(47, 39);
this.btn9.TabIndex = 5;
this.btn9.Text = "9";
this.btn9.UseVisualStyleBackColor = true;
this.btn9.Click += new System.EventHandler(this.number_Click);
//
// btn4
//
this.btn4.Location = new System.Drawing.Point(17, 178);
this.btn4.Name = "btn4";
this.btn4.Size = new System.Drawing.Size(47, 39);
this.btn4.TabIndex = 6;
this.btn4.Text = "4";
this.btn4.UseVisualStyleBackColor = true;
this.btn4.Click += new System.EventHandler(this.number_Click);
//
// btn5
//
this.btn5.Location = new System.Drawing.Point(85, 178);
this.btn5.Name = "btn5";
this.btn5.Size = new System.Drawing.Size(47, 39);
this.btn5.TabIndex = 7;
this.btn5.Text = "5";
this.btn5.UseVisualStyleBackColor = true;
this.btn5.Click += new System.EventHandler(this.number_Click);
//
// btn6
//
this.btn6.Location = new System.Drawing.Point(147, 178);
this.btn6.Name = "btn6";
this.btn6.Size = new System.Drawing.Size(47, 39);
this.btn6.TabIndex = 8;
this.btn6.Text = "6";
this.btn6.UseVisualStyleBackColor = true;
this.btn6.Click += new System.EventHandler(this.number_Click);
//
// btn1
//
this.btn1.Location = new System.Drawing.Point(17, 223);
this.btn1.Name = "btn1";
this.btn1.Size = new System.Drawing.Size(47, 39);
this.btn1.TabIndex = 9;
this.btn1.Text = "1";
this.btn1.UseVisualStyleBackColor = true;
this.btn1.Click += new System.EventHandler(this.number_Click);
//
// btn2
//
this.btn2.Location = new System.Drawing.Point(85, 223);
this.btn2.Name = "btn2";
this.btn2.Size = new System.Drawing.Size(47, 39);
this.btn2.TabIndex = 10;
this.btn2.Text = "2";
this.btn2.UseVisualStyleBackColor = true;
this.btn2.Click += new System.EventHandler(this.number_Click);
//
// btn3
//
this.btn3.Location = new System.Drawing.Point(147, 223);
this.btn3.Name = "btn3";
this.btn3.Size = new System.Drawing.Size(47, 39);
this.btn3.TabIndex = 11;
this.btn3.Text = "3";
this.btn3.UseVisualStyleBackColor = true;
this.btn3.Click += new System.EventHandler(this.number_Click);
//
// btn0
//
this.btn0.Location = new System.Drawing.Point(17, 270);
this.btn0.Name = "btn0";
this.btn0.Size = new System.Drawing.Size(47, 39);
this.btn0.TabIndex = 12;
this.btn0.Text = "0";
this.btn0.UseVisualStyleBackColor = true;
this.btn0.Click += new System.EventHandler(this.number_Click);
//
// button13
//
this.button13.Location = new System.Drawing.Point(85, 270);
this.button13.Name = "button13";
this.button13.Size = new System.Drawing.Size(47, 39);
this.button13.TabIndex = 13;
this.button13.Text = "+/-";
this.button13.UseVisualStyleBackColor = true;
this.button13.Click += new System.EventHandler(this.number_Click);
//
// button14
//
this.button14.Font = new System.Drawing.Font("Microsoft Sans Serif", 18F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.button14.Location = new System.Drawing.Point(147, 270);
this.button14.Name = "button14";
this.button14.Size = new System.Drawing.Size(47, 39);
this.button14.TabIndex = 14;
this.button14.Text = ".";
this.button14.UseVisualStyleBackColor = true;
this.button14.Click += new System.EventHandler(this.number_Click);
//
// btnDiv
//
this.btnDiv.BackColor = System.Drawing.SystemColors.Control;
this.btnDiv.Font = new System.Drawing.Font("Microsoft Sans Serif", 15.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnDiv.ForeColor = System.Drawing.Color.Red;
this.btnDiv.Location = new System.Drawing.Point(222, 133);
this.btnDiv.Name = "btnDiv";
this.btnDiv.Size = new System.Drawing.Size(47, 39);
this.btnDiv.TabIndex = 15;
this.btnDiv.Text = "/";
this.btnDiv.UseVisualStyleBackColor = false;
this.btnDiv.Click += new System.EventHandler(this.Operator_Click);
//
// btnPro
//
this.btnPro.Font = new System.Drawing.Font("Microsoft Sans Serif", 18F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnPro.ForeColor = System.Drawing.Color.Red;
this.btnPro.Location = new System.Drawing.Point(222, 178);
this.btnPro.Name = "btnPro";
this.btnPro.Size = new System.Drawing.Size(47, 39);
this.btnPro.TabIndex = 16;
this.btnPro.Text = "*";
this.btnPro.UseVisualStyleBackColor = true;
this.btnPro.Click += new System.EventHandler(this.Operator_Click);
//
// btnSub
//
this.btnSub.Font = new System.Drawing.Font("Microsoft Sans Serif", 15.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnSub.ForeColor = System.Drawing.Color.Red;
this.btnSub.Location = new System.Drawing.Point(222, 223);
this.btnSub.Name = "btnSub";
this.btnSub.Size = new System.Drawing.Size(47, 39);
this.btnSub.TabIndex = 17;
this.btnSub.Text = "-";
this.btnSub.UseVisualStyleBackColor = true;
this.btnSub.Click += new System.EventHandler(this.Operator_Click);
//
// btnAdd
//
this.btnAdd.Font = new System.Drawing.Font("Microsoft Sans Serif", 15.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnAdd.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(192)))), ((int)(((byte)(0)))), ((int)(((byte)(0)))));
this.btnAdd.Location = new System.Drawing.Point(222, 268);
this.btnAdd.Name = "btnAdd";
this.btnAdd.Size = new System.Drawing.Size(47, 39);
this.btnAdd.TabIndex = 18;
this.btnAdd.Text = "+";
this.btnAdd.UseVisualStyleBackColor = true;
this.btnAdd.Click += new System.EventHandler(this.Operator_Click);
//
// btnSqrt
//
this.btnSqrt.Location = new System.Drawing.Point(297, 133);
this.btnSqrt.Name = "btnSqrt";
this.btnSqrt.Size = new System.Drawing.Size(47, 39);
this.btnSqrt.TabIndex = 19;
this.btnSqrt.Text = "Sqrt";
this.btnSqrt.UseVisualStyleBackColor = true;
this.btnSqrt.Click += new System.EventHandler(this.Operator_Click);
//
// btnFrac
//
this.btnFrac.Location = new System.Drawing.Point(297, 178);
this.btnFrac.Name = "btnFrac";
this.btnFrac.Size = new System.Drawing.Size(47, 39);
this.btnFrac.TabIndex = 20;
this.btnFrac.Text = "1/x";
this.btnFrac.UseVisualStyleBackColor = true;
this.btnFrac.Click += new System.EventHandler(this.btnFrac_Click);
//
// btnEqual
//
this.btnEqual.Font = new System.Drawing.Font("Microsoft Sans Serif", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnEqual.ForeColor = System.Drawing.Color.Red;
this.btnEqual.Location = new System.Drawing.Point(297, 223);
this.btnEqual.Name = "btnEqual";
this.btnEqual.Size = new System.Drawing.Size(47, 84);
this.btnEqual.TabIndex = 21;
this.btnEqual.Text = "=";
this.btnEqual.UseVisualStyleBackColor = true;
this.btnEqual.Click += new System.EventHandler(this.btnEqual_Click);
//
// Form1
//
this.AcceptButton = this.btnEqual;
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(365, 326);
this.Controls.Add(this.btnEqual);
this.Controls.Add(this.btnFrac);
this.Controls.Add(this.btnSqrt);
this.Controls.Add(this.btnAdd);
this.Controls.Add(this.btnSub);
this.Controls.Add(this.btnPro);
this.Controls.Add(this.btnDiv);
this.Controls.Add(this.button14);
this.Controls.Add(this.button13);
this.Controls.Add(this.btn0);
this.Controls.Add(this.btn3);
this.Controls.Add(this.btn2);
this.Controls.Add(this.btn1);
this.Controls.Add(this.btn6);
this.Controls.Add(this.btn5);
this.Controls.Add(this.btn4);
this.Controls.Add(this.btn9);
this.Controls.Add(this.btn8);
this.Controls.Add(this.btn7);
this.Controls.Add(this.btnClear);
this.Controls.Add(this.btnBack);
this.Controls.Add(this.txtDisplay);
this.Font = new System.Drawing.Font("Microsoft Sans Serif", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
this.Margin = new System.Windows.Forms.Padding(4);
this.MaximizeBox = false;
this.Name = "Form1";
this.Text = "Simple dCalculator";
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.TextBox txtDisplay;
private System.Windows.Forms.Button btnBack;
private System.Windows.Forms.Button btnClear;
private System.Windows.Forms.Button btn7;
private System.Windows.Forms.Button btn8;
private System.Windows.Forms.Button btn9;
private System.Windows.Forms.Button btn4;
private System.Windows.Forms.Button btn5;
private System.Windows.Forms.Button btn6;
private System.Windows.Forms.Button btn1;
private System.Windows.Forms.Button btn2;
private System.Windows.Forms.Button btn3;
private System.Windows.Forms.Button btn0;
private System.Windows.Forms.Button button13;
private System.Windows.Forms.Button button14;
private System.Windows.Forms.Button btnDiv;
private System.Windows.Forms.Button btnPro;
private System.Windows.Forms.Button btnSub;
private System.Windows.Forms.Button btnAdd;
private System.Windows.Forms.Button btnSqrt;
private System.Windows.Forms.Button btnFrac;
private System.Windows.Forms.Button btnEqual;
}
}
Copy the class: calculatorclass ()
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms; //using system.Windows.Forms;
namespace Moder_Machine_Calc
{
class Calculator
{
//Fields
private double number1;
private double number2;
private char op;
private double result;
//Empty Constructor
public Calculator(){}
//Custom Construtor
public Calculator(double n1, double n2, char op)
{
number1 = n1;
number2 = n2;
this.op = op; //this.op is field value ^^^^^^^ op is operator.
//use can use this above
}
//Properties
public double Number1
{
get
{
return number1;
}
set
{
number1 = value;
}
}
public double Number2
{
get
{
return number2;
}
set
{
number2 = value;
}
}
public char Op
{
get {
return op;
}
set
{
op = value;
}
}
public double Result
{
get
{
return result;
}
set
{
result = value;
}
}
//Methods
public void Add()
{
result = number1 + number2;
}
public void Subtract()
{
result = number1 - number2;
}
public void product()
{
result = number1 * number2;
}
public void divide()
{
result = number1 / number2;
}
public void reciprocal()
{
try
{
result = 1 / number1;
}
catch
{
MessageBox.Show("Cannot be dividede by Zeor", "Infinity Error");
}
}
public void squaroot()
{
result = Math.Sqrt(number1);
}
public string DisplayResult()
{
return result.ToString();
}
}
}
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 Moder_Machine_Calc
{
public partial class Form1 : Form
{
//Global Variables
string number1;
string number2;
string op;
string input;
int countRepeat;
Calculator obj = new Calculator(); //calculator object is created
public Form1()
{
InitializeComponent();
}
private void number_Click(object sender, EventArgs e)
{
if (((Button)sender).Text == "+/-")
{
input = (-Convert.ToDouble(txtDisplay.Text)).ToString();
}
else
{
input += ((Button)sender).Text; //Type cast ..button object
txtDisplay.Text = input;
}
}
private void Operator_Click(object sender, EventArgs e)
{
countRepeat = 0;
number1 = input;
op = ((Button)sender).Text;
input = "";
txtDisplay.Text = "";
op = ((Button)sender).Text;
if (op == "Sqrt")
{
obj.Number1 = Convert.ToDouble(number1);
if (op == "Sqrt")
{
obj.squaroot();
txtDisplay.Text = obj.Result.ToString();
}
}
}
private void btnEqual_Click(object sender, EventArgs e)
{
countRepeat++;
if (countRepeat == 1)
{
number2 = txtDisplay.Text;
input = "";
}
else if(countRepeat >1)
{
number1 = txtDisplay.Text;
}
obj.Number1 = Convert.ToDouble(number1);
obj.Number2 = Convert.ToDouble(number2);
obj.Op = Convert.ToChar(op);
if (op == "+")
{
obj.Add();
input = "";
txtDisplay.Text = "";
}
else if (op == "-")
{
obj.Subtract();
}
else if (op == "*")
{
obj.product();
}
else if (op == "/")
{
obj.divide();
}
txtDisplay.Text = obj.Result.ToString();
}
private void btnClear_Click(object sender, EventArgs e)
{//clear
txtDisplay.Clear();
number1 ="";
number2 = "";
input = "";
}
private void btnBack_Click(object sender, EventArgs e)
{
if (txtDisplay.Text.Length != 0)
{
input = txtDisplay.Text.Remove(txtDisplay.Text.Length - 1);
}
else
{
input = "";
}
txtDisplay.Text = input;
}
private void btnFrac_Click(object sender, EventArgs e)
{
number1 = input;
op = ((Button)sender).Text;
if (op == "1/x")
{
obj.Number1 = Convert.ToDouble(number1);
if (op == "1/x")
{
obj.reciprocal();
txtDisplay.Text = obj.Result.ToString();
}
}
}
}
}
Designer form :
namespace Moder_Machine_Calc
{
partial class Form1
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1));
this.txtDisplay = new System.Windows.Forms.TextBox();
this.btnBack = new System.Windows.Forms.Button();
this.btnClear = new System.Windows.Forms.Button();
this.btn7 = new System.Windows.Forms.Button();
this.btn8 = new System.Windows.Forms.Button();
this.btn9 = new System.Windows.Forms.Button();
this.btn4 = new System.Windows.Forms.Button();
this.btn5 = new System.Windows.Forms.Button();
this.btn6 = new System.Windows.Forms.Button();
this.btn1 = new System.Windows.Forms.Button();
this.btn2 = new System.Windows.Forms.Button();
this.btn3 = new System.Windows.Forms.Button();
this.btn0 = new System.Windows.Forms.Button();
this.button13 = new System.Windows.Forms.Button();
this.button14 = new System.Windows.Forms.Button();
this.btnDiv = new System.Windows.Forms.Button();
this.btnPro = new System.Windows.Forms.Button();
this.btnSub = new System.Windows.Forms.Button();
this.btnAdd = new System.Windows.Forms.Button();
this.btnSqrt = new System.Windows.Forms.Button();
this.btnFrac = new System.Windows.Forms.Button();
this.btnEqual = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// txtDisplay
//
this.txtDisplay.BackColor = System.Drawing.SystemColors.AppWorkspace;
this.txtDisplay.Font = new System.Drawing.Font("Microsoft Sans Serif", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.txtDisplay.ForeColor = System.Drawing.SystemColors.InfoText;
this.txtDisplay.Location = new System.Drawing.Point(17, 16);
this.txtDisplay.Margin = new System.Windows.Forms.Padding(4);
this.txtDisplay.Multiline = true;
this.txtDisplay.Name = "txtDisplay";
this.txtDisplay.ReadOnly = true;
this.txtDisplay.Size = new System.Drawing.Size(327, 44);
this.txtDisplay.TabIndex = 0;
this.txtDisplay.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;
//
// btnBack
//
this.btnBack.ForeColor = System.Drawing.Color.Red;
this.btnBack.Location = new System.Drawing.Point(17, 68);
this.btnBack.Margin = new System.Windows.Forms.Padding(4);
this.btnBack.Name = "btnBack";
this.btnBack.Size = new System.Drawing.Size(115, 37);
this.btnBack.TabIndex = 1;
this.btnBack.Text = "Back";
this.btnBack.UseVisualStyleBackColor = true;
this.btnBack.Click += new System.EventHandler(this.btnBack_Click);
//
// btnClear
//
this.btnClear.Font = new System.Drawing.Font("Microsoft Sans Serif", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnClear.ForeColor = System.Drawing.Color.Red;
this.btnClear.Location = new System.Drawing.Point(231, 68);
this.btnClear.Margin = new System.Windows.Forms.Padding(4);
this.btnClear.Name = "btnClear";
this.btnClear.Size = new System.Drawing.Size(115, 37);
this.btnClear.TabIndex = 2;
this.btnClear.Text = "Clear";
this.btnClear.UseVisualStyleBackColor = true;
this.btnClear.Click += new System.EventHandler(this.btnClear_Click);
//
// btn7
//
this.btn7.Location = new System.Drawing.Point(17, 133);
this.btn7.Name = "btn7";
this.btn7.Size = new System.Drawing.Size(47, 39);
this.btn7.TabIndex = 3;
this.btn7.Text = "7";
this.btn7.UseVisualStyleBackColor = true;
this.btn7.Click += new System.EventHandler(this.number_Click);
//
// btn8
//
this.btn8.Location = new System.Drawing.Point(85, 133);
this.btn8.Name = "btn8";
this.btn8.Size = new System.Drawing.Size(47, 39);
this.btn8.TabIndex = 4;
this.btn8.Text = "8";
this.btn8.UseVisualStyleBackColor = true;
this.btn8.Click += new System.EventHandler(this.number_Click);
//
// btn9
//
this.btn9.Location = new System.Drawing.Point(147, 133);
this.btn9.Name = "btn9";
this.btn9.Size = new System.Drawing.Size(47, 39);
this.btn9.TabIndex = 5;
this.btn9.Text = "9";
this.btn9.UseVisualStyleBackColor = true;
this.btn9.Click += new System.EventHandler(this.number_Click);
//
// btn4
//
this.btn4.Location = new System.Drawing.Point(17, 178);
this.btn4.Name = "btn4";
this.btn4.Size = new System.Drawing.Size(47, 39);
this.btn4.TabIndex = 6;
this.btn4.Text = "4";
this.btn4.UseVisualStyleBackColor = true;
this.btn4.Click += new System.EventHandler(this.number_Click);
//
// btn5
//
this.btn5.Location = new System.Drawing.Point(85, 178);
this.btn5.Name = "btn5";
this.btn5.Size = new System.Drawing.Size(47, 39);
this.btn5.TabIndex = 7;
this.btn5.Text = "5";
this.btn5.UseVisualStyleBackColor = true;
this.btn5.Click += new System.EventHandler(this.number_Click);
//
// btn6
//
this.btn6.Location = new System.Drawing.Point(147, 178);
this.btn6.Name = "btn6";
this.btn6.Size = new System.Drawing.Size(47, 39);
this.btn6.TabIndex = 8;
this.btn6.Text = "6";
this.btn6.UseVisualStyleBackColor = true;
this.btn6.Click += new System.EventHandler(this.number_Click);
//
// btn1
//
this.btn1.Location = new System.Drawing.Point(17, 223);
this.btn1.Name = "btn1";
this.btn1.Size = new System.Drawing.Size(47, 39);
this.btn1.TabIndex = 9;
this.btn1.Text = "1";
this.btn1.UseVisualStyleBackColor = true;
this.btn1.Click += new System.EventHandler(this.number_Click);
//
// btn2
//
this.btn2.Location = new System.Drawing.Point(85, 223);
this.btn2.Name = "btn2";
this.btn2.Size = new System.Drawing.Size(47, 39);
this.btn2.TabIndex = 10;
this.btn2.Text = "2";
this.btn2.UseVisualStyleBackColor = true;
this.btn2.Click += new System.EventHandler(this.number_Click);
//
// btn3
//
this.btn3.Location = new System.Drawing.Point(147, 223);
this.btn3.Name = "btn3";
this.btn3.Size = new System.Drawing.Size(47, 39);
this.btn3.TabIndex = 11;
this.btn3.Text = "3";
this.btn3.UseVisualStyleBackColor = true;
this.btn3.Click += new System.EventHandler(this.number_Click);
//
// btn0
//
this.btn0.Location = new System.Drawing.Point(17, 270);
this.btn0.Name = "btn0";
this.btn0.Size = new System.Drawing.Size(47, 39);
this.btn0.TabIndex = 12;
this.btn0.Text = "0";
this.btn0.UseVisualStyleBackColor = true;
this.btn0.Click += new System.EventHandler(this.number_Click);
//
// button13
//
this.button13.Location = new System.Drawing.Point(85, 270);
this.button13.Name = "button13";
this.button13.Size = new System.Drawing.Size(47, 39);
this.button13.TabIndex = 13;
this.button13.Text = "+/-";
this.button13.UseVisualStyleBackColor = true;
this.button13.Click += new System.EventHandler(this.number_Click);
//
// button14
//
this.button14.Font = new System.Drawing.Font("Microsoft Sans Serif", 18F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.button14.Location = new System.Drawing.Point(147, 270);
this.button14.Name = "button14";
this.button14.Size = new System.Drawing.Size(47, 39);
this.button14.TabIndex = 14;
this.button14.Text = ".";
this.button14.UseVisualStyleBackColor = true;
this.button14.Click += new System.EventHandler(this.number_Click);
//
// btnDiv
//
this.btnDiv.BackColor = System.Drawing.SystemColors.Control;
this.btnDiv.Font = new System.Drawing.Font("Microsoft Sans Serif", 15.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnDiv.ForeColor = System.Drawing.Color.Red;
this.btnDiv.Location = new System.Drawing.Point(222, 133);
this.btnDiv.Name = "btnDiv";
this.btnDiv.Size = new System.Drawing.Size(47, 39);
this.btnDiv.TabIndex = 15;
this.btnDiv.Text = "/";
this.btnDiv.UseVisualStyleBackColor = false;
this.btnDiv.Click += new System.EventHandler(this.Operator_Click);
//
// btnPro
//
this.btnPro.Font = new System.Drawing.Font("Microsoft Sans Serif", 18F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnPro.ForeColor = System.Drawing.Color.Red;
this.btnPro.Location = new System.Drawing.Point(222, 178);
this.btnPro.Name = "btnPro";
this.btnPro.Size = new System.Drawing.Size(47, 39);
this.btnPro.TabIndex = 16;
this.btnPro.Text = "*";
this.btnPro.UseVisualStyleBackColor = true;
this.btnPro.Click += new System.EventHandler(this.Operator_Click);
//
// btnSub
//
this.btnSub.Font = new System.Drawing.Font("Microsoft Sans Serif", 15.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnSub.ForeColor = System.Drawing.Color.Red;
this.btnSub.Location = new System.Drawing.Point(222, 223);
this.btnSub.Name = "btnSub";
this.btnSub.Size = new System.Drawing.Size(47, 39);
this.btnSub.TabIndex = 17;
this.btnSub.Text = "-";
this.btnSub.UseVisualStyleBackColor = true;
this.btnSub.Click += new System.EventHandler(this.Operator_Click);
//
// btnAdd
//
this.btnAdd.Font = new System.Drawing.Font("Microsoft Sans Serif", 15.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnAdd.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(192)))), ((int)(((byte)(0)))), ((int)(((byte)(0)))));
this.btnAdd.Location = new System.Drawing.Point(222, 268);
this.btnAdd.Name = "btnAdd";
this.btnAdd.Size = new System.Drawing.Size(47, 39);
this.btnAdd.TabIndex = 18;
this.btnAdd.Text = "+";
this.btnAdd.UseVisualStyleBackColor = true;
this.btnAdd.Click += new System.EventHandler(this.Operator_Click);
//
// btnSqrt
//
this.btnSqrt.Location = new System.Drawing.Point(297, 133);
this.btnSqrt.Name = "btnSqrt";
this.btnSqrt.Size = new System.Drawing.Size(47, 39);
this.btnSqrt.TabIndex = 19;
this.btnSqrt.Text = "Sqrt";
this.btnSqrt.UseVisualStyleBackColor = true;
this.btnSqrt.Click += new System.EventHandler(this.Operator_Click);
//
// btnFrac
//
this.btnFrac.Location = new System.Drawing.Point(297, 178);
this.btnFrac.Name = "btnFrac";
this.btnFrac.Size = new System.Drawing.Size(47, 39);
this.btnFrac.TabIndex = 20;
this.btnFrac.Text = "1/x";
this.btnFrac.UseVisualStyleBackColor = true;
this.btnFrac.Click += new System.EventHandler(this.btnFrac_Click);
//
// btnEqual
//
this.btnEqual.Font = new System.Drawing.Font("Microsoft Sans Serif", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnEqual.ForeColor = System.Drawing.Color.Red;
this.btnEqual.Location = new System.Drawing.Point(297, 223);
this.btnEqual.Name = "btnEqual";
this.btnEqual.Size = new System.Drawing.Size(47, 84);
this.btnEqual.TabIndex = 21;
this.btnEqual.Text = "=";
this.btnEqual.UseVisualStyleBackColor = true;
this.btnEqual.Click += new System.EventHandler(this.btnEqual_Click);
//
// Form1
//
this.AcceptButton = this.btnEqual;
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(365, 326);
this.Controls.Add(this.btnEqual);
this.Controls.Add(this.btnFrac);
this.Controls.Add(this.btnSqrt);
this.Controls.Add(this.btnAdd);
this.Controls.Add(this.btnSub);
this.Controls.Add(this.btnPro);
this.Controls.Add(this.btnDiv);
this.Controls.Add(this.button14);
this.Controls.Add(this.button13);
this.Controls.Add(this.btn0);
this.Controls.Add(this.btn3);
this.Controls.Add(this.btn2);
this.Controls.Add(this.btn1);
this.Controls.Add(this.btn6);
this.Controls.Add(this.btn5);
this.Controls.Add(this.btn4);
this.Controls.Add(this.btn9);
this.Controls.Add(this.btn8);
this.Controls.Add(this.btn7);
this.Controls.Add(this.btnClear);
this.Controls.Add(this.btnBack);
this.Controls.Add(this.txtDisplay);
this.Font = new System.Drawing.Font("Microsoft Sans Serif", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
this.Margin = new System.Windows.Forms.Padding(4);
this.MaximizeBox = false;
this.Name = "Form1";
this.Text = "Simple dCalculator";
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.TextBox txtDisplay;
private System.Windows.Forms.Button btnBack;
private System.Windows.Forms.Button btnClear;
private System.Windows.Forms.Button btn7;
private System.Windows.Forms.Button btn8;
private System.Windows.Forms.Button btn9;
private System.Windows.Forms.Button btn4;
private System.Windows.Forms.Button btn5;
private System.Windows.Forms.Button btn6;
private System.Windows.Forms.Button btn1;
private System.Windows.Forms.Button btn2;
private System.Windows.Forms.Button btn3;
private System.Windows.Forms.Button btn0;
private System.Windows.Forms.Button button13;
private System.Windows.Forms.Button button14;
private System.Windows.Forms.Button btnDiv;
private System.Windows.Forms.Button btnPro;
private System.Windows.Forms.Button btnSub;
private System.Windows.Forms.Button btnAdd;
private System.Windows.Forms.Button btnSqrt;
private System.Windows.Forms.Button btnFrac;
private System.Windows.Forms.Button btnEqual;
}
}
Copy the class: calculatorclass ()
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms; //using system.Windows.Forms;
namespace Moder_Machine_Calc
{
class Calculator
{
//Fields
private double number1;
private double number2;
private char op;
private double result;
//Empty Constructor
public Calculator(){}
//Custom Construtor
public Calculator(double n1, double n2, char op)
{
number1 = n1;
number2 = n2;
this.op = op; //this.op is field value ^^^^^^^ op is operator.
//use can use this above
}
//Properties
public double Number1
{
get
{
return number1;
}
set
{
number1 = value;
}
}
public double Number2
{
get
{
return number2;
}
set
{
number2 = value;
}
}
public char Op
{
get {
return op;
}
set
{
op = value;
}
}
public double Result
{
get
{
return result;
}
set
{
result = value;
}
}
//Methods
public void Add()
{
result = number1 + number2;
}
public void Subtract()
{
result = number1 - number2;
}
public void product()
{
result = number1 * number2;
}
public void divide()
{
result = number1 / number2;
}
public void reciprocal()
{
try
{
result = 1 / number1;
}
catch
{
MessageBox.Show("Cannot be dividede by Zeor", "Infinity Error");
}
}
public void squaroot()
{
result = Math.Sqrt(number1);
}
public string DisplayResult()
{
return result.ToString();
}
}
}