private void submit_Click(object sender, EventArgs e)
{
int num1 = int.Parse(txtNum1.Text);
int num2 = int.Parse(txtNum2.Text);
//namespace.classname
Calculator.CalculatorBOL cal = new CalculatorBOL();
switch (Fnoperator)
{
case "+":
ArithmaticOperation op1 = new ArithmaticOperation(cal.Add);
op1(num1, num2);
break;
case "-":
ArithmaticOperation op2 = new ArithmaticOperation(cal.Sub);
op2(num1, num2);
break;
case "*":
ArithmaticOperation op3 = new ArithmaticOperation(cal.Mult);
op3(num1, num2);
break;
case "/":
ArithmaticOperation op4 = new ArithmaticOperation(cal.Div);
op4(num1, num2);
break;
}
int result = cal.Result;
label1.Text = result.ToString();
}
static void Main(string[] args)
{
Console.WriteLine("enter choice: \n 1.ADD \n 2.SUB \n 3.MULT \n 4.DIV \n");
int choice = int.Parse(Console.ReadLine());
Console.WriteLine("enter num1:");
int num1 = int.Parse(Console.ReadLine());
Console.WriteLine("enter num2:");
int num2 = int.Parse(Console.ReadLine());
CalculatorBOL cal = new CalculatorBOL();
switch (choice)
{
case 1:
ArithmaticOperation op1 = new ArithmaticOperation(cal.Add);
op1(num1, num2);
Console.WriteLine("addition is");
break;
case 2:
ArithmaticOperation op2 = new ArithmaticOperation(cal.Sub);
op2(num1, num2);
Console.WriteLine("subtraction is");
break;
}
int result = cal.Result;
Console.WriteLine(result);
Console.ReadLine();
}
private void submit_Click(object sender, EventArgs e)
{
int num1 = int.Parse(textBox1.Text);
int num2 = int.Parse(textBox2.Text);
Cal1.CalBOL cal = new CalBOL();
switch (foperator)
{
case "+":
ArithmaticOperation op1 = new ArithmaticOperation(cal.Add);
op1(num1, num2);
break;
case "-":
ArithmaticOperation op2 = new ArithmaticOperation(cal.Sub);
op2(num1, num2);
break;
case "*":
ArithmaticOperation op3 = new ArithmaticOperation(cal.Mul);
op3(num1, num2);
break;
case "/":
ArithmaticOperation op4 = new ArithmaticOperation(cal.Div);
op4(num1, num2);
break;
}
int result = cal.Result;
label1.Text = result.ToString();
}
void RefershAll()
{
this.fisrtOperand = 0.0;
this.txtMonitor.Text = "0";
intStream = true;
dotPressed = false;
currentOperation = ArithmaticOperation.None;
}
public MainForm()
{
InitializeComponent();
intStream = true;
currentOperation = ArithmaticOperation.None;
fisrtOperand = 0.0;
ResetMemory();
dotPressed = false;
}
static void OnMultiplication(IAsyncResult itfAR)
{
//it is like a handler
Console.WriteLine("SubComplete() invoked on thread {0}.",
Thread.CurrentThread.ManagedThreadId);
Console.WriteLine("Your subtraction is complete");
// Now get the result.
AsyncResult ar = (AsyncResult)itfAR;
ArithmaticOperation b = (ArithmaticOperation)ar.AsyncDelegate;
Console.WriteLine("20 - 10 is {0}.", b.EndInvoke(itfAR));
// Retrieve the informational object and cast it to string
string msg = (string)itfAR.AsyncState;
Console.WriteLine(msg);
}
static void Main(string[] args)
{
Console.WriteLine("***** AsyncCallbackDelegate Example *****");
Console.WriteLine("Main() invoked on thread {0}.",
Thread.CurrentThread.ManagedThreadId);
ArithmaticOperation b = new ArithmaticOperation(Sub);
IAsyncResult iftAR = b.BeginInvoke(20, 10,
new AsyncCallback(OnSubtraction),
"Main() thank you for subtracting these numbers.");
// Assume other work is performed here...
Console.ReadLine();
}
static void Main()
{
//how to write anonymous method: 1
Func <int, int, int> add = (a, b) => (a + b);
ArithmaticOperation <int, int> addOperation = delegate(int x, int y)
{
return(x + y);
};
//addOperation(12, 3);
//how to write anonymous method: 2 (Lambda syntax/Lambda) => Lambda operator
//2007 (.net framework - 3.0/ C# - 3.0)
ArithmaticOperation <double, double> multiplyOperation = (a, b) => (a * b);
//ArithmaticOperation multiplyOperation = new ArithmaticOperation((a, b) => (a * b));
ArithmaticOperation <long, long> subtractOperation = (m, n) =>
{
return(m - n);
};
Calculate <int, int>(addOperation, 12, 3);
Calculate <double, double>(multiplyOperation, 12.4, 3.2);
Calculate <long, long>(subtractOperation, 12234, 3456);
}
private void btnDivide_Click(object sender, EventArgs e)
{
this.PutStringOnScreen(this.CalculateResult().ToString());
Button currentButton = (Button)sender;
if (currentButton == this.btnPlus)
{
this.currentOperation = ArithmaticOperation.Addition;
}
else if (currentButton == this.btnMultiply)
{
this.currentOperation = ArithmaticOperation.Multiplication;
}
else if (currentButton == this.btnDivide)
{
this.currentOperation = ArithmaticOperation.Division;
}
else if (currentButton == this.btnSubtract)
{
this.currentOperation = ArithmaticOperation.Subtraction;
}
this.intStream = false;
dotPressed = false;
}
static void Calculate <TIn, TOut>(ArithmaticOperation <TIn, TOut> operation, TIn a, TIn b)
{
Console.WriteLine(operation(a, b));
}
