I could really use some help with this assignment! Must be a form application in

Question

I could really use some help with this assignment!

Must be a form application in C# also must be basic as I am a beginner.

The code that must be upgraded

private void btnCalculate_Click(object sender, EventArgs e)
{
decimal operand1 = Convert.ToDecimal(txtOperand1.Text);
string operator1 = txtOperator.Text;
decimal operand2 = Convert.ToDecimal(txtOperand2.Text);
decimal result = Calculate(operand1, operator1, operand2);

result = Math.Round(result, 4);
this.txtResult.Text = result.ToString();
txtOperand1.Focus();
}

private decimal Calculate(decimal operand1, string operator1,
decimal operand2)
{
decimal result = 0;
if (operator1 == "+")
result = operand1 + operand2;
else if (operator1 == "-")
result = operand1 - operand2;
else if (operator1 == "*")
result = operand1 * operand2;
else if (operator1 == "/")
result = operand1 / operand2;
return result;
}

private void btnExit_Click(object sender, EventArgs e)
{
this.Close();
}
}
}

In this exercise, you’ll add exception handling to the Simple Calculator form exercise A4-E1.

1.Open the SimpleCalculator project in the Assignment5SimpleCalculatoException directory.

2.     Add a try-catch statement in the btnCalculate_Click event handler that will catch any exceptions that occur when the statements in that event handler are executed.

If an exception occurs, display a dialog box with

the error message,

the type of error,

and a stack trace.

Test the application by entering a nonnumeric value for one of the operands.

3.     Add three additional catch blocks to the try-catch statement that will catch

a FormatException,

an OverflowException, and

a DivideByZeroException.

These catch blocks should display a dialog box with an appropriate error message.

4.     Test the application again by entering a nonnumeric value for one of the operands. Then, enter 0 for the second operand as shown above to see what happens.

Thanks!

Explanation / Answer

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 Exceptionmath
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void btnCalculate_Click(object sender, EventArgs e)
{

string operator1 = txtOperator.Text;
try
{
decimal operand1 = Convert.ToDecimal(txtOperand1.Text);
decimal operand2 = Convert.ToDecimal(txtOperand2.Text);
decimal result = Calculate(operand1, operator1, operand2);

result = Math.Round(result, 4);
this.txtResult.Text = result.ToString();
txtOperand1.Focus();
}
catch (FormatException frex)
{
MessageBox.Show("Dont enter non numeric value" + frex.Message, frex.StackTrace);
}
catch(OverflowException ovex)
{
MessageBox.Show("Overflow exception" + ovex.StackTrace);
}
catch (DivideByZeroException dvzero)
{
MessageBox.Show("Can not divide by zero"+dvzero.StackTrace);
}
  
}
private decimal Calculate(decimal operand1, string operator1, decimal operand2)
{
decimal result = 0;
if (operator1 == "+")
result = operand1 + operand2;
else if (operator1 == "-")
result = operand1 - operand2;
else if (operator1 == "*")
result = operand1 * operand2;
else if (operator1 == "/")
result = operand1 / operand2;   
  
return result;
  

}

private void button2_Click(object sender, EventArgs e)
{
this.Close();
}
}
}

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