ryanbecker24
asked on
Calculator help
I am getting errors on the line decimal result = Convert.ToDecimal(txtResul t.Text);. It says input string is not in the correct format. I am new to C# so, any help would be appreciated. Thanks in advance.
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 Calculator
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
this.Load += new EventHandler(Form1_Load);
}
private void btnExit_Click(object sender, EventArgs e)
{
this.Close();
}
private void btnCalculate_Click(object sender, EventArgs e)
{
decimal operand1 = Convert.ToDecimal(txtOperand1.Text);
decimal operand2 = Convert.ToDecimal(txtOperand2.Text);
decimal result = Convert.ToDecimal(txtResult.Text);
string operator1 = txtOperator.Text;
if (operator1 == "+")
{
result = operand1 + operand2;
}
else if (operator1 == "-")
{
result= operand1-operand2;
}
else if (operator1 == "*")
{
result = operand1 * operand2;
}
else if (operator1 == "/")
{
result = operand1 / operand2;
}
}
private void Form1_Load(object sender, EventArgs e)
{
}
}
}
ASKER
Thanks, but txtResult.Text = result.ToString() isn't working. It is saying use of unassigned local variable, but its being used though. Also, I don't understand what you mean with the asterisk. Sorry, for all the questions
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ASKER
Thank you
Change:
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*That error will occur for "operand1" and "operand2" if the value in the TextBox cannot be converted to a proper decimal. To prevent that type of error, use Decimal.TryParse().