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35 | using System;
using System.Windows.Forms;
namespace PercentageOfChangeCalculator
{
public partial class MainForm : Form
{
double initial, final;
public frmPercentageOfChangeCalculator()
{
InitializeComponent();
}
private void clearButton_Click(object sender, EventArgs e)
{
initialValueTextBox.Clear();
finalValueTextBox.Clear();
initialValueTextBox.Focus();
resultLabel.Text = null;
}
private void calculateButton_Click(object sender, EventArgs e)
{
if (double.TryParse(initialValueTextBox.Text, out initial) && double.TryParse(finalValueTextBox.Text, out final))
{
double percentage = ((final - initial) / initial) * 100;
resultLabel.Text = $"Percentage of change: {percentage}%";
}
else
{
MessageBox.Show("Please enter valid numeric values for initial and final values.");
}
}
}
}
|
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