//click event displays all employees earning above the inputted threshold
private void employeesEarningOverButton_Click(object sender, EventArgs e)
{
try
{
decimal threshold = decimal.Parse(thresholdTextBox.Text);
var employeeList = Operations.EmployeesEarningOver(threshold);
employeesEarningOverDataGridView.DataSource = employeeList;
}
catch
{
MessageBox.Show("Please enter a valid threshold");
}
}