private void SortByRadioButton_Click(object sender, EventArgs e)
{
CustomerSorter sorter = null;
if (sender == rdName)
{
sorter = SortByName;
}
else if (sender == rdBalance)
{
sorter = SortByBalance;
}
else
{
sorter = SortByAccountNumber;
}
sorter(Customers);
}
// Sort by the indicated RadioButton.
private void sortByRadioButton_Click(object sender, EventArgs e)
{
// Create a delegate variable.
CustomerSorter sorter = null;
// Make the variable refer to the appropriate method.
if (sender == nameRadioButton)
{
sorter = SortByName;
}
else if (sender == accountNumberRadioButton)
{
sorter = SortByAccountNumber;
}
else
{
sorter = SortByBalance;
}
// Invoke the method to sort the customers.
sorter(Customers);
}
