/// <summary>
/// Checks if the given id is unique
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public bool uniqueId(string id)
{
int index = 0;
// Loop to check that the given Id is unique
while (estateManager.CheckIndex(index))
{
Estate e = estateManager.GetAt(index);
if (e.Id == id)
{
MessageBox.Show($"The id: {id} is not unique, please chooose anonther Id. \n" +
$" To see the Id´s int he list, browse the Delete tab.");
return(false);
}
++index;
}
return(true);
}