//implenting singelton pattern to this class
public static CreateLoan Instance(Member member = null)
{
if (instance == null)
{
instance = new CreateLoan();
}
instance.SetAsNewWindow(member);
return(instance);
}
private void LoanBook_Click(object sender, EventArgs e)
{
Utils.SwitchBetweenWindows(this, CreateLoan.Instance());
}