[Salesforce] 下拉列表

public List<SelectOption> getAmounts() {
        List<SelectOption> options = new List<SelectOption>();
        options.add(new SelectOption('1', '1'));
        options.add(new SelectOption('2', '2'));
        options.add(new SelectOption('3', '3'));
        options.add(new SelectOption('4', '4'));
        options.add(new SelectOption('5', '5'));
        options.add(new SelectOption('6', '6'));
        options.add(new SelectOption('7', '7'));
        options.add(new SelectOption('8', '8'));
        options.add(new SelectOption('9', '9'));
        options.add(new SelectOption('10', '10'));
        return options;
    }



<apex:selectList value="{!addAmount}" size="1" rendered="{!!isOnlySales}" styleClass="handleClass">
                    <apex:selectOptions value="{!Amounts}"/>
                </apex:selectList>