Use NumberValidator to validate and CurrencyFormatter to format

    
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" minWidth="1024" minHeight="768">
        <mx:CurrencyFormatter id="currencyFormatter" currencySymbol="L" thousandsSeparatorFrom="." decimalSeparatorFrom=","/>
        <mx:NumberValidator id="numValidator" property="text"/>
    <mx:Script>
        
            import mx.events.ValidationResultEvent;
            private var vResult:ValidationResultEvent;
            
            private function currencyFormat():void {
                vResult = numValidator.validate(inputCurrency.text);
                if (vResult.type==ValidationResultEvent.VALID) {
                    inputCurrency.text =
                        currencyFormatter.format(inputCurrency.text);
                } else {
                    inputCurrency.text= "";
                }
            }
            
      
    </mx:Script>
            <mx:Label text="Currency Input"/>
            <mx:TextInput id="inputCurrency" focusOut="currencyFormat()" width="300"/>
</mx:Application>

1.	Use CurrencyValidator to validate money values
2.	Using the CurrencyValidator to validate US currency
3.	Using the CurrencyValidator to validate European-formatted price
4.	Using CurrencyValidator class to validate a currency value entered in U.S. dollars and in Euros
5.	Currency formatter cell renderer
6.	CurrencyFormatter precision
7.	CurrencyFormatter decimalSeparatorTo
8.	CurrencyFormatter thousandsSeparatorTo
9.	CurrencyFormatter useThousandsSeparator
10.	CurrencyFormatter useNegativeSign
11.	Example of Currency Formatter
12.	Use CurrencyFormatter and NumberFormatter to format label for Chart
13.	Using the CurrencyFormatter class

Use NumberValidator to validate and CurrencyFormatter to format : CurrencyValidator « Data Model « Flex

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