在Flex中使用XML / XML属性

I am new to XML and XML attributes. I have read in some XML documentation that XML can be represented in 2 ways:

我是XML和XML属性的新手。我在一些XML文档中读到XML可以用两种方式表示：

Method-1

方法1

<?xml version="1.0" encoding="UTF-8"?>
<CATALOG>
 <CD>
        <TITLE>Empire Burlesque</TITLE>
        <ARTIST>Bob Dylan</ARTIST>
        <COUNTRY>USA</COUNTRY>
        <COMPANY>Columbia</COMPANY>
        <PRICE>10.90</PRICE>
        <YEAR>1985</YEAR>
    </CD>
    <CD>
        <TITLE>Hide your heart</TITLE>
        <ARTIST>Bonnie Tyler</ARTIST>
        <COUNTRY>UK</COUNTRY>
        <COMPANY>CBS Records</COMPANY>
        <PRICE>8.90</PRICE>
        <YEAR>1988</YEAR>
    </CD>
</CATALOG>

Method - 2

方法 - 2

<?xml version="1.0" encoding="UTF-8"?>
<CATALOG>
    <CD TITLE="Empire Burlesque" ARTIST="Bob Dylan" COUNTRY="USA" COMPANY="Columbia" PRICE="10.90" YEAR="1985"/>
    <CD TITLE="Hide your heart" ARTIST="Bonnie Tyler" COUNTRY="UK" COMPANY="CBS Records" PRICE="8.90" YEAR="1988"/>
 </CATALOG>

But for example when I am using this function to filter where price >=9 and display the data in a grid. When using XML Way 1, it works fine, but when I use XML Way 2, the datagrid is empty. Also note that I am using @ Binding at the datafield of each DatagridColumn. My filter function is as such:

但是，例如当我使用此函数来过滤价格> = 9并在网格中显示数据时。使用XML Way 1时，它工作正常，但是当我使用XML Way 2时，datagrid是空的。另请注意，我在每个DatagridColumn的数据字段中使用@Binding。我的过滤功能是这样的：

private function myFilter(xml:XML):Boolean
            {
                return Number(xml.PRICE) >= 9;
            }

Thanks

谢谢

1 个解决方案

#1

In way number 2, the price is an atribute and not a subtag so it should be accessed with the @ symobl.

在数字2中，价格是属性而不是子标签，因此应该使用@ symobl访问它。

So for way 2, your filter function should be:

因此，对于方式2，您的过滤器功能应该是：

private function myFilter(xml:XML):Boolean
            {
                return Number(xml.@PRICE) >= 9;
            }

Notice the @ before PRICE.

注意PRICE之前的@。

#1