The following example shows how you can create a custom sort on a Flex DataGrid control by using the SortField class and creating a custom compare function.
Full code after the jump.
Continue reading ‘Creating a custom sort on a DataGrid control in Flex’
The following example shows how you can perform numeric sorts, case sensitive sorts, or case insensitive sorts in the Flex DataGrid control by setting a custom sort compare function on the DataGridColumn using the sortCompareFunction property, the static ObjectUtil.numericCompare() method, and the static ObjectUtil.stringCompare() method.
Full code after the jump.
Continue reading ‘Performing case [in]sensitive sorts using the DataGrid control in Flex’
The following example formats a column in a Flex DataGrid and uses a custom item renderer to color the text red in a cell if a price is below $0. If the item is greater than $0, the test is displayed in black. The price column is also formatted using a custom label function, which uses a CurrencyFormatter, and finally, the data grid column uses a custom sort function to properly sort numeric columns.
Full code after the jump.
Continue reading ‘Formatting a Flex DataGrid control using a custom item renderer’
Here’s an example of sorting a column of dates in a Flex DataGrid. The dates start out as Strings (such as “04/14/1980″) so you create a custom sortCompareFunction on that DataGrid column which converts the strings to dates so Flex will sort the dates in sequential order (as oppsed to string order). Hope that helps somebody out there.
I also created a little tooltip on the date column which shows the dates in a somewhat more readable form (”April 14 1980″) using the DataGridColumn object’s showDataTips and dataTipFunction properties.
Full code after the jump.
In the previous post we looked at how to load an XML document in at compile-time and have it embedded in our Flex application. But that technique really only works if the XML data in question never changes. What if you had an XML document that was constantly changing on a daily, or hourly, basis. For example, consider an RSS reader application. If the XML was loaded and embedded in the XML document at compile-time, the RSS would never get updated. And while that may be good in some cases (such as a kiosk, or somewhere without an internet connection where you wanted to display static information), in many cases it may not work.
So, lets take a look at using the mx:HTTPService tag to dynamically load an XML file.
Continue reading ‘Loading XML at run-time using the mx:HTTPService tag’
OK, hopefully this example is a bit more interesting than a few of my previous ones. Today’s handy tip comes in the form of loading and embedding an XML file in our Flex application at compile-time (as opposed to dynamically loading at run-time, which we’ll save for a future example), and displaying that information in a DataGrid control.
