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On the right datagrid I have the data provider set to a public bindable
array collection of NotifySchoolCorporations.
When a potential user clicks the button that moves an entry from the
left to the right I have the following code:
var TempObj:Object = new Object();
TempObj.ID = AvailableSchoolCorporations.selectedItem.ID;
TempObj.Name = AvailableSchoolCorporations.selectedItem.Name;
NotifySchoolCorporations.addItem(TempObj);
The Array Collection for the Left DataGrid is
AvailableSchoolCorporations which is populating and when I click on one
Entry and click the Button, in my Alert.show line I see the value of
TempObj.ID and TempObj.Name which is the values of the item I have
selected. When I run the application I am getting an error message of:
Error #1009: Cannot access a property of a null object reference on line
46. Line 46 is the NotifySchoolCorporations.addItem(TempObj);
Dave Watts wrote:
|> I am working on a new flex application which on my stage is 2
|> DataGrids separated by 2 buttons. One of hte buttons has an
|> arrow pointing to the right and the other button has an arrow
|> pointing to the left. The datagrid on the left hand side is
|> populated via a Coldfusion CFC that lists all of the Business
|> within a 25 mile radius of a specific zipcode.
|>
|> Now when I click on one of these businesses and click t he
|> button with the arrow pointing to the right, I am able to
|> display the Business in the Right datagrid with the following
|> bit of code.
|>
|> private function updateSchoolCorpNotify():ArrayCollection {
|> ~ var arr:Array = [];
|> ~
|> arr.push({Name:AvailableSchoolCorporations.selectedItem.Name,I
|> D:AvailableSchoolCorporations.selectedItem.ID});
|> ~ return new ArrayCollection(arr);
|> }
|
| Create two ArrayCollection objects. On the event that moves records
from one
| datagrid to the other, find the selected item in the left grid, then use
| addItem to create a corresponding item in the second - your function
should
| not return an ArrayCollection or anything at all, really.
|
| Dave Watts, CTO, Fig Leaf Software
| http://www.figleaf.com/
|
| Fig Leaf Training: Adobe/Google/Paperthin Certified Partners
| http://training.figleaf.com/
|
| WebManiacs 2008: the ultimate conference for CF/Flex/AIR developers!
| http://www.webmaniacsconference.com/
|
|
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