Comments on: Understanding Flex 3 Migration Issues (Part I)

By: jlafferty

jlafferty — Wed, 19 Nov 2008 22:04:19 +0000

@lakshmikanth :
1) You will want to use a custom headerRenderer. You can find an example here: http://blogs.adobe.com/aharui/item_renderers/ There will not be an extra row above the header, but, you can make it look like its an extra row.
2) An itemRenderer has to apply to an entire column. However, if you control what the itemRenderer does according to its data, then, you should be able to get it change behavior only for one row. For example, if you want the row with data.quantity=0 to have a red background, then you would use the same itemRenderer in each column. In that itemRenderer, you would override the set data function. In the set data function, you would check the data for data.quantity==0. If that is true, you’d draw a red background. Hope that helps.

Joan

By: lakshmikanth

lakshmikanth — Mon, 17 Nov 2008 15:37:27 +0000

1. I want to add one row above the datagrid header is that possible ?
2. I want to put the item renderer for only one row ?

expecting the reply .

thank you friends.

By: Graeme

Graeme — Mon, 15 Sep 2008 14:42:19 +0000

Thanks for the info on migration 2 to 3. You saved me lots of time scratching my head (being new to flex and having migration as my first job). I found that when dealing with DataGrid, after migration – whatever row item click event I selected the pop-up would show info for the row immediately above, and I could not select the first row.
In the click event’s function I found the code read “selMetricName = searchedMetricsAC[event.rowIndex-1].Column4;” having many similar entries. I found that by deleting ‘-1′ thereby having the code read “selMetricName = searchedMetricsAC[event.rowIndex].Column4;” I made the application work. I’m not sure if this is what you refered to in your text above.

Cheers.

By: dok

dok — Thu, 11 Sep 2008 06:21:56 +0000

Thank you!

By: ADRIAN DESS

ADRIAN DESS — Wed, 03 Sep 2008 08:10:01 +0000

I will be very happy if Flex Team at least could confirm the bug or come out with workaround.
Thank you!

By: serfman

serfman — Mon, 18 Aug 2008 07:27:58 +0000

Thank you!

By: jlafferty

jlafferty — Wed, 02 Jul 2008 21:32:03 +0000

@prashant: Can you give more details about your DataGrid? Are you using a custom itemEditor? If you want, you can file a bug at http://bugs.adobe.com/flex. Post the bug # here and I can take a look. – Joan

By: prashant shelke

prashant shelke — Wed, 02 Jul 2008 05:27:54 +0000

Hi,

I have just migrated my project to flex 3.0, I have resolved few warnings for resourceBundle. But Some editable dataGrid cell onFocusOut causing this error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at mx.controls::DataGrid/destroyItemEditor()
at mx.controls::DataGrid/itemEditorItemEditEndHandler()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.core::UIComponent/dispatchEvent()
at mx.controls::DataGrid/endEdit()
at mx.controls::DataGrid/collectionChangeHandler()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.collections::ListCollectionView/dispatchEvent()
at mx.collections::ListCollectionView/replaceItemsInView()
at mx.collections::ListCollectionView/listChangeHandler()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.collections::ArrayList/setItemAt()
at mx.collections::ListCollectionView/setItemAt()
Which results in closing of browser
Can u please suggest any help ?
Thanks.

By: jlafferty

jlafferty — Wed, 07 May 2008 17:01:38 +0000

I’m not sure of about this problem. You might want to try asking on flexcoders. Also, search the bugbase for this error. What is the purpose of web.xml? Is this the dataProvider of your AdvancedDataGrid? Are you using LCDS?

By: Sylvester

Sylvester — Wed, 07 May 2008 13:16:08 +0000

there was a typo in line 4 …in the prev message…
in web.xml
i meant the welcome-file-list tag..if i give it as MainPage.mxml