Comments on: Flex – Preventing DataGrid scrolling when the dataprovider is updated.

By: Omer Etrog

Omer Etrog — Sun, 01 Nov 2009 06:27:38 +0000

Thank you, I have 3 bugs (well, for every datagrid is have different bug) on this issue

By: Paul

Paul — Tue, 28 Jul 2009 00:43:07 +0000

Thanks, this is exactly what I was looking for. I'll give it a try.

By: Pesse

Pesse — Wed, 15 Jul 2009 08:22:56 +0000

Hi,
Thanks for this snippet
Can you give me a hint how you use itemUpdated instead of this?
Would really appreciate it!

Greetings,
Pesse

By: joelhooks

joelhooks — Wed, 08 Jul 2009 19:24:25 +0000

Glad it saved you some hassle. It drove me crazy too

By: Matt

Matt — Wed, 08 Jul 2009 18:56:04 +0000

Thhhhhhhhhhhhaaaaaaaankkkk you!!!

My god, this saved me about 3 days work!

By: dj brikz

dj brikz — Thu, 28 May 2009 09:27:13 +0000

hi…thanks for the post…it works well in the application that i’m doing now. my application is fetching entries from the database and updates the datagrid every 1 second.

Wrap up solution:

1. Before updating the data provider of the datagrid, retrieve first the verticalScrollPosition and selectedItem properties of the datagrid.
2. Update the data provider of the datagrid.
3. Set again the datagrid verticalScrollPosition and selectedItem properties using the values you stored in step 1.
4. That’s all and enjoy.

By: tsedeke

tsedeke — Sun, 05 Apr 2009 10:43:15 +0000

Joel,
in some cases you are right, but if you have an application getting data from database where also many people work on, it is important to read all records after changing, cause not only your record may change.
In this situation you have no other chance, you have to remember your key of your record and after refresh find and select it again.
Cause today we are not able to make a specific record update in a Arraycollection from a database.
Ok you can do it, but it is not save and cause an overhead.

Thorsten

By: Chris

Chris — Sun, 11 Jan 2009 21:03:09 +0000

Joel,

could you post the code where this is implemented? This is something I have been looking for. Thanks for the help!

By: Joel

Joel — Fri, 30 May 2008 14:28:40 +0000

I’ve never seen it go to the bottom like that!

If you want it to go to the top, do this:

myDataGrid.selectedIndex = 0
myDataGrid.scrollToIndex(0)

That will reposition and select the first entry. To make it ’smart’ you want to record the position of the item you are deleting, and have it select/scroll there.

By: Hari

Hari — Fri, 30 May 2008 06:51:18 +0000

Hi, my datagrid is bound to an ArrayCollection which is the dataprovider. When I remove items from Arraycollection, the focus on the datagrid moves to the bottom of the grid which deiplays a blank row. I want the focus to be remained always at the top. Please let me know any way to solve this.