RE: [flexcoders] checkbox in datagrid with vertical slider bar

[Lisa Nelson]

I believe you are describing something different than what I am
describing.  The dataProvider starts off life with every element in a
"false" state, or unchecked.  You check one box.  Slide the bar.  And
other boxes in other rows magically check themselves.

 

________________________________

From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Alex Harui
Sent: Thursday, March 08, 2007 6:24 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] checkbox in datagrid with vertical slider bar

 

That's a common misunderstanding.  The checkbox is driven by properties
of the items in the dataprovider.  If you check a box and do not update
the dataprovider, then when the checkbox is forced to re-render after
scrolling it will not be checked.  The key is to use rendererIsEditor
and other related properties.

 

________________________________

From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Lisa Nelson
Sent: Thursday, March 08, 2007 2:12 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] checkbox in datagrid with vertical slider bar

 

 

 

If I check a box in a row other than the top row, and then slide the
vertical scroll bar down so that the rows go off the top, and then slide
it back up so that the rows that went off the top come back, rows that I
did not check now show up as checked.  Does anyone know if this is a
Flex bug or is it something I'm doing wrong?

 

            <mx:DataGridColumn id="applyCol" 

                                 headerText="&#13;Apply" 

                                 dataField="apply"

                                 itemRenderer="mx.controls.CheckBox"

                                 rendererIsEditor="true"

                                 textAlign="center"

                                 editable="true"

                                 editorDataField="selected"

                                 width="40"

                                 />