Help with Datagrid Column Creation

I'm trying to get a better understanding of how the Spark DataGrid component works so that I can create and extended version for one of my projects. One of the things that really has me stumped is how the datagrid sets up the columns based on the dataprovider when no explicit columns are defined. I've been able to debug through the datagrid initialization up to the point where the setter for dataprovider gets called. At that point my debug trace goes 'down the rabbit hole' so to speak, and when it comes back the columns are initialized but I can't figure out how. Could someone please point me to the Class/function that is actually responsible for creating the columns from the dataprovider if they are not defined explicitly?

I finally managed to track down the code I needed, it's in the commitProperties method of Grid.as (line 3555). That's the good news. The bad news is I still seem to be missing something. My understanding was, if the datagrid autogenerated the columns, those columns would be replaced if another collection of columns are defined for the datagrid at some later point. For some reason that doesn't seem to be happening for me.
The datagrid I'm working with is part of a larger component with a skin. The list of columns for the datagrid is bound to an ArrayList defined in the hostComponent of the skin. I can understand why the creation of the columns could happen before the binding from the host triggers, what I don't get is why they aren't overridden later. Any suggestions?

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In my list (SharePoint Server 2013) I have:
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quovadimus02 wrote:
> I'm having some problems with my columns in IE6. The
math is all correct and
> it lays out perfectly fine in firefox as expected. For
some reason IE6 seems
> to be doubling the numbers I assign as my margins. Can
anyone give me a tip as
> to what's wrong here before I trash this whole idea and
go with a old fashioned
> table.
>
> 2 columns.
> 15px left and right margins on the "left" column, 470px
wide
> 15px right margin on the "right"column, 455px wide
>
>
>
> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0
Transitional//EN"
> "
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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> <head>
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quote:
Originally posted by:
mlundy
I have beaten my brains trying to get a third column to
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markf12 wrote:
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Hi,
I have run into a Coldfusion problem that I was hoping you
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Each of these also if it is at the end of the tree will have
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- Secondly the way that I have created the category menu is
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- Finally I could not work out how to not create "parents" in
the tree if there is no products for the end child category.
Meaning that if there is for example a category > subcategory
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Here
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This should at least get you started in the right direction.
http://www.sitepoint.com/article/dynamic-menu-coldfusion
Bryan Ashcraft (remove brain to reply)
Web Application Developer
Wright Medical Technologies, Inc.
=============================
Macromedia Certified Dreamweaver Developer
Adobe Community Expert (DW) ::
http://www.macromedia.com/go/team
"shunnyboy" <[email protected]> wrote in
message
news:e2h9hs$kp5$[email protected]..
> Hi,
>
> I have run into a Coldfusion problem that I was hoping
you could help me
> with.
>
> What I am trying to solve is the dynamic creation of at
least 5 levels of
> categories for a menu built with Coldfusion, and if
possible an infinite
> amount
> of levels.

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They both worked perfectly
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