Backgroundworker to populate a TreeView

Dave Wurtz

All,

I have a treeview on my form that has a lot of nodes on it. I would
like to populate this treeview on another thread so my form will still
paint while it is being populated.

I have looked at the Backgroundworker object (and dragged one onto my
form) and several other newsgroup threads. What I don't understand is
that I can't access the treeview control in the sub that is handling
the DoWork event (I get the error that I can't access a control that
was created on a different thread.). How do I add my nodes to the
control if it is on a different thread. I'm probably missing something
obvious here!

Please help!

Thanks in advance!

Dave Wurtz
Advanced Software Designs

Feb 8 '06 #1

Brian Henry

if you are on .NET 2.0 why not just use a virtual list view? it would let
you have virtualy unlimited number of nodes show up instantly

"Dave Wurtz" <da********@asdsoftware.com> wrote in message
news:11*********************@f14g2000cwb.googlegro ups.com...

All,

I have a treeview on my form that has a lot of nodes on it. I would
like to populate this treeview on another thread so my form will still
paint while it is being populated.

I have looked at the Backgroundworker object (and dragged one onto my
form) and several other newsgroup threads. What I don't understand is
that I can't access the treeview control in the sub that is handling
the DoWork event (I get the error that I can't access a control that
was created on a different thread.). How do I add my nodes to the
control if it is on a different thread. I'm probably missing something
obvious here!

Please help!

Thanks in advance!

Dave Wurtz
Advanced Software Designs

Feb 8 '06 #2

Carlos J. Quintero [VB MVP]

Hi Dave,

Before looking at the Backgroundworker class of .NET 2.0, take a look at the
basics and once you understand it you can take advantage of that class of
..NET 2.0:

Resources about asynchronous operations
http://www.mztools.com/resources_net...nousOperations

--

Best regards,

Carlos J. Quintero

MZ-Tools: Productivity add-ins for Visual Studio
You can code, design and document much faster:
http://www.mztools.com
"Dave Wurtz" <da********@asdsoftware.com> escribió en el mensaje
news:11*********************@f14g2000cwb.googlegro ups.com...

All,

I have a treeview on my form that has a lot of nodes on it. I would
like to populate this treeview on another thread so my form will still
paint while it is being populated.

I have looked at the Backgroundworker object (and dragged one onto my
form) and several other newsgroup threads. What I don't understand is
that I can't access the treeview control in the sub that is handling
the DoWork event (I get the error that I can't access a control that
was created on a different thread.). How do I add my nodes to the
control if it is on a different thread. I'm probably missing something
obvious here!

Please help!

Thanks in advance!

Dave Wurtz
Advanced Software Designs

Feb 9 '06 #3