windows form not displaying

[Dayne]

Briefly this is my problem .

I created a windows form on a "parent thread" .. then I called a child
thread 1 to make it visible then hide it on that same thread .. then kill
child thread 1 ... then try to make the form visible on child thread 2 ..
However, the form will not display either on child thread 2 or "parent
thread" ... Any idea why this is? Please help

DT

[Cor Ligthert]

Re: windows form not displaying

Dayne,

Maybe can this sample I made a while ago help you in this.

It is showing an extra form (two times the same) with a thread and withouth
a thread

http://groups.google.com/groups?selm=e5tMW8DsEHA.3276%40TK2MSFTNGP10.phx.gbl

I hope this helps?

Cor
"Dayne" <d_jermaine_t@h otmail.com>
[color=blue]
> Briefly this is my problem .
>
> I created a windows form on a "parent thread" .. then I called a child
> thread 1 to make it visible then hide it on that same thread .. then kill
> child thread 1 ... then try to make the form visible on child thread 2 ..
> However, the form will not display either on child thread 2 or "parent
> thread" ... Any idea why this is? Please help
>
> DT
>
>[/color]

[Herfried K. Wagner [MVP]]

Re: windows form not displaying

"Dayne" <d_jermaine_t@h otmail.com> schrieb:[color=blue]
> I created a windows form on a "parent thread" .. then I called a child
> thread 1 to make it visible then hide it on that same thread .. then kill
> child thread 1 ... then try to make the form visible on child thread 2 ..
> However, the form will not display either on child thread 2 or "parent
> thread"[/color]

Always show your forms in the app's main UI thread. You can use
'Control.Invoke '/'Control.BeginI nvoke' to communicate in the thread -> UI
direction.

More information:

Multithreading:

<URL:http://msdn.microsoft. com/library/en-us/dnforms/html/winforms0611200 2.asp>
<URL:http://msdn.microsoft. com/library/en-us/dnforms/html/winforms0816200 2.asp>
<URL:http://msdn.microsoft. com/library/en-us/dnforms/html/winforms0123200 3.asp>

<URL:http://www.devx.com/dotnet/Article/11358/>

<URL:http://msdn.microsoft. com/library/en-us/cpref/html/frlrfSystemWind owsFormsControl ClassInvokeTopi c.asp>

Multithreading in Visual Basic .NET (Visual Basic Language Concepts)
<URL:http://msdn.microsoft. com/library/en-us/vbcn7/html/vaconthreadingi nvisualbasic.as p>

Sample:

<URL:http://dotnet.mvps.org/dotnet/samples/filesystem/downloads/FileSystemEnume rator.zip>

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://dotnet.mvps.org/dotnet/faqs/>