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]

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...TNGP10.phx.gbl

I hope this helps?

Cor
"Dayne" <d_**********@h otmail.com>

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

[Herfried K. Wagner [MVP]]

"Dayne" <d_**********@h otmail.com> schrieb:

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"

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/>