Home | Contact Us | FAQ | Search & Site Map | Link to Us
Sign In | Join | Other 45 Sites in Network
HomeAnnouncementsFree MagazinesWhite PapersSubmit Content
Discussion GroupsASP.NETWindows FormsLanguages.NET FrameworkVisual Studio.NET
Articles.NET FrameworkASP.NETToolsWindows Forms
.NET DirectoryOpen Source ProjectsUser GroupsWeb Resources
Related Topics
Visual Basic 6SQL ServerMS AccessOther DB ProductsMS Server ProductsMore Topics ...

.NET Forum / Windows Forms / WinForm General / February 2005

Tip: Looking for answers? Try searching our database.

child mdi forms in different threads

Thread view: 
Enable EMail Alerts  Start New Thread
Thread rating: 
yadavab - 14 Feb 2005 11:27 GMT
Hi,

I want to open up a number of child forms in my main mdi container form, but
I want the processing that will happen in each child to happen in a different
thread. I tried something like this:

ChildForm childForm = new ChildForm();
shildForm.MdiParent = this;
Thread thread = new Thread(new ThreadStart(childForm.Show));
thread.Start();

It workd fine for the first childForm, but the next one doesn't open up. It
just hangs. Is this how things are normally done or is there another way?

Thanks in advance.
Herfried K. Wagner [MVP] - 14 Feb 2005 13:03 GMT
"yadavab" <yadavab@discussions.microsoft.com> schrieb:
> I want to open up a number of child forms in my main mdi container form,
> but
[quoted text clipped - 10 lines]
> It
> just hangs. Is this how things are normally done or is there another way?

Show all the forms in the same thread (typically the applications main UI
thread).  Instance members of Windows Forms controls/forms are not safe for
multithreading, so you cannot create and show an MDI child form in a
separate thread.

More information:

Multithreading in Windows Forms applications
<URL:http://dotnet.mvps.org/dotnet/faqs/?id=multithreading&lang=en>

Signature

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


Free Magazines

Get these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...

Oracle MagazineNetwork ComputingComputer WorldBio-IT WorldeWeekInformation WeekInfosecurity
 
Sign In
Join
My Latest Posts
My Monitored Threads
My Blog
My Photo Gallery
My Profile
My Homepage

Start New Thread
Enable EMail Alerts
Rate this Thread



©2008 Advenet LLC   Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.