?
Solved

Label created in new thread wont display

Posted on 2008-10-06
4
Medium Priority
?
261 Views
Last Modified: 2012-05-05
Experts,

I have the following loop which is run in a new thread when the user clicks on start.  The label does not show, and I dont know why this is, although my messagebox does,  please help!
public static void RunLoop(int stop)
        {
            while (true)
            {
                if (stop == 1)
                {
                    break;
                }
 
                ArrayList serverlist = new ArrayList();
                serverlist = MySQLcontrol.GetServers();
 
                int x = 300;
                int y = 100;
                int count = 0;
                foreach (ServerObj so in serverlist)
                {
                    switch (so.ServerType)
                    {
                        case "Virus Scanner":
                            MessageBox.Show("HERE");
                            System.Windows.Forms.Label label = new System.Windows.Forms.Label();
                            label.Name = "label" + count.ToString();
                            label.Text = so.ServerName;
                            label.Location = new System.Drawing.Point(x, y);
                            label.Visible = true;
                            x = x + 50;
                            count++;
                            break;
                    }
                }
                Thread.Sleep(10000);
            }
        }

Open in new window

0
Comment
Question by:mhouldridge
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 8

Expert Comment

by:rambovn
ID: 22648684
System.Windows.Forms.Label label = new System.Windows.Forms.Label();
                            label.Name = "label" + count.ToString();
                            label.Text = so.ServerName;
                            label.Location = new System.Drawing.Point(x, y);
                            label.Visible = true;
this.Controls.Add(label);
or yourform.Controls.Add(label);

0
 

Author Comment

by:mhouldridge
ID: 22648702
Hi,

thanks for the info, but the intellisense  does not contain a reference for Contols, only ControlCollection.

0
 

Author Comment

by:mhouldridge
ID: 22649183
This is because I've added this to a new thread, and this new thread cant access the main thread which the form runs on.

0
 
LVL 26

Accepted Solution

by:
Anurag Thakur earned 1500 total points
ID: 22655575
threading in windows forms is a little bit peculiar and all the UI operations needs to be performed in the main therad and not in the child thread
please read the following article and it will make a few more things clearer
http://www.yoda.arachsys.com/csharp/threads/winforms.shtml
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
In this video, Percona Solutions Engineer Barrett Chambers discusses some of the basic syntax differences between MySQL and MongoDB. To learn more check out our webinar on MongoDB administration for MySQL DBA: https://www.percona.com/resources/we…
Suggested Courses

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question