C# Windows Forms: GUI and multiple threads

Consider the following:

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 namespace TestingStuff

{

    public partial class MainForm : Form

    {

        ToolStripStatusLabel toolStripStatusLabel = new ToolStripStatusLabel();
 
        abstract class Tab

        {

            public TabPage tabPage;

            protected MainForm form;

            public virtual void Refresh() { }

        }
 
        public MainForm()

        {

            TabPage tabPageInfo = new TabPage();

            InfoTab info = new InfoTab(this, tabPageInfo);

        }
 
        public void refreshGUI()

        {

            toolStripStatusLabel.Text = "OK";

        }
 
    }
 
public partial class MainForm

{

    class InfoTab : Tab

    {

        internal InfoTab(MainForm form, TabPage tab)

        {

            this.form = form;

            this.tabPage = tab;    

        }
 
        public override void Refresh()

        {

            form.toolStripStatusLabel.Text = "Info";

        }

    }

}

}

If I wanted to start the InfoTab.Refresh() - method in a separate thread, how would I do that? And is then 'if(InvokeRequired)' checks and delegates required since I know you must never use any member of a Control on any thread other than the one that created it?

Any input to enlighten me is highly appreciated!
Cheers!

Nov 20 '07 #1

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2587

Shashi Sadasivan

1,435

Expert 1GB

You could use a background worker to act as a thread for you.

the invoke required method should be used if you are changinf any UI based elements (that is elements owned in the main thread)
if that is false then you can change it, else I generally skip it.

Nov 21 '07 #2

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