BackgroundWorker and comboBox.Items.Add(f)

[HahnTech]

Hi, I'm new to Threading and WPF and need some help Adding to my Combo Box. I Understand I can't touch the UI from a background thread I just cant seem to figure out the work around. I got This Far. You'll see a Combo1.Items.Add(f); That is throwing. If I can get a good example of how you are suppose to do something like this I'll have a chunk of code I can play with and learn from. Thank you very much For any help

private void button1_Click(object sender, RoutedEventArgs e)
{
string Server;
Server = cmdServers.SelectedItem.ToString();
FillApplicationCombo(Server);
}

void FillApplicationCombo( string Server)
{
int count;
string Path;
int Version;
string AppName;

        Path = @"\\\\" + Server + @"\\" + "DOCFOCUS";

        progressBar1.Minimum = 0;
        progressBar1.Maximum = \_DirectoryFiles.Count;

        \_Worker = new BackgroundWorker();
        \_Worker.WorkerReportsProgress = true;
        \_Worker.WorkerSupportsCancellation = true;
        \_Worker.DoWork += (s, args) =>
        {
            BackgroundWorker worker = s as BackgroundWorker;
            DirSearch(Path); //Gets All Files in the Path
           
            count = 0;
            foreach (string f in \_DirectoryFiles)
            {
                count++;
                worker.ReportProgress(count);
                

                AppName = FileVersionInfo.GetVersionInfo(f).ProductName;
                if (AppName == null)
                    continue;

                if (AppName.ToUpper().IndexOf("MYAPPNAME") == -1)
                    continue;

                Version = FileVersionInfo.GetVersionInfo(f).ProductMajorPart;//FileVersion;
                
                if (Version == 6)
                {

                    Combo1.Items.Add(f);//What should I do about this?
                    
                }
            }
        };

        \_Worker.RunWorkerCompleted += (s, args) =>
        {
            progressBar1.Value = 0;
        };

        \_Worker.ProgressChanged += (s, args) =>
       {
           progressBar1.Value = args.ProgressPercentage;
       };

        \_Worker.RunWorkerAsync();

    }

Ronald Hahn, CN

[realJSOP]

You have to setup a delegate,

private delegate void DelegateUpdateCombo();

create a method that matches it,

private void MyMethod()
{
// do something
}

and then use this in your thread event handler:

DelegateUpdateCombo method = new DelegateUpdateCombo(MyMethod);
comboBox.Dispatcher.Invoke(myMethod);

.45 ACP - because shooting twice is just silly
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"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
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"The staggering layers of obscenity in your statement make it a work of art on so many levels." - J. Jystad, 2001

[HahnTech]

Thanks. That did it :)

Ronald Hahn, CNT - Computer Engineering Technologist