C#

Coder (Hired) wrote:

As I said I my post-the value IS being set

Coder (Hired) wrote:

how does the worker notify it that progress changed?

private MethodInvoker GetConfigFileDownloadInvoker()
{
    MethodInvoker invoker = new MethodInvoker(delegate
    {
    });

    return invoker;
}

private MethodInvoker GetDatabaseDownloadInvoker()
{
    MethodInvoker invoker = new MethodInvoker(delegate
    {
    });

    return invoker;
}

private void DownloadDeviceFiles()
{
    DatabaseDownloaded = false;
    ConfigFileDownloaded = false;

    MethodInvoker invoker1 = GetConfigFileDownloadInvoker();
    MethodInvoker invoker2 = GetDatabaseDownloadInvoker();

    dialog = new DownloadDialog(invoker1, invoker2);
    dialog.Text = "Retrieving Mission Data";
    dialog.Progress1Caption = "Config File";
    dialog.Progress2Caption = "Database";
    dialog.StartPosition = FormStartPosition.CenterScreen;

    // Blocks and fires off the invokers
    dialog.ShowDialog(this);

    if (!ConfigFileDownloaded || !DatabaseDownloaded)
    {
        // TODO: Return to connection mode
        OnDisconnected(EventArgs.Empty);
    }
}

private void configWorker_DoWork(object sender, DoWorkEventArgs e)
{
    if (InvokeRequired)
    {
        var del = new configWorker_DoWorkDelegate(configWorker_DoWork);

        Invoke(del, new object[] { this, e });
    }
    else
    {
        dialog.ShowDialog(this);
        DownloadConfigFile();
    }
}

class Form1 : Form
{
    BackgroundWorker worker;
    DownloadDialog downloadDialog;

    public Form1()
    {
        InitializeComponent();

        worker = new BackgroundWorker();
        worker.WorkerReportsProgress = true;
        worker.ProgressChanged += worker_ProgressChanged;
        worker.DoWork += worker_DoWork;
        worker.RunWorkerCompleted += worker_RunWorkerCompleted;
    }

    void DownloadStartButton_Click(object sender, EventArgs e)
    {
        DownloadDeviceFiles();
    }

    void DownloadDeviceFiles()
    {
        worker.RunWorkerAsync();

        DownloadDialog downloadDialog = new DownloadDialog();
        downloadDialog.Text = "Retrieving Mission Data";
        downloadDialog.Progress1Caption = "Config File";
        downloadDialog.Progress2Caption = "Database";
        downloadDialog.StartPosition = FormStartPosition.CenterScreen;

        downloadDialog.ShowDialog(this);
    }

    void worker_DoWork(object sender, DoWorkEventArgs e)
    {
        e.Result = DownloadConfigFile() && DownloadDatabase();
    }

    void worker_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {
        // I didn't account for the fact here that you have two separate progressbars

        if (downloadDialog != null)
            downloadDialog.Progress1PercentDone = e.ProgressPercentage;
    }

    void worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
    {
        downloadDialog.Close();
        downloadDialog.Dispose();

        if (e.Result == true)
            // continue app
        else
            // close app
    }

    bool DownloadConfigFile() // same for DownloadDatabase()
    {
        // ... init ...

        while (true)
        {
            // downloadstuff

            worker.ReportProgress(percentDone);
        }

        return downloadSuccess;
    }
}

Eddy Vluggen wrote:

it isn't very helpful to have a 640x480 form resize to fill the entire 1024x768.