Improve the code for ShowAutoClosingTaskDialog in TaskDialogDemo Form1 (vb & c#)

[elGuille-info]

Improve the code for ShowAutoClosingTaskDialog in TaskDialogDemo Form1 (vb & c#)

In the example of ShowAutoClosingTaskDialog it only works well with 5 seconds or less, to make that example easier to understand or if more than 5 seconds of waiting are used, a couple of code changes would have to be made in both Form1.cs as in Form1.vb.

Issue:

The sample code fails when the result of remainingTenthSeconds * 2 is greater than 100.

The sample code fails when a value of more than 5 seconds is used, since when assigning the value of remainingTenthSeconds = seconds * 10, the maximum value of the progress bar turns out to be less than the resulting value of: remainingTenthSeconds * 2.

The actual code is:

For C#

page.ProgressBar.Value = 100 - remainingTenthSeconds * 2;

For VB:

page.ProgressBar.Value = 100 - remainingTenthSeconds * 2

Solution:

The new update code should be something like this:

For C#:

// Set then maximum value for the ProgressBar
var maximum = remainingTenthSeconds * 2;
page.ProgressBar.Maximum = maximum;

// Create a WinForms timer that raises the Tick event every tenth second.
using (var timer = new Timer()
{
    Enabled = true,
    Interval = 100
})
{
    timer.Tick += (s, e) =>
    {
        remainingTenthSeconds--;
        if (remainingTenthSeconds > 0)
        {
            // Update the remaining time and progress bar.
            page.Text = string.Format(textFormat, (remainingTenthSeconds + 9) / 10);
            page.ProgressBar.Value = maximum - remainingTenthSeconds * 2;
        }
        else
        {
            // Stop the timer and click the "Reconnect" button - this will
            // close the dialog.
            timer.Enabled = false;
            reconnectButton.PerformClick();
        }
    };

    TaskDialogButton result = TaskDialog.ShowDialog(this, page);
    if (result == reconnectButton)
        Console.WriteLine("Reconnecting.");
    else
        Console.WriteLine("Not reconnecting.");
}

For VB:

' Set then maximum value for the ProgressBar
Dim maximum = remainingTenthSeconds * 2
page.ProgressBar.Maximum = maximum

' Create a WinForms timer that raises the Tick event every tenth second.
Using timer = New Windows.Forms.Timer() With {
    .Enabled = True,
    .Interval = 100
    }
    AddHandler timer.Tick,
        Sub(s, e)
            remainingTenthSeconds -= 1
            If remainingTenthSeconds > 0 Then
                ' Update the remaining time and progress bar.
                page.Text = String.Format(textFormat, (remainingTenthSeconds + 9) \ 10)
                page.ProgressBar.Value = maximum - remainingTenthSeconds * 2
            Else
                ' Stop the timer and click the "Reconnect" button - this will
                ' close the dialog.
                timer.Enabled = False
                reconnectButton.PerformClick()
            End If
        End Sub

    Dim result As TaskDialogButton = TaskDialog.ShowDialog(Me, page)
    If result = reconnectButton Then
        Console.WriteLine("Reconnecting.")
    Else
        Console.WriteLine("Not reconnecting.")
    End If
End Using

Hope this helps.
Guillermo

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Issue metadata

• Issue type: sample-update