CODEWITHSUNDEEP
c#silverlightwindows-phone-7xamlwindows-8
Shaun Doty
Shaun Doty

Reputation: 125

targeting dynamic items within a stackpanel

I'm a little new to this sort of coding, but i am trying to access dynamically created TextBlock properties (like, TextBlock.Tag, Name, etc) within a StackPanel every tick of a timer. What i intend to do with each TextBlock is to see what its tag property is, and if it matches a conditoinal, for the timer to alter the TextBlock property in some way.

So it's a matter of finding a way to code every timer Tick: "For every TextBlock.Tag in StackPanel, if TextBlock.Tag == this, do this to the TextBlock."

Here is some code to help visualize what I am doing:

Xaml code:

<StackPanel Name="StackP" Margin="6,0,6,0"/>

C# code:

{
    for (var i = 0; i < MaxCountOfResults; ++i)
    {
        TextBlock SingleResult= new TextBlock { Text = Resultname.ToString(), FontSize = 20, Margin = new Thickness(30, -39, 0, 0) };

        //a condition to alter certain TextBlock properties.
        if (i == .... (irrelevant to this example))
        {
            SingleResult.Foreground = new SolidColorBrush(Colors.Yellow);
            SingleResult.Tag = "00001";
        }

        //Add this dynamic TextBlock to the StackPanel StackP
        StackP.Children.Add(SingleResult);
    }

//the timer that starts when this entire function of adding the TextBlocks to the StackPanel StackP tree is done.
Atimer = new Timer(new TimerCallback(Atimer_tick), 0, 0, 100);
}


public void Atimer_tick(object state)
{
       The area where I have no idea how to reference the Children of stackpanel StackP with every timer tick. I need help :(

}

Thank you guys. I am still learning this and the help is needed.

Upvotes: 1

Views: 248

Answers (1)

Sten Petrov
Sten Petrov

Reputation: 11040

you should be able to use timer, but I'd recommend using BackgroundWorker to perform a loop instead of timer events, which could collide. Even better - use SilverLight-style animations with triggers.

On the non-UI thread you'd want to use Dispatcher call to invoke your async code back on the UI thread, something like:

 Deployment.Current.Dispatcher.BeginInvoke(() =>
  {
    try
    {
        foreach (TextBlock txb in StackP.Children){
          txb.Text = "xyz";
        }
    }
    catch (Exception ex)
    {
      Debug.WriteLine("error: "+ex);
    } 
  });

Upvotes: 2

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