Comments by NeonMika (Top 39 by date)

Sorry, I didn't mention this. The poller task should run on the UI task so there is no cross-thread access on the list.
See my current solution if you want to know how i fixed it.

Futher I heard that not every task has it's own thread. So it's no good practice to put a thread to sleep inside a Task, because it could put other Tasks also to sleep...

But thanks for your input! :)

Okay, some extra input, just found the following (this wasn't mentioned in the german MSDN article)

[...]If you parse a date and time string by using a DateTimeFormatInfo object with customized settings that are different from those of a standard culture, use the ParseExact method instead of the Parse method to improve the chances for a successful conversion. A non-standard date and time string can be complicated and difficult to parse. The Parse method tries to parse a string with several implicit parse patterns, all of which might fail. In contrast, the ParseExact method requires you to explicitly designate one or more exact parse patterns that are likely to succeed.[...]

Could this have to do with my case?

Thanks, great answer! Made it very clear.

Is any exception thrown?
Is office installed on the machine? We had the problem that we had the .dll, but the dll is not working without an office installed.

What does this question has to do with a coding question&answer-board?

Reason for my vote of 5
I think this can help many beginners who have never worked with convertings to byte[].

Thanks!

I'm now @ my girlfriends place and not at home till tomorrow.
The differences are the this is the only one who is refering to another element (others link to their datacontext) and this one is using a number instead of string. So I trie another Path-writing-method tomorrow and will try to but the 0 in "". I hope it will work then..

That's the problem. It doesn't get called. I have some other self-written converters that work without problems.
And yes, in my app.xaml's Resources I have my Converters created.
Like this:
<local:greaterintegertovisibilityconverter x:key="GreaterIntegerConverter">

I think another thing I could try is to change the Path to Items.Count, but I used the VS "Binding-Wizard" who wrote this line.

Here an example on converters: http://www.codeproject.com/Articles/24330/WPF-Bind-to-Opposite-Boolean-Value-Using-a-Convert

No, it has to do with WPF. This kind of converters are used in-line in XAML to convert different things. They are basic WPF constructs (Yeah, you can use them without WPF too, but that's not the idea behind them)

Wow, this sounds really interesting.
I also love to develop in .Net, so this sounds really cool. I think I have to dig deeper into that topic.

I think that this should be just a little tool. And he already has the code. I don't think it is neccessary to change the whole application.
By the way: You are right. :)

I think what he means is that you don't have to download the whole application and install it on your PC, but you can just go a web page and the application is loading (Like a Java Applet). So a normal windows client and a web client in one.
As far as I know the answer is no. But I'm also interested in it :)

Hey, this looks great! Do you know something about it? Do I have many limitations using C# compared to Java? I never really heard about coding in C# on Android, so I'm interested :)
Thanks

As far as I have seen they have many examples on how to use it. Don't know if they have one for your problem, but I can imagine that they have at least something similar.
http://directshownet.sourceforge.net/about.html

You are right. But for example, my MixUpdater needs to use other classes like my MusicDownloadConnection, SortType, etc.. I always have to use them together if I need them in another application.
So the main thing I should keep in mind is that I should keep the "logic" decoupled from my "view", am I right in this? :)
I will have a detailed look on SOLID and I have 5 years of univerity comming up to my, I hope my skills will get better and better.

I really really appreciate your solution, thanks. Now I understand you way. :)
But this seems pretty much code to me for just updating one of my objects. I need a MixesList etc.

But my code is now working when I add a volatile to my MixUpdaterGoOn. If I have time I will I probably change my code to yours. Thanks! :)

Mixes is the ObserveableCollection which should be updated from the background thread. The dispatcher used in the background class is the ListBox's dispatcher.

The threads work is to download 25 objects and add it to my list. then it should go to sleep. And I want to have to possibility to say "Load 25 more" or to say "Stop completly".

Okay, so I have to write down the "tree". Thanks for your answer, 5*.

Do you use C# for this?
What kind of Library or .dll do you use?

Yeah, it's not sure. If you have problems working with XML try to search for some infos on XmlDocument.
As far as I know, you can work with some kind of selection on your RichtextBox. So you append your text to the box, then you select it via code and format the selected text.

Thank you for your example on DependencyProperty.
You opend my eyes for something else. I'm going to implement INotifyPropertyChanged on MainWindow and will set "DVDNameTextBox.DataContext = this".
So My DVDNameTextBox gets notified when I change myDVD and I don't need to use DependencyProperties.

Why did you have to "Improve your question" that way?

It works if my DataContext is never changed.
The problem is, that not a Property is changed, the problem is, that the whole DataContext gets changed and this is not recognized for some reason.

Thanks.

No, i don't need two-way-binding, I just want to presentate my value TO the GUI without changes to make.

I have in MainWindowData:

private Mix selectedDVD = null;
public Mix SelectedDVD
{
get { return selectedDVD; }
set
{
selectedDVD = value;
NotifyPropertyChanged("SelectedDVD");
}
}

On WindowLoaded I do:

MixNameTextBox.DataContext = Data.SelectedDVD;

My XAML looks the following:
<textblock name="DVDNameTextBox" verticalalignment="Center" text="{Binding Name, Converter={StaticResource ReplaceNullStringConverter},ConverterParameter='No mix selected'}">

And on ListBox.SelectionChanged (the ListBox to select the DVD):
Data.SelectedDVD = (DVD)e.AddedItems[0];

And on this line there is the problem: The program doesn't mind that the source was changed.
It doesn't change anything to implement INotifyPropertyChange on MyWindowData and/or on DVD.

Why doesn't my Textbox realise that it has a new DataSource?

Thanks!

I think you mean something similar to Intellisense or the dropdown menu in Word 2007 etc., am I right?

Does your user have admin rights?
Is any error thrown while using this methods?

Glad i could help :)

What's wrong with using DataSets?
Create two connections to the two databases.
Run your query on both and receive 2 DataTable if I'm right.
Now you can run row for row and compare the two datasets?

Probably you want to have a look at this: http://www.codeproject.com/Articles/361579/A-Beginners-Tutorial-for-Understanding-ADO-NET

Greets, Markus

Because it doesn't work (no expander on the bottom) and destroyes the functionality of my ScrollViewer.
But thanks for your idea.

That's working! Big thanks to you!

Thank you! That's exactly what I needed!
So setting the HorizontalScrollBarVisability restricts the ScrollBar, learned something new. Thanks again.

Thanks for giving me ideas of how to think about this problem, helped me.

Oh my god, have I been wrong all the last years? :D
Thanks so much, I always had in mind that it doesn't work, but thats great.

5*