Silverlight 2 (beta1) Known Issues and workarounds (if any) - WPF Discussion Boards

Re: Is WPF TreeView binding supposed to work like this (no collapse triangle)? Found the solution

3-Apr-08 7:44

Glad to help out.

I'm a VB.NET geek so digging into the C# code is good for me. Cool | :cool:

Cheers, Karl

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modified 27-Feb-21 21:01pm.

artwallacex3-Apr-08 8:00

artwallacex

3-Apr-08 8:00

Heh, it was funny that you posted your TreeView article at the beginning of this thread. It was through that article that I read your mentoring article, which was what got me trying to nail down the problem in this sample application (mentorees "Do your own homework"/"forces you to study and carefully review your topic")!

It's a small world.

Re: Is WPF TreeView binding supposed to work like this (no collapse triangle)? Found the solution

User 2710093-Apr-08 8:07

Table like control to set width in percentages

3-Apr-08 8:07

This means we are having a good day then. Cool | :cool:

The homework business normally translates to, "please check Google, then post question."

Just glad we got you on the right track.

Cheers, Karl

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» Microsoft MVP - Client App Dev

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modified 27-Feb-21 21:01pm.

djdajo2-Apr-08 22:13

djdajo

2-Apr-08 22:13

Hi all,

I'm fiddling around with WPF quite a bit, but i can't seem to get this working:

I want four controls in a horizontal row (expanders in this case) to each have 1/4 (25%) of the width of the entire screen (so horizontally they fill up the whole screen, even when resizing..)
But here's the catch, the expanders are filled with icons, so when i set width to auto, the expander gets the width depending on how many icons (images) are in the expander's content..

I tried using a grid with colums, but i didnt find out how to set the width to 25% of each column, is there ven a way to do this? Or does another control do what i want? Also tried a stack/wrappanel, but it didnt work out..

Thx

Re: Table like control to set width in percentages

artwallacex2-Apr-08 22:49

artwallacex

2-Apr-08 22:49

Would a UniformGrid work for you there?

Re: Table like control to set width in percentages [modified]

djdajo2-Apr-08 22:53

djdajo

2-Apr-08 22:53

I just read something about this, will see if it works, thx!

/does exactly the same as a normal grid..

Example of what im doing:

<br />
<br />
<grid><br />
<br />
<expander content="{Staticresource somecontent}" /><br />
<Expander content="{Staticresource somecontent2}" /><br />
<Expander content="{Staticresource somecontent3}" /><br />
<Expander content="{Staticresource somecontent4}"/><br />
<br />
</grid><br />

The resource content is something like this:

<br />
<image /><br />
<image /><br />
<image /><br />
...<br />
<image /><br />

Each expander resizes now to the amount of content (images) in them, which is different for each 1..

Found a solution:
<Grid.ColumnDefinitions>
<ColumnDefinition Width="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Grid}, AncestorLevel=2}, Path=ColumnDefinitions[0].Width}" />
<ColumnDefinition Width="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Grid}, AncestorLevel=2}, Path=ColumnDefinitions[1].Width}"/>
<ColumnDefinition Width="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Grid}, AncestorLevel=2}, Path=ColumnDefinitions[2].Width}"/>
<ColumnDefinition Width="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Grid}, AncestorLevel=2}, Path=ColumnDefinitions[3].Width}"/>
</Grid.ColumnDefinitions>

modified on Friday, April 11, 2008 3:48 AM

Silverlight 2 (beta1) Known Issues and workarounds (if any)

Michael Sync2-Apr-08 4:17

Michael Sync

2-Apr-08 4:17

For those who are not aware of known issues of Silverlight 2 beta1. I have been collecting those issues since SL 2 b1 release. I hope that it will save some of your times...

Silverlight 2 (beta1) Known Issues and workarounds (if any)[^]

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

Re: Silverlight 2 (beta1) Known Issues and workarounds (if any)

User 2710092-Apr-08 9:35

Re: Silverlight 2 (beta1) Known Issues and workarounds (if any)

2-Apr-08 9:35

Michael,

Thanks for this post.

Cheers, Karl

» CodeProject 2008 MVP
» Microsoft MVP - Client App Dev

My Blog | Mole's Home Page | MVP Profile

Just a grain of sand on the worlds beaches.

modified 27-Feb-21 21:01pm.

User 27100911-Apr-08 21:45

Re: Silverlight 2 (beta1) Known Issues and workarounds (if any)

11-Apr-08 21:45

Michael,

I have run into a number of Silverlight bugs related to LostFocus and Data Binding.

This blog post has two videos that demonstrate the problems and a demo application is provided also.

http://karlshifflett.wordpress.com/2008/04/12/silverlight-2-lostfocus-and-data-binding-bugs/[^]

Have a great day!

Cheers, Karl

» CodeProject 2008 MVP
» Microsoft MVP - Client App Dev

My Blog | Mole's Home Page | MVP Profile

Just a grain of sand on the worlds beaches.

modified 27-Feb-21 21:01pm.

Michael Sync12-Apr-08 4:18

Michael Sync

12-Apr-08 4:18

thanks. I saw your post in Silverlight forum.. I will add your link in my post too.

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

Re: Silverlight 2 (beta1) Known Issues and workarounds (if any)

User 27100912-Apr-08 4:20

DoublePost from C# Forum ... SetCooperatiionLevel with DirectX

12-Apr-08 4:20

Thanks!

Cheers, Karl

» CodeProject 2008 MVP
» Microsoft MVP - Client App Dev

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modified 27-Feb-21 21:01pm.

Jammer30-Mar-08 11:19

30-Mar-08 11:19

Hi All,

I'm just doing some work in DirectX and have a referencing question. Using this method on a device needs a handle to the main apps window the problem with that was my directX layer was referenced by the presentation layer so to actually set this to my apps mainwindow class i've had to reference the presentation layer from the audiolayer ...

Does it actually make sense to reference this way around or is there a better solution to this issue?

This is a WPF window and unlike WinFOrms (as far as I can tell) this isn't showing me a Handle property to specify, any advice on that would be great.

EDIT -

Have been doing a bit more digging at it seems that my fix is the way to go. Since WPF windows are essentially DirectX setting the SetCooperativeLevel to System.IntPtr.Zero is the way to go ...

Has anyone else done any DirectX work with WPF yet?

Jammer

Going where everyone here has gone before! Smile | :)

Re: DoublePost from C# Forum ... SetCooperatiionLevel with DirectX

Thomas Stockwell2-Apr-08 15:32

Thomas Stockwell

2-Apr-08 15:32

As I understand it, WPF is basically a DirectX wrapper for .NET. I don't believe that native DirectX can be combined with WPF Direct X and have them cooperate with each other. Good luck either way.

Regards,
Thomas Stockwell

Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

Visit my homepage Oracle Studios[^]

Re: DoublePost from C# Forum ... SetCooperatiionLevel with DirectX

Jammer3-Apr-08 7:42

3-Apr-08 7:42

Hi Thomans,

The working example I have here at the moment is using this code:

public static void PlayAudioFile(string _fileName)
{
    DevicesCollection soundcards = new DevicesCollection();
    Device dSound = new Device();
    WindowInteropHelper wih = new WindowInteropHelper(Application.Current.MainWindow);
    dSound.SetCooperativeLevel(wih.Handle , CooperativeLevel.Priority);
    BufferDescription d = new BufferDescription();

Although that said I think I need to place all this audio in its own thread as there are currently some audio hiccups happening. Sometimes an audio file will play through fine other times it plays a short burst and then stops so this isn't fully functioning code yet.

Jammer

Going where everyone here has gone before! Smile | :)

DataGridView wpf style [modified]

yanairon30-Mar-08 4:29

yanairon

30-Mar-08 4:29

is there any reference of building a datagrid in wpf from scratch?
by data grid i mean the following example requirments:

DataBinding,
sorting,
filtering,
drag&drop,
column add+remove, order
row\column selection\click
tooltips
diferent cells styles with diferent control
...

i mean a whoooooole Data Grid View wpf style - (i.e DevEx's XtraGrid)

any thoughts?
thanks,
yanai

modified on Sunday, March 30, 2008 10:41 AM

Pete O'Hanlon30-Mar-08 8:33

Pete O'Hanlon

30-Mar-08 8:33

I suppose you could always buy the source to somebody else's implementation, or (and here's a thought) you could figure out how to implement it for yourself. It would be a great journey for you (and if you start small and basic it shouldn't be beyond you) and you will have the pleasure of becoming a WPF master as a result.

Good luck.

Deja View - the feeling that you've seen this post before.

My blog | My articles

Rob Philpott31-Mar-08 4:14

Rob Philpott

31-Mar-08 4:14

Well you know, I'm curious about this too. Looking around the net shows that people are asking a lot about grid controls in WPF, and all links seem to point to XCeed's offering.

But a lot of what you read about WPF tells you that its not always necessary to create a new control to get what you want. You can combine and customise them all to get what you're after. In Windows Forms you'd buy or build but it doesn't seem so clear cut with WPF.

I built a GDI+ grid recently when the place I work refused to buy one, simple but effective and no problem because I can remember Petzold first time round, but being new to WPF I'm somewhat stumped as well.

What would you do Pete if you had to display tabular data in WPF, buy a control or go about building one?

Regards,
Rob Philpott.

Jammer31-Mar-08 7:23

31-Mar-08 7:23

Thinking about it ... a really quick dirty way might be to use nested stack panels and borders ...

Jammer

Going where everyone here has gone before! Smile | :)

Re: Charting/Graphs in WPF

Pete O'Hanlon31-Mar-08 8:45

Pete O'Hanlon

31-Mar-08 8:45

Rob Philpott wrote:
What would you do Pete if you had to display tabular data in WPF, buy a control or go about building one?

It depends on what I was trying to do with it. If it wasn't too complicated then I'd look at extending the ListView - the beauty of templates is that you can turn something like the listview into a grid control without too much effort. Mind you, I do use Xceed WPF Grid as well - it's very nice (and free too in the basic version, always a plus point with me).

Deja View - the feeling that you've seen this post before.

My blog | My articles

Charting/Graphs in WPF

BlitzPackage30-Mar-08 3:34

BlitzPackage

30-Mar-08 3:34

Greetings,

Are there any charting/graphing providers for WPF (i.e. like Dundas Charts)?

Thank you.

BP

Jammer30-Mar-08 11:33

30-Mar-08 11:33

Yes ... I'm currently using Infragistics ... althought we have two new ones on the market now as well.

ComponentOne have just released their WPF stuff and Xceed have their WPF stuff out too. ChartFX also have a WPF component but its still in beta and has been for what seems like years.

I have only worked a lot with the Infragistics solution which works well. Good support too. Interestingly I have also spoken to Nevron a lot ... they seem to be almost shunning WPF in favour of actually writing a graphics engine of their own in order to then display that in a hosted fashion within WPF as they seem to think that WPF doesn't have the performance capability.

I'm using the Infragistics datagrid with 60,000+ rows bound to it with no problems. Check them all out on these links ...

http://www.infragistics.com/[^]

http://www.softwarefx.co.uk[^]

http://xceed.com/Grid_WPF_Intro.html[^]

http://www.componentone.co.uk[^]

http://www.nevron.com/Nevron.Home.aspx[^]

Jammer

Going where everyone here has gone before! Smile | :)