Using LINQ on ObservableCollection<t></t> - WPF Discussion Boards

Re: WPF ignores Storyboard.SpeedRatio or StoryBoard.SetSpeedRatio()

ABitSmart25-May-09 17:13

ABitSmart

25-May-09 17:13

softwarejaeger wrote:
StoryBoard.SetSpeedRatio(this.animationObject.Child as FrameworkElement, 0,5)

Couldn't find this overload with 3 parameters ?

Documentation[^] mentions containingObject to be "

The object specified when the Begin method was called. This object contains the Clock objects that were created for this storyboard and its children.

" Have you considered that ?

See here[^], might be of some interest

How to implement TV tunner in WPF application

Nekkantidivya25-May-09 4:31

Nekkantidivya

25-May-09 4:31

Hi,

I want to implement TV tuner component in WPF application.

Please if any one have idea how to do this please reply me.

Thanks in advance

Re: How to implement TV tunner in WPF application

Michael Sync23-Jul-09 20:40

Michael Sync

23-Jul-09 20:40

Sorry. Please ask WPF question in this forum[^]. Thank you!

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

Microsoft MVP (Silverlight), WPF/Silverlight Insiders

How to get weather report in silver light page

Nekkantidivya25-May-09 3:56

Nekkantidivya

25-May-09 3:56

Hi,

I am working on a silver light application. In this I have to display weather report i.e., weather forecast in my silver light application. In this we should have an option to display the weather report of any location that we select.

If any one have any idea how to solve this please reply me.

Thanks in advance.

Re: How to get weather report in silver light page

Mark Salsbery25-May-09 7:57

Mark Salsbery

25-May-09 7:57

What part are you having trouble with?

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

How open a webpage in silver light as webbrowser control

Nekkantidivya25-May-09 3:31

Nekkantidivya

25-May-09 3:31

Hi,
I developed a silverlight2.0 application. In this I have to open a web page from a silver light page like we open a web page using a web browser control.

I tried with

Browser.HtmlPage.Navigate("http://www.microsoft.com")

System.Windows.Browser.HtmlPage.Window.Navigate(new Uri("urlString"));

HtmlPage.Window.Navigate(new Uri("http://localhost:1780/MusicAlbum.aspx"));

but didn't worked in my application

If any one have any idea on this please reply me.

Thanks in advance.

Re: How open a webpage in silver light as webbrowser control

Mark Salsbery25-May-09 7:35

Mark Salsbery

25-May-09 7:35

What didn't work?

These all work for me:

// open in same window
System.Windows.Browser.HtmlPage.Window.Navigate(new Uri("http://www.microsoft.com"));
// open in new window
System.Windows.Browser.HtmlPage.Window.Navigate(new Uri("http://www.microsoft.com"), "_blank", "toolbar=no,location=no,status=no,menubar=no,resizable=yes");
// open in new tab
System.Windows.Browser.HtmlPage.Window.Navigate(new Uri("http://www.microsoft.com"), "_newWindow");
// open in new tab or window depending on browser settings
if (System.Windows.Browser.HtmlPage.IsPopupWindowAllowed)
{
    System.Windows.Browser.HtmlPage.PopupWindow(new Uri("http://www.microsoft.com"), "_blank", null);
}

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Using LINQ on ObservableCollection<t></t>

bluewavestrider25-May-09 1:26

bluewavestrider

25-May-09 1:26

Hello Guys, I thought I'll ask this question under the WPF forum since ObservableCollection is a WPF class.

I have a class Client of which I use to return a collection of clients from the database as an ObservableCollection:

ObservableCollection<Client> myClients = queries.GetClients();

where GetClients() is a method that returns a list of clients of type ObservableCollection<Client>

Now I use LINQ to run a search for clients as follows:

ObservableCollection<Client> filteredClients = null;
IEnumerable<Client> qry = from c in myClients
                          where c.Name.ToUpper().Contains(txtSearch.Text.ToUpper())
                          orderby c.Name
                          select c;

filteredClients = new ObservableCollection<Client>(qry);

Hence filteredClients is supposed to contain a subset of myClients of the same type ObservableCollection<Client>

My problem is that this works fine on my x64 vista/machine, but when I move it to my x86 vista/machine I get an error that:

Argument '1': cannot convert from 'System.Collections.Generic.IEnumerable<Client>' to 'System.Collections.Generic.List<Client>'

After poking around a bit, I discovered that in my Visual Studio (both machines run VS.NET 2008 on Framework 3.5) on the x64 machine,
the ObservableCollection<T> class has 3 overloads and one of them accepts an IEnumerable<T>, which is exactly what qry above is.

However, on my x86 as you can guess, there are only 2 constructors and IEnumerable<T> isn't one of the parameters. Just an empty overload and one that receives a List<T>

So then my question is why is there this disparity in the number of overloads on vista x64 platform and vista x86?
Does this mean that I would have to design an auxiliary class that'll return a List<T> from my backend rather than an ObservableCollection<T> for x86 platforms?

P.S:
That is just one of the compatibility problems I believe those of us building applications with WPF are facing. Another one I hit is that if I have a ListBox with a DataTemplate and I set its SelectedValuePath, it works fine on my x64 machine but appears null on my x86 machine.

My 2 pennies for other developers out there is that if you are building on x64 and it works great and looks good, please make sure you test on an x86 machine before hitting your customers

Thanks.

Live in fragments no longer. Only connect.

Re: Using LINQ on ObservableCollection

ABitSmart25-May-09 3:33

ABitSmart

25-May-09 3:33

Do you have .Net 3.5 SP1 on the x86 machine ? The IEnumerable overload was added with .Net 3.5 SP1.
MSDN[^]

If you want your app to run on both x64 and x86 then you should set the targetted CPU to x86 (default is Any). This will ensure it runs on both platform (although slower on x64 as it will run under WOW)

Re: Using LINQ on ObservableCollection

bluewavestrider25-May-09 10:17

bluewavestrider

25-May-09 10:17

Ok. Will try that. Thanks

Live in fragments no longer. Only connect.

silverlight

rajesh55525-May-09 0:38

rajesh555

25-May-09 0:38

Hai iam new to silverlight and i want one application of weather report in silverlight.
can any body know pls help plssss

How to: Select multiple elements inside a panel?

Kunal Chowdhury «IN»24-May-09 22:48

Kunal Chowdhury «IN»

24-May-09 22:48

Hi,

I need to select elements inside my panel using only mouse (by using Drag) just like we do in Windows Explorer. I want to click on any blank part of the panel & while dragging the mouse it should select all the elements inside that selected area.

Does anyone know, how I can achieve this using WPF 3.5? Please help me ASAP...

Regards,
- K (http://kunal2383.blogspot.com)

Re: How to: Select multiple elements inside a panel?

bluewavestrider25-May-09 2:12

bluewavestrider

25-May-09 2:12

Please specify what kind of panel you are using. Also, what are you using to show the elements, a ListBox?

Live in fragments no longer. Only connect.

Re: How to: Select multiple elements inside a panel?

Kunal Chowdhury «IN»25-May-09 2:14

Kunal Chowdhury «IN»

25-May-09 2:14

No, I am not using any ListBox.
I am using Canvas with Usercontrols.

Regards,
- K (http://kunal2383.blogspot.com)

Isolated Storage

Noam Maoz24-May-09 3:43

Noam Maoz

24-May-09 3:43

Hi,

How can I change the Isolated storage message/design windows when increasing the size of the isolated storage site?

Thanks,

Noam

Re: Isolated Storage

Mark Salsbery24-May-09 8:34

Mark Salsbery

24-May-09 8:34

Change the dialog that's presented to the user?

That's provided by the framework - you can't change it.

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Need some help to develop tetris game in asp.net as a web service using silverlight

mirza asim24-May-09 2:00

mirza asim

24-May-09 2:00

Hello Every One,
Confused | :confused:

I want to develop a tetris game, if some could hep me that is going to be great, i did some ground work on the game and need help to develop it.
I dont know which control will help in achieving this, I already downloaded on article but unable to understand coz it. It is form codeproject and the link for that article is
Silverlight Tetris[^]
Please i need some help for this Sniff | :^)

or else you can directly mail me at ma_asimali@yahoo.co.in

waiting for your valuable reply

Re: Need some help to develop tetris game in asp.net as a web service using silverlight

Ray Cassick24-May-09 4:57

Ray Cassick

24-May-09 4:57

The source code for that game is down loadable via the link at the top of the article. DL it, read through it and learn. The article is pretty well written and should go a long way to helping you understand how it works.

If you have specific question about a part that you don't understand ask them, but a blanket 'I can't understand the article so please help...' is not really going to yield you much.

LinkedIn[^] | Blog[^] | Twitter[^]

Re: Need some help to develop tetris game in asp.net as a web service using silverlight

mirza asim24-May-09 20:54

mirza asim

24-May-09 20:54

Thanks for reply
Do you mean the same link that i mentioned this my query.
if not please type the link.
The link that i mentioned is not well documented.
Because of which i am unable to follow the code.

waiting for your reply.

Docking a treeview

rehpot23-May-09 22:09

rehpot

23-May-09 22:09

Hi

I have created a very nice treeview for my WPF app, but i would like it to auto hide when not in use so that i have more screen space to work with, then when i hover over it it should come into view. Can anyone help me out with this small issue?

Re: Docking a treeview

ABitSmart24-May-09 21:37

ABitSmart

24-May-09 21:37

If you haven't already taken a look then WPF Docking Library[^] and AvalonDock[^]

How to develop Analog clock and Digital clock in WPF application

Nekkantidivya23-May-09 1:50

Nekkantidivya

23-May-09 1:50

Hi,

I have to develop Analog clock and Digital clock in WPF. These clocks should have an option to dynamically change the time format like IST,EST ect i.e., according to the location according to the user reqirement.

If any one have any idea on this please reply me.

Thanks in advance.

Re: How to develop Analog clock and Digital clock in WPF application

ABitSmart23-May-09 4:14

ABitSmart

23-May-09 4:14

Sure - Link[^]

Re: How to develop Analog clock and Digital clock in WPF application

Kevin McFarlane23-May-09 6:21

Kevin McFarlane

23-May-09 6:21

You're on form today! Smile | :)

Kevin

How to get weather information into my WPF application

Nekkantidivya22-May-09 21:36

Nekkantidivya

22-May-09 21:36

Hi,

I have a WPF application. In this i have to get the weather information of any place into my application. I came to know that by using webservices we can get the weathr information in to my application. By this I can display the weather information of any location.
If any one have any idea how to implement this please reply me soon.

Thanks in advance.

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