WPF Discussion Boards

Re: Silverlight 3 - While validation it breaks the application and shows the error

dwadasi11-Apr-10 18:57

dwadasi

11-Apr-10 18:57

Hi Abhinav,
Thank you, I have done, but it shows the same.

Re: Silverlight 3 - While validation it breaks the application and shows the error

Abhinav S11-Apr-10 19:07

Abhinav S

11-Apr-10 19:07

Check your txtBoxStyle style to make sure whatever static resources you use in there are available.

Re: Silverlight 3 - While validation it breaks the application and shows the error

dwadasi11-Apr-10 21:51

dwadasi

11-Apr-10 21:51

Hi Abhinav,

Thank for your reply, I have removed(styles) every thing, but the same problem persists, Can you tell me any other idea please? is there any problem with RIA services setup?

Regards
Murthy

Regex validation in Silverlight RIA services

jonathan1511-Apr-10 9:35

jonathan15

11-Apr-10 9:35

I am just doing some testing with RIA services for a new app. Most of the fields have validation so i thought the validation attributes in RIA services would work well.

The app involves taking user input and creating an xml file that validates against an xsd. The xsd specifies regular expressions to validate some of the fields so i thought i could copy them and use them as regularexpression attributes in RIA services but its not working. For example according to the info i was given this regex:

([A-Z0-9\(\)\-/'&]+)|([A-Z0-9\(\)\-/'&][A-Z 0-9\(\)\-/'&]*[A-Z0-9\(\)\-/'&])

should allow upper case alpha and numbers plus some specific characters but when tested it alows either upper or lower case alpha.

any ideas on why its not working or what it actually breaks down to.

Jon

How to define another XAML page element as SourceName of EventTrigger

Prasoon Chaudhary9-Apr-10 7:04

Prasoon Chaudhary

9-Apr-10 7:04

I've a storyboard with key 'Effect'. I want to start/stop it at button clicks. Everything works fine if 'btnStart/btnStop' buttons remain on same xaml code, in which this EventTrigger is. But my StoryBoard and EventTriggers are part of a UserControl and 'btnStart/btnStop' buttons are on Main XAML. So, my question is, what should I write to let WPF know that I mean buttons from Main?

Also, what do I need to write, if I wish to trigger it when a function get called from Main?

<EventTrigger RoutedEvent="ButtonBase.Click" SourceName="btnStart">
			<BeginStoryboard x:Name="st_one" Storyboard="{StaticResource Effect}"/>
		</EventTrigger>

		<EventTrigger RoutedEvent="ButtonBase.Click" SourceName="btnStop">
			<StopStoryboard BeginStoryboardName="Glow_Move"/>
		</EventTrigger>

Re: How to define another XAML page element as SourceName of EventTrigger

Paul Selormey10-Apr-10 22:31

Paul Selormey

10-Apr-10 22:31

How about exposing the on/off as a dependency property in the user-control?

Best regards,
Paul.

Jesus Christ is LOVE! Please tell somebody.

Securing Silverlight and WCF Services with Windows Security

Michael J. Eber9-Apr-10 6:47

Michael J. Eber

9-Apr-10 6:47

I'm working to lock down our business application which is Silverlight and a WCF data service.
My first attempt really locked down the service...couldn't even get at the wsdl file from VS2008!
I also can't find exactly how to confirm that the windows identity is passed to Silverlight.

What I want: can't run the Silverlight app unless signed on. calls to the wcf service pass the credentials. WCF lets all transactions occur except updates which are locked down to 3 ntlm groups.

I'm not looking for code here. I'm looking for any article here or on the net that gives me a step by step process for doing the lockdown. Most of the stuff I've seen assumes I know what I'm doing ... which I'm not. Wink | ;)

Thanks,

Michael

Creating dynamicly loading pages in WPF

Ian Durward9-Apr-10 0:53

Ian Durward

9-Apr-10 0:53

Hello

Can someone point me into the right direct on how to do the following task in WPF?

I want to have a master Panel in a window that changes based on what a user selects from a menu. For example the panel initially shows a welcome screen. After the user select a new form button, the panel is cleared and populated by a form containing multiple controls. The user could then select another menu button and the panel is once again regenerated based on the menu selection.

I know how to do this all within the code behind but I see that as being a messy way of doing it and defeats’ the purpose of WPF. How do I do it so that the panel is being populated from xaml? Does this have something to-do with user controls? And creating a new user control for each panel that will be loaded by the menu?

If you know of any good books or tutorials that have examples like this then please let me know, otherwise any help would be greatly appreciated.

Re: Creating dynamicly loading pages in WPF

Paul Selormey10-Apr-10 22:14

Paul Selormey

10-Apr-10 22:14

The topic says dynamic loading of pages and I think that solves the problem you have outlined.

Is this simple pattern not solving that problem?

1. Have main window with Frame object
2. Load pages into the Frame, by setting Frame.Source

If not, the question is not probably clear enough.

Best regards,
Paul.

Jesus Christ is LOVE! Please tell somebody.

Route Flash Event to WPF Code

Tiger4568-Apr-10 23:07

Tiger456

8-Apr-10 23:07

Hi

We have a WPF application which runs on kiosk. On idle time (when no customer at kiosk) kiosk will a play flash. There is button at the right bottom of flash. When the user click on that button We need to map/route this button click event to a method in WPF page in which the flash is playing.

Way we have designed forms for playing flash:

First we placed a WebBrowser control inside a "UserControl" which inherits from System.Windows.Forms namespace. In runtime a flash file is assigned to this control and loaded into a "WindowsFormsHost" control placed inside an XAML page

Thanks in Advance

Re: Route Flash Event to WPF Code

Paul Selormey10-Apr-10 22:23

Paul Selormey

10-Apr-10 22:23

It might be easier if you use the System.Windows.Controls.WebBrowser control.

See the WebBrowserControlSample in the SDK WPF samples, it shows how to interact with the scripts.

Best regards,
Paul.

Jesus Christ is LOVE! Please tell somebody.

[C#] How to access Image created at runtime

aleroot8-Apr-10 5:06

aleroot

8-Apr-10 5:06

I have a WPF Window that at loading time generate a variable number of image with this for cycle :

public Window1()
{
InitializeComponent();

int numPos = 5;

for (int i = 1; i <= numPos; i++)
{
Image imageStatus = new Image();
imageStatus.Name = "Image" + i;
statusGrid.Children.Add(imageStatus);
}
}

Now i need to access at this image from a timer that every 10 seconds change the image.Source Property of every image crested at runtime ..

How Can i do this ?

Re: [C#] How to access Image created at runtime

aleroot8-Apr-10 9:40

aleroot

8-Apr-10 9:40

i've found a solution , i have an ImageGrid with only Image Created at runtime :

foreach (Image ctrl in imageGrid.Children)
{
if (ctrl.GetType() == typeof(Image))
{
if (((Image)ctrl).Name == "Image1")
((Image)ctrl).Source = new BitmapImage(new Uri("pack://application:,,,/MyApplication/aleroot.png"));
}
}

with this code i change the image source for my Image Created at runtime .

Thanks anyway.

WPF and dual screens [modified]

phannon⁸⁶7-Apr-10 23:04

phannon⁸⁶

7-Apr-10 23:04

I started looking into WPF recently for the sake of "research" purposes at work, things got a little slow so I thought I'd check it out to keep busy and the old grey matter churning.

Anyway, since I was playing around, I thought why not get the latest VS2010 RC, things were going OK then BAM, BSOD whilst fiddling with the designer. Thought little of it, and dropped down a step to VS2008 (we currently use VS2005/.NET 2.0), things were going OK for about half a day then all of a sudden the designer was failing to load at all, the markup view was fine as was the C#. When left for about half an hour the whole thing would grind to a halt of a sudden and display an out of memory error in the designer.

It all seemed odd, but it was the end of the day and I left it, came back in today, and out of interest my coworker suggests dragging VS over to the main screen (left) and like a flash, the designer came back to life. Dragged it back over to the right (where I normally like to have VS) and it hung instantly, back to the left and it lives! Unfortunately I did this one too many times and the whole thing BSOD, which then made the VS2010 BSOD make more sense as that's written in WPF.

Anyone run across this problem before? (XP SP3)

Cheers

[EDIT] Now it's happening on the left screen after fiddling with the designer for a couple of seconds, checked my drivers and they're up to date. [/EDIT]

He who makes a beast out of himself gets rid of the pain of being a man.

modified on Thursday, April 8, 2010 7:20 AM

Re: WPF and dual screens

phannon⁸⁶8-Apr-10 23:23

phannon⁸⁶

8-Apr-10 23:23

Ended up just upgrading to Weven at work earlier than planned, seems ok, but obviously not the most ideal solution for everybody Smile | :)

He who makes a beast out of himself gets rid of the pain of being a man.

navigate to a page\usercontrol through code

Bad Programmer7-Apr-10 20:39

Bad Programmer

7-Apr-10 20:39

Hi,
I have a trreview in place and on selecting a treeviewitem i need to open the appropriate page on the right hand side. Im binding the treeview and its events from database during app load.

My page names are also stored in database and on selecting treeviewitem it should open the page.

Problem:
Page names are in string format. how shuld i typecast it to add it as a children item of the left hand side container

Please provide me with any suggestions or help

Bad Programmer

Re: navigate to a page\usercontrol through code

Abhinav S9-Apr-10 7:03

Abhinav S

9-Apr-10 7:03

Bad Programmer wrote:
Page names are in string format. how shuld i typecast it to add it as a children item of the left hand side container

Paste some code here and maybe someone can help you.

Me, I'm dishonest. And a dishonest man you can always trust to be dishonest.
Honestly. It's the honest ones you want to watch out for...

Re: navigate to a page\usercontrol through code

Michael J. Eber16-Apr-10 21:17

Michael J. Eber

16-Apr-10 21:17

First thing to do is make sure that the location you want your pages to be show is a NavigationFrame.
(I think that is the right name for it -- on my home machine not my development machine)

Next thing to do is in the treeview a generic way to provide what to load you want to keep the location/name of the page in the Tag of the control.

Finally when you capture the event Navigate:

HtmlPage.Window.Navigate(new Uri(urlString), targetString);

How to jion points into a smoothing curve in WPF

arucied7-Apr-10 18:41

arucied

7-Apr-10 18:41

I use DrawingContext to do the visual job
I have tried BezierSegment,QuadraticBezierSegment,PolyBezierSegment
but they not worked
they need control points
so the count of the points are confined
and the joined curve was not smoothing

Is there any way in WPF could solve it?
a smoothing curve just like DrawCurve() in Graphic will be ok.

thanks for any answers.

Re: How to jion points into a smoothing curve in WPF

arucied10-Apr-10 20:07

arucied

10-Apr-10 20:07

I have solved it
thanks
if you are interest in this
we could have a conversition

how to start learning wpf

shoeb017177-Apr-10 4:08

shoeb01717

7-Apr-10 4:08

i'm new in c#.i have a little knowledge of c#.i want to learn wpf.can you tell me whats the proper way to learn wpf?is it possible to start c# with learning wpf first?should i start a project to learn this?if so can you give me some ideas?please tell me the way to start learning wpf.

shoeb

Re: how to start learning wpf

Not Active7-Apr-10 5:21

Not Active

7-Apr-10 5:21

Start here[^] or here[^]

I know the language. I've read a book. - _Madmatt

Re: how to start learning wpf

Estys7-Apr-10 5:26

Estys

7-Apr-10 5:26

Hi shoeb,

There is probably no proper way to learn anything. It just takes time and effort.
I would start here : Windows Presentation Foundation.
It's well possible to learn C# separately from WPF. The thing in common between them is the .NET framework. You could also choose VB.NET.
Download VS Express, create a WPF forms app and you're in business. From there bootstrap yourself with knowledge gained from books/internet.

Many happy hours toying with .NET,
Sytse

Re: how to start learning wpf

Pete O'Hanlon7-Apr-10 9:28

Pete O'Hanlon

7-Apr-10 9:28

Possibly the best way to do this is to buy the books WPF Unleashed[^] by Adam Nathan and Pro WPF in C# 2008: Windows Presentation Foundation with .NET 3.5, 2nd Edition[^] by Matthew MacDonald. Then, read the articles by Josh Smith, Karl Shifflett and Sacha Barber.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

My blog | My articles | MoXAML PowerToys | Onyx

Re: how to start learning wpf

Paul Selormey10-Apr-10 23:12

Paul Selormey

10-Apr-10 23:12

Correct for 5 points, those two books got me in Smile | :)

Best regards,
Paul.

Jesus Christ is LOVE! Please tell somebody.

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