Re: Hyperlinks in WPF seem enabled but do not open using XAML... what am I missing? - WPF Discussion Boards

Issue with accessing WPF user control dynamically

prabodh_254-Dec-08 23:43

4-Dec-08 23:43

Hi all,

I am developing XBAP application and facing following problem.

I have created one WPF user control and trying to access it dynamycally using reflection. Project contains Page1.xaml, Page2.xaml and userControl1.xaml. Actually when project starts page1 is hosted inside browser. when button is clicked new instance of Page2 is created and hosted inside frame and instance of userControl1 is also created and placed on the page2. AS you go on clicking button same thing happened and those many pages are hosted inside the frame. but the Problem is when I navigate between these pages user control loses its state. if I place the usercontrol at design time then it does not lose the state during navigation. here is my code in button click

Dim Pg As New Page2

fraHost.Content = Pg

and code in the Page2.loaded event is as follows

Dim asm As Assembly = Assembly.LoadFrom(AppDomain.CurrentDomain.BaseDirectory & "WpfBrowApp.exe")

Dim flags As BindingFlags = BindingFlags.NonPublic Or BindingFlags.Public Or BindingFlags.Static Or _

BindingFlags.Instance Or BindingFlags.DeclaredOnly

Dim ref_types As Type() = asm.GetTypes()

'StrSearchControl is the name of usercontrol

Dim typ As Type = asm.GetType(asm.GetName.Name & "." & StrSearchControl, True, True)

Dim instance As Object

For Each ty As Type In ref_types

If ty.Name = StrSearchControl Then

instance = Activator.CreateInstance(ty)

instance.height = Double.NaN

instance.width = Double.NaN

instance.ishittestvisible = True

Me.tbpgSreen.Content = instance

End If

Next

please help me on this.

thanks in advance.

Prabi

URGENT --- WPF Web Browser control ...how to detect the langauge on the web page like english, french etc

tarun jindal4-Dec-08 18:53

tarun jindal

4-Dec-08 18:53

Hi,

I am using a web browser control in my WPF application. I will be navigating various websites with its help. What i want is that when a certain web page gets loaded, based on the content inside that web page i should be able to identify the language which is written on that page like french , japanese etc.

Basically i want to apply the concept of Internationalization or something like that in WPF.

In internationalization we can get the web browser's language preferences by:
// Set the CurrentCulture property to the culture associated with the Web
// browser's current language setting.
Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture(Request.UserLanguages[0]);

I want the same thing for the web page that i navigate through my web browser control in WPF.

It's kind of urgent please help to find the solution soon.

Thanks in advance.

Drawing Performance

yanairon4-Dec-08 13:19

yanairon

4-Dec-08 13:19

Hi,

I was wondering what is better for performance in WPF.
Drawing in code or using image files.

and if so, what is the best format

Thanks

Re: Drawing Performance

Mohammad Dayyan5-Dec-08 1:38

Mohammad Dayyan

5-Dec-08 1:38

Well, I think so using images is faster, but with XAML you can draw vector shapes as well as shapes in Flash.
It depends your want.

Re: Drawing Performance

yanairon5-Dec-08 7:53

yanairon

5-Dec-08 7:53

Thanks,

I just want to know, when designing a new application, which approach is best

Re: Drawing Performance

Mohammad Dayyan5-Dec-08 9:16

Mohammad Dayyan

5-Dec-08 9:16

If I wanna design an application , I'll use XAML code.

Hyperlinks in WPF seem enabled but do not open using XAML... what am I missing?

Member 1854264-Dec-08 13:02

Member 185426

4-Dec-08 13:02

I'm fairly good with C# and WPF, but I'm relatively new when it comes to working with the new .NET 3.5 WPF RichTextBox control and it's XAML. Anyway, I needed to add a hyperlink insdie a RichTextBox control, so I found instructions on how to do this at http://blogs.msdn.com/llobo/archive/2007/08/09/3-5-features-enabled-hyperlinks-in-richtextbox.aspx[^]">, and I followed the instructions and was able to embed my own hyperlinks inside my own RichTextBox control, and they were lit up blue and underlined, and when I held down the CTRL button and hovered over them, the web browser hand pointer icon appeared, so they seemed to be enabled. However, when I hold down CRTL and click, nothing opens. I've tried this with my own links, and even with the exact same code with the exact same hyperlink on the site above. Am I missing something. What am I doing wrong?

Any help would be appreciated. If you want to reproduce this, just use the code on his site, and you'll see when you hold down Ctrl and Click, nothing actually opens.

Thanks everyone!

Justin

Re: Hyperlinks in WPF seem enabled but do not open using XAML... what am I missing?

Mohammad Dayyan5-Dec-08 1:33

Mohammad Dayyan

5-Dec-08 1:33

I've used this way :

XAML:

<Hyperlink Click="Hyperlink_Click" NavigateUri="http://www.mds-soft.persianblog.ir/"><Run 
  Text="Mohammad Dayyan"/></Hyperlink>

C# :

private void Hyperlink_Click(object sender, RoutedEventArgs e)
{
    try
    {
        Hyperlink source = sender as Hyperlink;
        System.Diagnostics.Process.Start(source.NavigateUri.ToString());
    }
    catch (Exception ex)
    {
    	MessageBox.Show(ex.Message, "Exception", MessageBoxButton.OK);
    }
}

Drawing with custom Pen

pym4-Dec-08 2:54

pym

4-Dec-08 2:54

Hello,

I have encountered a problem trying to draw a line with a custom pen.
What I need to do is draw a line from point X to point Y, but use a certain shape (some polygon), as opposed to the standard pen I get in DrawLine(Pen, Point, Point) interface.
There is the PenLineCap, but it is not good enough as it supports specific shapes.

Anyone has any idea how to achieve this?
Thanks.!

Re: Drawing with custom Pen

Mohammad Dayyan5-Dec-08 1:28

Mohammad Dayyan

5-Dec-08 1:28

See this article[^]. maybe help you.

Report definition file can't be opened

Arijit Manna4-Dec-08 1:29

Arijit Manna

4-Dec-08 1:29

Iam trying to run a WPF Report Viewer(coding in vb).

But its giving the following error
"Report definition file can't be opened, error:\rObject reference not set to an instance of an object."

I have specified the OpenFileDialog.FileName also

But to no avail.... Confused | :confused:

PLEASE HELLLP.....

Best Wishes ....... ARIJIT

Re: Report definition file can't be opened

Pete O'Hanlon4-Dec-08 2:04

Pete O'Hanlon

4-Dec-08 2:04

You will need to set a breakpoint, and step over the code that's loading the report definition to find out which variable is null. Without seeing the code, there's no way that we can know.

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

My blog | My articles | MoXAML PowerToys

Re: Report definition file can't be opened

Arijit Manna5-Dec-08 19:40

Arijit Manna

5-Dec-08 19:40

I am giving the relevant code :

Private Sub button1_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles button1.Click
Dim ofd As OpenFileDialog = New OpenFileDialog()
ofd.Title = "Select report definition file"
ofd.Filter = "Report definition files (*.xml)|*.xml|All files (*.*)|*.*"
If (ofd.ShowDialog() = System.Windows.Forms.DialogResult.OK) Then
Try
' parse file and select report definitions
Dim reports As String() = C1.C1Report.C1Report.GetReportList(ofd.FileName)
If (reports Is Nothing) Or (reports.Length <= 0) Then
Throw New Exception(String.Format("File {0} has no reports definitions.", ofd.FileName))
End If
tbFileName.Text = ofd.FileName
c1DocumentViewer.FileName = ofd.FileName

cbReportName.Items.Clear()
Dim reportName As String
For Each reportName In reports
cbReportName.Items.Add(reportName)
Next
cbReportName.SelectedIndex = 0

Catch ex As Exception
System.Windows.MessageBox.Show(String.Format("Report definition file can't be opened, error:\r{0}", ex.Message), "Error", MessageBoxButton.OK, MessageBoxImage.Error)
c1DocumentViewer.ReportName = ""
c1DocumentViewer.FileName = ""
End Try
End If
End Sub

Please help ! Cry | :((

Best Wishes ....... ARIJIT

Designing WPF application in VS-2008

NeCroFire4-Dec-08 0:03

NeCroFire

4-Dec-08 0:03

Hi.

I have recently started learning WPF. I've written a small app with a tab control on it. I have basically finished it and works fine. But here is the thing... why can't I select the tabs like I can in a normal windows app in the design mode so I can edit controls on that specific tab? I've tried Googling for an answer, but found nothing... which got me thinking that it's not a "general problem" and that I must be doing something wrong??? Confused | :confused:

Re: Designing WPF application in VS-2008

Mark Salsbery4-Dec-08 6:17

Mark Salsbery

4-Dec-08 6:17

Clicking on a TabItem's tab in the design pane should move you to that TabItem's contents.
Also, placing the caret in a TabItem's XAML should move you to that TabItem's contents.

Maybe try it with this:

<TabControl>
    <TabItem Header="Tab 1">
        <TextBlock Text="Text 1"/>
    </TabItem>
    <TabItem Header="Tab 2">
        <TextBlock Text="Text 2"/>
    </TabItem>
    <TabItem Header="Tab 3">
        <TextBlock Text="Text 3"/>
    </TabItem>
</TabControl>

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

Linq To SQL & WPF Cascading Comboboxes

Member 44002433-Dec-08 7:36

Member 4400243

3-Dec-08 7:36

Hello everyone!

I'll try to explain my trouble.

First, I have a LINQ To SQL class with two tables: Talleres and Areas. First table (Talleres) has a field called Area which contains an id of the Areas table, so there's the realtion Talleres.Area --> Area.Id defined at the database and, by extension, at the LINQ to SQL class.

Now, I want to make a form in WPF that presents two comboboxes. In combobox one (TalleresComboBox) there should show the list of Talleres (showing their property Name) and in combobox two (AreasComboBox) there should show the list of Areas (also showing their own property Name). There's also a SubmitButton to submit changes.

The behaviour of this form is very simple buy I can't be able to implement:

Point number 1. If we change the current element of TalleresComboBox, the element of AreasComboBox must autochange to the corresponding value.
Point number 2. We must be able to change the Area field of the Talleres element by changing the current item from AreasComboBox and updating database by pressing SubmitButton.

My code right now is the following:

C# Part

private void Window_Loaded(object sender, RoutedEventArgs e)
{
var Talleres = from row in dc.Talleres_talleres
select row;
TalleresComboBox.DataContext = Talleres;

var Areas = return from row in dc.Talleres_areas
select row;
AreasComboBox2.DataContext = Areas;
}

XAML Part

<Grid Height="354" Width="573">
<ComboBox ItemsSource="{Binding}"
DisplayMemberPath="name"
IsSynchronizedWithCurrentItem="True"
Margin="157,20,0,0" x:Name="TalleresComboBox" HorizontalAlignment="Left" VerticalAlignment="Top" Width="386" Height="23"/>

<ComboBox ItemsSource="{Binding}"
DisplayMemberPath="name"
SelectedValuePath="id"
SelectedValue="{Binding ElementName=TalleresComboBox, Path=SelectedItem.area, Mode=OneWay}"
Height="23" Margin="157,60,0,0" Name="comboBox2" VerticalAlignment="Top" HorizontalAlignment="Left" Width="386" />

<Button Height="23" HorizontalAlignment="Left" Margin="468,309,0,0" Name="button1" VerticalAlignment="Top" Width="75"
Click="button1_Click">Actualizar</Button>
</Grid>

I succedded in point number 1 but not point number 2. I've tried diferent things but no one has been ok.

Please help. Thanks very much.

Looking for this type of component in silverlight....

Goalie352-Dec-08 4:47

Goalie35

2-Dec-08 4:47

Does anyone know of a component available similar to this one that ComponentArt's releasing next year: Click here[^]

It doesn't have to be silverlight exactly. An ajax component like this may work ok also (although I'd assume silverlight would be better for this).

Any ideas?

Thanks.

Regards,

-Goalie35

Re: Looking for this type of component in silverlight....

Ge3ks22-Dec-08 3:50

Ge3ks

22-Dec-08 3:50

Try Zenexis:
http://www.zenexis.com/products/control/tabid/67/p-10-carousel.aspx

Playing a *.MP3 file in WPF ?

Mohammad Dayyan2-Dec-08 2:11

Mohammad Dayyan

2-Dec-08 2:11

Hi.

Can we play a *.MP3 file in WPF (C#) ?
Any ideas ?

Thank you.

Re: Playing a *.MP3 file in WPF ?

Mark Salsbery2-Dec-08 6:28

Mark Salsbery

2-Dec-08 6:28

Mohammad Dayyan wrote:
Can we play a *.MP3 file in WPF (C#) ?

Yes.

Mark

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

Re: Playing a *.MP3 file in WPF ?

Paul Conrad2-Dec-08 6:59

Paul Conrad

2-Dec-08 6:59

Mohammad Dayyan wrote:

Can we play a *.MP3 file in WPF (C#) ?

Yes.

Mohammad Dayyan wrote:
Any ideas ?

Maybe do a google search on it, or search the article search here.

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

"Not only do you continue to babble nonsense, you can't even correctly remember the nonsense you babbled just minutes ago." - Rob Graham

Re: Playing a *.MP3 file in WPF ?

Pete O'Hanlon2-Dec-08 9:01

Pete O'Hanlon

2-Dec-08 9:01

Use a MediaElement.

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

My blog | My articles | MoXAML PowerToys

Re: Playing a *.MP3 file in WPF ?

Jammer2-Dec-08 22:55

Jammer

2-Dec-08 22:55

You could also use the MediaPlayer class to access Window Media Player directly through C#.

MediaPlayer _mp3Player = new MediaPlayer();
_mp3Player.Stop();
Uri mp3 = new Uri(mp3fileLocation);
_mp3Player.Open(mp3);
_mp3Player.Play();

Jammer
My Blog | Article(s)

Re: Playing a *.MP3 file in WPF ?

Mohammad Dayyan3-Dec-08 8:18

Mohammad Dayyan

3-Dec-08 8:18

I also use SoundPlayer class ( I tested it for *.wav files )

Sending dll

Dushan1232-Dec-08 1:57

Dushan123

2-Dec-08 1:57

I need to send a dll file using WCF Service. Please Help me for do this

Dushan Perera

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.