Re: Button click event within a ControlTemplate? - WPF Discussion Boards

controls visible in designer but not available in window at runtime [modified]

12-Feb-10 8:10

Sorry. I dont think I can understand you question completely.

For popups, see here[^]. Searching on the internet should give you plenty more popup options.

If you want to pass something between Javascript and Silverlight - use the html bridge as described here[^].

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...

Member 290565112-Feb-10 2:30

Member 2905651

12-Feb-10 2:30

Hi,
I wanted to create wpf controls dynamically based on a business model.
for that i tried to use DataTemplates for creation of controls based on values from an array. And then bind the array to ItemControls Itemsource.
I used this example for testing.. This is what i did..

< Window x:Class="Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="dialog" xmlns:sys="clr-namespace:System;assembly=mscorlib"
Width="393.412" Height="333.4">

< Window.Resources>
< ResourceDictionary 
  Source="ResourceDictionary\ControlCreatorDataTemplate.xaml"/>
</ Window.Resources>

< StackPanel>
< ItemsControl ItemsSource="{Binding Source={StaticResource data}}" Visibility="Visible" />
</ StackPanel>
</ Window>

resource dictionary

< ResourceDictionary  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 xmlns:sys="clr-namespace:System;assembly=mscorlib">
< x:ArrayExtension Type="{x:Type sys:Object}" x:Key="data">
< sys:String>String</ sys:String>
< sys:Boolean>True</ sys:Boolean>
< sys:Boolean>False</ sys:Boolean>
< sys:Double>10.0</ sys:Double>
</ x:ArrayExtension >

< DataTemplate DataType="{x:Type sys:Boolean}" >
< CheckBox Content="CheckBox" IsChecked="{Binding Mode=OneWay}" />
</ DataTemplate >
< DataTemplate DataType="{x:Type sys:String}" >
< TextBox Text="{Binding Mode=OneWay}" />
</DataTemplate >
< DataTemplate DataType="{x:Type sys:Double}" >
< TextBox Text="{Binding Mode=OneWay}" />
</ DataTemplate >
</ ResourceDictionary >

Problem is i am able to view the checkbox and text in the designer window in VS08
When i run the window -> the controls are not visible...

Any help is appreciated

-Jasper

J.p.Jasper

Button click event within a ControlTemplate?

Richard Dutton12-Feb-10 1:02

Richard Dutton

12-Feb-10 1:02

Hi,

I have a class which derives from TextBox called EntryTextBox and provides a PreviewKeyDown event handler (although for the purposes of this question, it's not relevant).

I have produced a ControlTemplate within a style as follows:

<Style TargetType="{x:Type my:EntryTextBox}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type my:EntryTextBox}">
<DockPanel>
<Border BorderThickness="1" HorizontalAlignment="Stretch" BorderBrush="DarkGray" Background="White" Width="100">
<DockPanel>
<Button DockPanel.Dock="Right" Visibility="{Binding Path=KeyboardPopup,Converter={StaticResource VisibilityConverter},RelativeSource={RelativeSource TemplatedParent}}">
<ContentControl Width="15" Height="10" Template="{StaticResource KeyboardIconContent}"/>
</Button>
<ScrollViewer Margin="0" Background="Transparent" HorizontalAlignment="Stretch" x:Name="PART_ContentHost"/>
</DockPanel>
</Border>
</DockPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

Which as you can see displays a Button as part of the TextEntry box depending on the value of KeyboardPopup. This works fine, but I want to be able to act on the button's click handler from within my EntryTextBox class but don't know how to do it.

I've read in "Pro WPF in C# 2008, Matthew MacDonald, P872" that you need to "give your elements recognisable names and attach event handlers to them programatically in the control constructor" but I am unsure of the syntax I should use in the class constructor of EntryTextBox.

Can anyone help me?

Cheers

Richard

Re: Button click event within a ControlTemplate?

rhuiden12-Feb-10 4:59

rhuiden

12-Feb-10 4:59

1. Name the button something line "PART_Button".
2. Then override OnApplyTemplate().
3. In OnApplyTemplate use GetTemplateChild("PART_Button").
That will get you a reference to the button to add your event handler. Of course you will want to check the returned object to make sure is is not null. Someone may change the template for your control. Wink | ;)

Re: Button click event within a ControlTemplate?

Richard Dutton12-Feb-10 5:05

Richard Dutton

12-Feb-10 5:05

Thank-you rhuiden, you are a star! That's exactly what I was after.

Richard

11-Feb-10 7:39

Re: Initial impression: Silverlight much harder than WPF

11-Feb-10 7:39

Message Removed

Not Active11-Feb-10 8:24

11-Feb-10 8:24

Rants belong in the lounge or the soapbox, not here.

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

11-Feb-10 8:43

Re: Initial impression: Silverlight much harder than WPF

11-Feb-10 8:43

Message Removed

Not Active11-Feb-10 9:18

11-Feb-10 9:18

fjparisIII wrote:
I was hoping to elicit thoughtful responses.

Then ask a question, don't rant. The forums are for questions.

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

11-Feb-10 9:46

Re: Initial impression: Silverlight much harder than WPF

11-Feb-10 9:46

Message Removed

Not Active11-Feb-10 10:53

11-Feb-10 10:53

I think one type is programming is no more, or less, difficult than another. It's all about understanding the tools, techniques, environment, etc.

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

11-Feb-10 11:21

Re: Initial impression: Silverlight much harder than WPF

11-Feb-10 11:21

Message Removed

Not Active11-Feb-10 11:42

Silverlight application does not run

11-Feb-10 11:42

I think, as originally stated, you should move this to the lounge. It would be a better place to have such a discussion since, once again, the forums are for questions and don't seem to have any, only opinions and a need to discuss your difficulty in keeping up with the body of knowledge in this career field.

fjparisIII wrote:
I've been a professional programmer undoubtedly for more years than you've been alive

I wouldn't be so arrogant and make such assumptions.

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

jonatan_55611-Feb-10 1:58

jonatan_556

11-Feb-10 1:58

Hi.
I'm building a SL aplication and at the begining it worked fine. Bute now i change all the basic control properties(like Color, MArgins,Size, etc..) from the MyPage.xaml to App.xaml where i defined the Styles declaration. With this change my application does not run anymore. When i try to run the application, it stopes and the Visual Web Developer 2008 ExpressEdition goes down and dissapear.
Any ideas to solve that?
(Excuse my english but i don't speak better than this Smile | :)

)
Thanks
Regards Jonatan_556

Re: Silverlight application does not run

Abhinav S11-Feb-10 6:07

Re: Silverlight application does not run

11-Feb-10 6:07

Your xaml has some sort of a problem.

If you can paste some of your xaml code here, someone may be able to help you out.

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...

jonatan_55612-Feb-10 3:18

jonatan_556

12-Feb-10 3:18

Hi Before i send you my xaml code i decided to saw it again carefully and slowly and i found the problem and fixed it.
Thanks any way
Regards Jonatan

Re: Silverlight application does not run

Abhinav S12-Feb-10 8:04

Partial-trust on-screen keyboard?

12-Feb-10 8:04

jonatan_556 wrote:
i found the problem and fixed it

Ok. That's great.
Smile | :)

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...

Richard Dutton11-Feb-10 0:01

Richard Dutton

11-Feb-10 0:01

Hi,

I would like to implement a pop-up on screen keyboard which can be used to interact with a textbox through a touchscreen. I've found a load of WPF examples online but they all cause Security Exceptions when used in Partial Trust (as they use keyboard events).

Can anyone point me at a resource which will provide this functionality in a partial-trust XBAP?

Regards

Richard

Animation problem

fjparisIII10-Feb-10 20:08

10-Feb-10 20:08

I use animations all the time in WPF, but they seem to work completely different in Silverlight, principally because the elements being animated don't have a BeginAnimation method. So, given the element being animated, how can I find the Storyboard defining the animation?

Re: Animation problem

Abhinav S10-Feb-10 22:18

10-Feb-10 22:18

fjparisIII wrote:
Storyboard defining the animation

Not quite sure I understand your question.
What you need to do is create a Storyboard - see here[^].

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: Animation problem

fjparisIII11-Feb-10 5:11