WPF ListBox/ComboBox with multiple items of same value - WPF Discussion Boards

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Re: Silverlight and Asp.Net

Jason Wilczak20-Mar-09 11:44

Jason Wilczak

20-Mar-09 11:44

Thanks a bunch for that!! Looking forward to diving into it!

Am I missing someting ?

Christian Graus19-Mar-09 13:04

Christian Graus

19-Mar-09 13:04

Why is it htat in WPF, I make an object invisible and it still covers the UI so that stuff underneath cannot be clicked ? It makes XAML animations useless. I can fade something out, but I still need to catch the event where the animation ends so I can mark it as collapsed.

Christian Graus

Driven to the arms of OSX by Vista.

Re: Am I missing someting ?

Mark Salsbery19-Mar-09 14:27

Mark Salsbery

19-Mar-09 14:27

By design? Poke tongue | ;-P

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

Re: Am I missing someting ?

Christian Graus19-Mar-09 16:02

Christian Graus

19-Mar-09 16:02

Yeah, I bet. But, for what purpose ?

Christian Graus

Driven to the arms of OSX by Vista.

CPU Usage chart in Silverlight

farhan134219-Mar-09 9:24

farhan1342

19-Mar-09 9:24

Hi,

I am trying to develop a CPU utilization Chart in Silverlight but can't seem to include System.Diagnostics.Process in the project. Can someone please point me in the right direction and advice me on the best way to implement the CPU utilization function.

I am using a Gauge to show my CPU utilization

Thanks

Re: CPU Usage chart in Silverlight

Mark Salsbery20-Mar-09 6:30

Mark Salsbery

20-Mar-09 6:30

AFAIK you can't get the CPU usage info from a Silverlight application.

Mark

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

DataGridCheckboxColumn bind to EF Many-To-Many Relationship

Wouter Van Ranst19-Mar-09 8:21

Wouter Van Ranst

19-Mar-09 8:21

Hi All. I am working on a project with WPF (DataGrid) and ADO.NET EF.
The relevant piece of the EF model is shown below. Notice the *--* relationship between Location and ArticleClass.

EF Model[^]

The datagrid in the right hand upper corner (A) lists all the names of the ArticleClasses
The datagrid on the bottom (L) lists all the available Locations.

WPF Form[^]

What I want to do is, when I check the CanHaveAsArticle checkbox of a certain ArticleClass in (A), that a relationship is made (remember the *--*) between the selected Locations in (L) and the checked ArticleClasses in (A).
How can I do this using databinding?
I've tried a ValueConvertor but the instance doesn't know which rows of (L) are selected.
[...]
<my:DataGrid.Columns>
<my:DataGridTextColumn Header="Name" Binding="{Binding Path=Name}" IsReadOnly="True" />
<my:DataGridCheckBoxColumn Header="CanHaveAsArticle" Binding="{Binding Path=Locations, Converter={StaticResource myRelationshipManager}}" />
</my:DataGrid.Columns>
[...]
I've thought about binding it to a property in the Window.xaml.vb file where the setter creates the relationship (something like Location.ArticleClass.Add(L.SelectedRow)) and the getter checks whether there is a relationship, but I dont seem to find out how.
Thanks,
Wouter

WPF ListBox/ComboBox with multiple items of same value

BRShroyer19-Mar-09 3:44

BRShroyer

19-Mar-09 3:44

I have a WPF application with a ListBox containing the following values:

Item0
Item1
Item2
Item3
Item3
Item2

When an item is double-clicked I have a MessageBox showing "item " + ListBox1.SelectedIndex.ToString() + " was selected.". The SelectionMode for the listbox is set to Single.

Everything works fine for the first 4 items, double-clicking Item0 shows item 0 was selected. However, the last two show the first item that matches that value. Double-clicking the second Item3 says item 3 was selected when it should be item 4 and the second Item2 says item 2 was selected when it should say item 5. Also, the selection highlight will highlight both lines and leave one of the duplicates highlighted even when one of the items without a duplicate is selected.

What do I need to do to get the last two items to show that they are the ones being selected? Why is WPF looking at the value instead of the individual items? This works fine with a windows forms listbox.

Thanks for any help,

Brad

"You know you're a geek when... You try to shoo a fly away from the monitor with your cursor. That just happened to me. It was scary." — Juuso Heimonen.

Re: WPF ListBox/ComboBox with multiple items of same value

ABitSmart19-Mar-09 4:38

ABitSmart

19-Mar-09 4:38

It work's fine on my machine - proper index and no multiselection. This is what I am using,

<ListBox Name="mulList" MouseDoubleClick="ListBox_MouseDoubleClick" SelectionMode="Single">
    <ListBoxItem Content="Item 0"/> 
    <ListBoxItem Content="Item 1"/>
    <ListBoxItem Content="Item 2"/>
    <ListBoxItem Content="Item 3"/>
    <ListBoxItem Content="Item 3"/>
    <ListBoxItem Content="Item 2"/>
</ListBox>

private void ListBox_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            MessageBox.Show("item " + (sender as ListBox).SelectedIndex.ToString() + " was selected.");//works
            MessageBox.Show("item " + mulList.SelectedIndex.ToString() + " was selected.");//works
        }

Re: WPF ListBox/ComboBox with multiple items of same value

BRShroyer19-Mar-09 6:03

BRShroyer

19-Mar-09 6:03

Forgive me, but I'm still a little green with WPF. Your method worked fine for me when I added ListBoxItems at design time.

I was adding string items to the ListBox at runtime by:

ListBox1.Items.Clear();
for (int i = 0; i << listOfNames.count(); i++)
{
  ListBox1.Items.Add(listOfNames.name[i]);
}

If I create a ListBoxItem and set it's content to the name and then add it, that worked:

ListBox1.Items.Clear();
for (int i = 0; i << listOfNames.count(); i++)
{
  ListBoxItem listBoxItem = new ListBoxItem();
  listBoxItem.Content = listOfNames.name[i];
  ListBox1.Items.Add(listBoxItem);
}

I was using ListBox1.SelectedItem to return the value (in my case name) of what was selected. Now I have to create a ListBoxItem, set it to the SeletecdItem, and then grab the content. So much for thinking it was simple. Smile | :)

Thanks again for your help.

Brad

"You know you're a geek when... You try to shoo a fly away from the monitor with your cursor. That just happened to me. It was scary." — Juuso Heimonen.

Re: WPF ListBox/ComboBox with multiple items of same value

w3stfa1129-Nov-09 18:13

w3stfa11

29-Nov-09 18:13

I have the same problem. I think it's a bug in WPF.

I'm using .NET 4.0 Beta 2 on VS2010 and I'm on Windows 7RC. The application itself is targeting .NET 3.0.

UIcontrol.Dispatcher.CheckAccess()

Jammer19-Mar-09 1:56

Jammer

19-Mar-09 1:56

Hi All,

I keep seeing examples using this method but I simply cannot find it on the Dispatcher in my UI controls ... has this been deprecated in 3.5 SP1 or something??

Cheers,

Jammer
My Blog | Article(s)

Re: UIcontrol.Dispatcher.CheckAccess()

ABitSmart19-Mar-09 2:23

ABitSmart

19-Mar-09 2:23

It seems to be scared of you Smile | :)

Read here CheckAccess hidden from intellisense[^]

Re: UIcontrol.Dispatcher.CheckAccess()

Jammer19-Mar-09 2:39

Jammer

19-Mar-09 2:39

Ahh ...

Jammer
My Blog | Article(s)

Re: UIcontrol.Dispatcher.CheckAccess()

Pete O'Hanlon19-Mar-09 2:23

Pete O'Hanlon

19-Mar-09 2:23

This method has deliberately been hidden by Microsoft - they state that it's an advanced method that should only be used with care. We had lengthy discussions in the WPF Disciples about this issue.

"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

Re: UIcontrol.Dispatcher.CheckAccess()

Jammer19-Mar-09 2:43

Jammer

19-Mar-09 2:43

Gotcha. Thanks Pete ... do you have a link to that discussion?

Cheers,

Jammer
My Blog | Article(s)

Re: UIcontrol.Dispatcher.CheckAccess()

Pete O'Hanlon19-Mar-09 3:33

Pete O'Hanlon

19-Mar-09 3:33

You can find more info here[^].

"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

Adding Window in TabItem

jear7719-Mar-09 1:44

jear77

19-Mar-09 1:44

Hi!

I want to display or to show, in a WPF Application, a window in TabItem,
can somebody tell me how to do this.
Because it doesn`t work in the same way like in the winforms application.

thanks

Jeton!

Re: Adding Window in TabItem

ABitSmart19-Mar-09 2:31

ABitSmart

19-Mar-09 2:31

jear77 wrote:
a window in TabItem

I seriously doubt you can do that. See here[^]

jear77 wrote:
Because it doesn`t work in the same way like in the winforms application

What ?

Could you elaborate what you are trying to achieve ?

Reset Storyboard on complete.

emptythetill19-Mar-09 0:38

emptythetill

19-Mar-09 0:38

Hello.

Beyond have a second 'blank' storyboard which is called when a storyboard completes, is there a way to reset the current board back to the start when it's done?

I have been tasked with creating a crazy complex UI design which uses a massive amount of animations created in Blend (if we had a TweenMax for WPF it's be two lines of code!), most of these animations need to reset to the start after they are through, and I'm loathed to create dozens of extra animations or put in alpha and then re-shift-back-to-the-start key frames on everything.

Regards, E.

Re: Reset Storyboard on complete.

sivaddrahcir23-Mar-09 13:39

sivaddrahcir

23-Mar-09 13:39

I think that this MSDN how-to will help:

http://msdn.microsoft.com/en-us/library/aa970493.aspx[^]

It lists 3 options:
Set the animation's FillBehavior property to Stop

Remove the entire Storyboard.

Remove the animation from the individual property.

Blog:
http://windowsclientdevelopment.spaces.live.com
FAQs:
http://windowspresentationfoundation.wikispaces.com
http://windowsmobile.wikispaces.com
http://vsto.wikispaces.com

Exporting Grid to PDF

sumit703418-Mar-09 20:50

sumit7034

18-Mar-09 20:50

Hi
Is there any way in silverlight to export the grid as PDF?
Is there any dll that will help?

Thanks in Advance

Re: Exporting Grid to PDF

Mark Salsbery19-Mar-09 7:04

Mark Salsbery

19-Mar-09 7:04

Currently, you pretty much need to do that on a server.

AFAIK there's no support for rendering UI elements to a bitmap in Silverlight 2.

Mark

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

Re: Exporting Grid to PDF

Braulio Dez1-Apr-09 5:59

Braulio Dez

1-Apr-09 5:59

Mark is 100 % correct, just grab your data send it to the server using a WCF service, in for instance XML format (just an string), and use any of the well know tools, isharptext I think it's free, then you have tall pdf, ...

HTH
Braulio

/// -------------------------
     Braulio Díez

     DBSchemaEditor.com
     Free Silverlight based DB Schema Modeling Tool
/// -------------------------

Treeview

Ch.Gayatri Subudhi18-Mar-09 18:32

Ch.Gayatri Subudhi

18-Mar-09 18:32

The requirement is to in a tree view there two child nodes dragging the elements of 2 to second child node dynamically.

Ch.Gayatri Subudhi

Last Visit: 31-Dec-99 18:00 Last Update: 24-Jun-24 7:56

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