Re: Assign names to ModelVisual3D's in code-behind - WPF Discussion Boards

17-Jun-09 23:54

I generate all my 3D models in the code-behind file. What I want to know is, is it possible to assign names to the ModelVisual3D's as I create them?
In the XAML I could just use x:Name, but as I said, the models are created in the code-behind.

#realJSOP18-Jun-09 2:26

#realJSOP

18-Jun-09 2:26

Have you tried setting the Name property?

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Etienne_12318-Jun-09 4:34

18-Jun-09 4:34

There is no such thing as a Name property for either a ModelVisual3D or a Model3DGroup when using it in the code-behind. It's the first thing I tried

Ray Cassick18-Jun-09 12:43

Ray Cassick

18-Jun-09 12:43

There isn't an x:Name property?

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Pete O'Hanlon19-Jun-09 1:00

Pete O'Hanlon

19-Jun-09 1:00

x:Name is a dependency property - hence, you can set it in code using SetValue(this3DObject, "ObjectName"); (and use GetValue("ObjectName") as ModelVisual3D; to retrieve it).

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

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Etienne_12319-Jun-09 1:32

19-Jun-09 1:32

I tried your code, but I'm not quite sure how to implement it. I'm very new to WPF. Let me give you a sample of the code I'm using. I use an array of ModelVisual3D's called mv3dCube, each array index holding a cube.
So each time I add a new cube I set the Content property of the ModelVisual3D to an item in a Model3DGroup array as follows:

mv3DCube[index].Content = mdl3DGrpCube[index];

But before I set the Content property, I want to assign name to the ModelVisual3D.
Can you please show me exactly how I would implement this using my code.
I tried something like the following:

mv3DCube[index].SetValue(this.mv3DCube[index], "someName") but it still gives me an error

Etienne_12321-Jun-09 10:45

21-Jun-09 10:45

I got it working.
I used ModelVisual3D.SetValue(FrameworkElement.NameProperty, "someName") and ModelVisual3D.GetValue(FrameworkElement.NameProperty)

Thanks guys

limbique10-Jun-10 8:50

limbique

10-Jun-10 8:50

I can't get it working. I'd like to set/get a name from a dynamically loaded xaml file.
When I save the Viewport3D with this method, the name of the Viewport (specified in xaml) is written, but the name of my model isn't. Anyone has a solution?

using (FileStream stream = new FileStream("text.xaml", FileMode.Create, FileAccess.Write))
{
  XmlWriterSettings settings = new XmlWriterSettings();
                settings.Indent = true;
                settings.ConformanceLevel = ConformanceLevel.Auto;
                XmlWriter writer = XmlWriter.Create(stream, settings);
                XamlDesignerSerializationManager manager = new XamlDesignerSerializationManager(writer);
                manager.XamlWriterMode = XamlWriterMode.Expression;
                XamlWriter.Save(Viewport, manager);
            }

-----------------

ModelVisual3D model = new ModelVisual3D();
model.Content = new GeometryModel3D(MeshPrimitives.Box(10, 10, 10), new DiffuseMaterial(new SolidColorBrush(Colors.Red)));
model.Transform = new TranslateTransform3D(new Vector3D(0, 20, 0));
model.SetValue(FrameworkElement.NameProperty, "SomeBox");

Viewport.Children.Add(model);

Etienne_12310-Jun-10 9:46

10-Jun-10 9:46

Your method won't work because you're setting the model's name programmatically in your code and not in the xaml. I think it will only write to xml whatever is explicitly defined in the xaml.

Can't you rather create this model as a resource in the xaml and then just reference that resource wherever you want to use it? That way you can give the resource a name and then this name should appear in the xml file.

Commands on a button inside a datatemplate in MVVM?

Insincere Dave18-Jun-09 16:16

Insincere Dave

18-Jun-09 16:16

You could try NameScope.RegisterName, looking at the docs there is also FrameworkElement.RegisterName but I'm not sure if either works with Visual3Ds.

Foxandxss17-Jun-09 12:20

Foxandxss

17-Jun-09 12:20

Hello!

Imagine you have a view with his ViewModel. You have your commands created on that ViewModel and you can use it in the view using something like "{Binding MyCommand}". That is because the View's DataContext is the ViewModel.

But... Imagine now that you have a ItemsControl with a ObservableCollection of some class (like dog). You defined an ItemTemplate and inside, a DataTemplate. Well, every row is a dog item of that list. Now, you want a button in every row that delete that row. You have a command in the ViewModel that delete that dog but... How can you link the button with the command? The button datacontext is the Dog itself and not the ViewModel. You can't link to the command... Then, what is the correct solution to this kind of problem?

Thank you.

Re: Commands on a button inside a datatemplate in MVVM?

User 27100918-Jun-09 18:47

User 271009

18-Jun-09 18:47

You can place a ViewModel inside the ObservableCollection that exposes Dog.

I have an example of this here:

Exploring a Model-View-ViewModel Application; WPF Password Manager, Cipher Text[^]

Look for the section: List of Commands Scenario

Cheers, Karl

» CodeProject 2008 MVP, CodeProject 2009 MVP

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modified 27-Feb-21 21:01pm.

MediaElement not playing video on XP 64-bit.

pioner17-Jun-09 9:07

pioner

17-Jun-09 9:07

So i`ve found that it`s a bug in Windows XP.
Some people say that it`s needed to install 32-bit framework on 64-bit OS.Nonsense.Seems impossible.
So any other ways to make it play video?

Re: MediaElement not playing video on XP 64-bit.

Christian Graus17-Jun-09 11:11

Christian Graus

17-Jun-09 11:11

Media Element will not work if WMP10 is not installed, have you checked that ?

Christian Graus

Driven to the arms of OSX by Vista.

"! i don't exactly like or do programming and it only gives me a headache." - spotted in VB forums.

I can do things with my brain that I can't even google. I can flex the front part of my brain instantly anytime I want. It can be exhausting and it even causes me vision problems for some reason. - CaptainSeeSharp

Re: MediaElement not playing video on ...

neglewis20-Aug-09 4:32

neglewis

20-Aug-09 4:32

C# WPF

I have this lines of code.

mediaElement.Source = new Uri(fileName, UriKind.Absolute);
mediaElement.Play();

Sometimes mediaElement plays the file (mp3 or video)... and sometimes will play that file after a while (3 minutes ++ like the file that just was played previously)

I tried that to put mediaElement.Stop(); or to stop the graph (like in directShow) but no results...

Please... please someone know why this lag?

Vb.net 2008 ( visual studio 2008)

Rits11038917-Jun-09 1:04

Rits110389

17-Jun-09 1:04

How to create the WPF Web browser application, in which user can navigate through multiple pages? Smile | :)

Christian Graus17-Jun-09 11:06

Christian Graus

17-Jun-09 11:06

As you're using WPF, you will need XAML, as well as some code.

Seriously, what have you tried ?

Rits11038918-Jun-09 21:45

Rits110389

18-Jun-09 21:45

Tell me how can i do that? Laugh | :laugh:

Christian Graus18-Jun-09 23:55

Christian Graus

18-Jun-09 23:55

I assume you're joking ? What was the point of your original post ?

Mark Salsbery19-Jun-09 7:28

Mark Salsbery

19-Jun-09 7:28

Start here:

Windows Presentation Foundation XAML Browser Applications Overview[^]

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