Silverlight XAML controls [modified] - WPF Discussion Boards

Re: Web browser application having database

Christian Graus18-Jun-09 23:54

18-Jun-09 23:54

A SQL database isn't implimented any differently in WPF, compared to a winforms app. I need to know tho, why does your 'web browser application' need a database ?

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: Web browser application having database

#realJSOP19-Jun-09 0:11

#realJSOP

19-Jun-09 0:11

Christian Graus wrote:
I need to know tho, why does your 'web browser application' need a database ?

So he can properly catalog his inabilities.

"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

Re: Web browser application having database

Rits11038919-Jun-09 0:27

Rits110389

19-Jun-09 0:27

i need database because i want to store data from user and show the data to the user on demand Poke tongue | ;-P

Re: Web browser application having database

Christian Graus19-Jun-09 11:00

Christian Graus

19-Jun-09 11:00

What data ? Why ?

Re: Web browser application having database

Rits11038919-Jun-09 0:24

Rits110389

19-Jun-09 0:24

I have problem that the database created in WPF web browser application cant open.It provides an error.
The following code is written in the page2.xaml.vb under the event button1_click of button1

imports system.data
imports syste.data.sqlclient

dim sqlconnection1 as new sqlconnection(my.settings.database1connectionstring)
dim dr as sqldatareader
dim sqlcommand1 as sqlcommand

try
sqlconnection1.open()
sqlcommand1=new sqlcommand("select FirstName from Table1",sqlconnection1)
dr=sqlcommand1.executereader()
while dr.read()
combobox1.items.add(dr(0))
end while
dr.close()
catch ex as exception
msgbox ex.message
end try
sqlconnection1.close()

THE ABOVE CODE GENRATE THE FOLLOWING ERROR AT RUNTIME
REQUEST FOR THE PERMISSION OF TYPE 'system.sqlclient.sqlclientpermission,system.data,version=2.0.0.0,culture=neutral,publickeytoken=b77a5c561394e089 failed.

please tell me what should i do.

thanks in advance...... Big Grin | :-D

Re: Web browser application having database

Christian Graus19-Jun-09 10:59

Christian Graus

19-Jun-09 10:59

Try here[^]

Re: Web browser application having database

Rits11038920-Jun-09 1:27

Rits110389

20-Jun-09 1:27

OHHHH ,, YYYYYAAAAA

I have done It.
Now I am Able to connect the database in WPF web browser application

Thanks to all of them who helps me Smile | :)

$Shucks | :-\$ Roll eyes | :rolleyes:

Silverlight XAML controls [modified]

Kamal Gurnani18-Jun-09 20:35

Kamal Gurnani

18-Jun-09 20:35

Hi,
In my Silverlight Apps, I m unable to drag and drop 'Silverlight XAML controls' on the page.xaml surface. I could add the same by typing XAML markups. Whats the problem? I m using Visual Studio 2008 with VS 2008 SP1.

modified on Friday, June 19, 2009 4:13 AM

Re: Silverlight XAML controls

Mark Salsbery19-Jun-09 7:22

Mark Salsbery

19-Jun-09 7:22

The Visual Studio Silverlight XAML editor's GUI pane is currently only a preview window.
There's no editing features there.

VS 2010 will have it.

Mark

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

ElementHost and Transparency

Firedragonweb18-Jun-09 8:36

Firedragonweb

18-Jun-09 8:36

Hi,
I'm trying to write a Winforms Application, in which one Windows has the sole purpose to host a WPF Control.
The window itself is transparent (using the TransparencyKey-Property) and so are parts of the hosted WPF control(Using Background-Color=Transparent).
The ElementHost has its BackColorTransparent property set to true.
Problem is: The transparent areas of the WPF control are painted in the background color of the winforms-host. The one that should be replaced by transparency (because of the TransparencyKey).
Seems like an airspace-problem to me, but I'm not sure about that.
How can i achieve true transparency (so i can see the underlying desktop through my WPF Control)?
Any help would be appreciated.
Michael.

Re: ElementHost and Transparency

Gideon Engelberth18-Jun-09 12:58

Gideon Engelberth

18-Jun-09 12:58

I've never actually done it, but I don't see any reason you couldn't just have a WPF window and create and launch it from your Winforms Form. Then you don't have to worry about airspace and interop problems.

Re: ElementHost and Transparency

Firedragonweb19-Jun-09 1:40

Firedragonweb

19-Jun-09 1:40

Simple, but did it - didn't thought of it, because Visual Studio won't let you add one in a Winforms-project.
Thanks.

Assign names to ModelVisual3D's in code-behind

Etienne_12317-Jun-09 23:54

Etienne_123

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.

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

#realJSOP18-Jun-09 2:26

#realJSOP

18-Jun-09 2:26

Have you tried setting the Name property?

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

Etienne_12318-Jun-09 4:34

Etienne_123

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

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

Ray Cassick18-Jun-09 12:43

Ray Cassick

18-Jun-09 12:43

There isn't an x:Name property?

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

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

Etienne_12319-Jun-09 1:32

Etienne_123

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

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

Etienne_12321-Jun-09 10:45

Etienne_123

21-Jun-09 10:45

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

Thanks guys

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

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);

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

Etienne_12310-Jun-10 9:46

Etienne_123

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.

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

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.

Commands on a button inside a datatemplate in MVVM?

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?

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