why Scrollviewer clip content in wpf - WPF Discussion Boards

Jeroen De Dauw31-Dec-09 7:52

31-Dec-09 7:52

Found the solution here: http://social.msdn.microsoft.com/Forums/en-US/csharpgeneral/thread/9c8dd0c7-79fc-4de3-a116-acde79314c1e[^]

Jeroen De Dauw
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Silverlight ComboBox Binding Issue [modified]

Programm3r30-Dec-09 2:18

Programm3r

30-Dec-09 2:18

Hi all,

I am making use of a DataForm to display my data. I have made use of the DataForm edit template to customize the layout of the form. Data is returned and is being displayed within the DataForm. The problem is that, as soon as I start navigating (2 navigation clicks) with the DataFrom, only the ComboBox 'looses' it's binding on the SelectedItem (although it's selected item was data bound and then it just goes blank Confused | :confused:

).

The back end code consists of a generic list List<string> and a string variable that has the value of each data item that is returned.

..
public List<string> Category { get; set; }
public string CategoryName { get; set; }
..

The XAML code:

...
<dataFormToolkit:DataField DescriptionViewerPosition="Auto" LabelPosition="Left" LabelVisibility="Visible" Label="Category">
    <ComboBox ItemsSource="{Binding Category}"  SelectedItem="{Binding CategoryName, Mode=TwoWay}" />
</dataFormToolkit:DataField>
...

Any reason why this is happening and how I can fix it?
Many thanks in advance.
Kind regards

The only programmers that are better C# programmers, are those who look like this -> Green Alien | [Alien]

Programm3r
My Blog: ^_^

modified on Wednesday, December 30, 2009 8:36 AM

Re: Silverlight ComboBox Binding Issue

MikeGoatly3-Sep-10 5:14

MikeGoatly

3-Sep-10 5:14

Hey. This problem has been bugging me a lot lately - Something really odd is happening in the framework. What's happening is the data field control is modifying the bindings on the control and re-setting them. Setting the SelectedItem works fine, but when it comes to re-set the ItemsSource property the binding for the *SelectedItem* property *vanishes* without a trace.

The only workaround I have at the moment is to make the ItemsSource binding TwoWay, and ensuring that the property it's bound to is read-only. This stops the code from modifying the ItemsSource binding.

However, I'm now finding that the bindings are disappearing under other circumstances as well (it looks like it's happening occasionally when there is more than 1 combo box in the form) - I haven't solved that one yet.

Cheers,
Mike

WndProc equivalent in WPF?

pbalaga29-Dec-09 10:41

pbalaga

29-Dec-09 10:41

Is there a single method in WPF that can handle all types of input at once, like WndProc in Windows Forms? Or do I have to capture and forward each event separately?

Re: WndProc equivalent in WPF?

ProtoBytes29-Dec-09 11:23

ProtoBytes

29-Dec-09 11:23

Hmm... I never knew there was such a thing for WinForms.

Good Question.

Re: WndProc equivalent in WPF?

teejayem29-Dec-09 12:20

teejayem

29-Dec-09 12:20

Badda Bam![^]

Don't be overcome by evil, but overcome evil with good

Re: WndProc equivalent in WPF?

pbalaga29-Dec-09 23:12

pbalaga

29-Dec-09 23:12

Thanks for your reply.

Of course, it should do the job. Anyway, it seems to be a pretty strange work-around. You're provided with dozens of overridable methods for handling input, but you have to use native hooks...

why Scrollviewer clip content in wpf

wasimsharp28-Dec-09 23:08

wasimsharp

28-Dec-09 23:08

Hi friend
can any body tell me why ScrollViewer Clip its content. is set CliptoBound property to false.
any body new any solution for it.

WANTED wasim khan(Killed 50 Innocent Buggs, Distroyed 200 Exception, make 5 Project Hostage) any Compnay Hire him will pay 30,000. Best place where u can get him is Sorcim Technologies Murre Road RWP

Re: why Scrollviewer clip content in wpf

Mark Salsbery29-Dec-09 10:26

Mark Salsbery

29-Dec-09 10:26

wasimsharp wrote:
why ScrollViewer Clip its content

That's the way the ScrollViewer is designed to work.
The ScrollViewer uses a fixed-size viewport to view a
portion of the scrollable content.

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

Do you know any ListViewItem samples in WPF?

Mohammad Dayyan28-Dec-09 16:48

Mohammad Dayyan

28-Dec-09 16:48

Hi guys.
I'm looking for a sample of ListView that contains some ListViewItems in XAML code.
I have been searching the web but I couldn't find any useful sample !

Could you guide me ?
Thanks.

Re: Do you know any ListViewItem samples in WPF?

ProtoBytes29-Dec-09 9:32

ProtoBytes

29-Dec-09 9:32

As I stated in the other thread:

try google:

'ListView ListViewItem XAML .NET site:msdn.com'

Re: Do you know any ListViewItem samples in WPF?

Mohammad Dayyan29-Dec-09 22:50

Mohammad Dayyan

29-Dec-09 22:50

Thanks TheArchitectmc∞ , I've done it former, but I couldn't find anything special.

pcmedia28-Dec-09 16:05

pcmedia

28-Dec-09 16:05

how can login authentication (use windows media service 2008) in silverlight 3

Re: login authentication in silverlight 3

Abhinav S28-Dec-09 16:28

Abhinav S

28-Dec-09 16:28

Are you talking about IIS media services?
Link here [^].

There's nothing left in my right brain and nothing right in my left brain.

Data class implementations not fully passed to Silverlight?

Michael Eber28-Dec-09 11:56

Michael Eber

28-Dec-09 11:56

Here is my scenario:
Data Layer : running as an simple web service as required by Silverlight
Entities are generated from the database tables
An extended class is defined with the following additions:

public partial class CustomerMaster
{
    public override string ToString( )
    {
        return this.CustomerName;
    }
}
public partial class CustomerLocation
{
    public override string ToString( )
    {
        return this._LocationID;
    }
}

CustomerMaster and CustomerLocation are two entities derived from the database.

Silverlight side

When I get my data I bind a list box to the result of my async query.

I get the list of customers no problem.
But listbox calls ToString() on my objects and I'm getting the default behaviour (namespace) not my overridden code!!!???

Anyone know a reason why this would happen?

Re: Data class implementations not fully passed to Silverlight?

Abhinav S28-Dec-09 16:42

Abhinav S

28-Dec-09 16:42

Methods are not part of the DataContract so they won't be available when you create the proxy for the client.

There's nothing left in my right brain and nothing right in my left brain.

Re: Data class implementations not fully passed to Silverlight?

Michael Eber30-Dec-09 11:28

Michael Eber

30-Dec-09 11:28

yeh...found I had to specify the field in the data to display within the properties.

grid in 3D Environment

sajib_bd26-Dec-09 20:03

sajib_bd

26-Dec-09 20:03

how can i draw grid in 3D environment using wpf (suppose i want to draw i room using line)

Re: grid in 3D Environment

ProtoBytes28-Dec-09 12:06

ProtoBytes

28-Dec-09 12:06

Hmm, well Do you want to draw a room or a grid?

3D WPF drawing is not really lines.

Here is a simple cube mesh:

// Define 3D mesh object
MeshGeometry3D mesh = new MeshGeometry3D();
// Front face
mesh.Positions.Add(new Point3D(-0.5, -0.5, 1));
mesh.Positions.Add(new Point3D(0.5, -0.5, 1));
mesh.Positions.Add(new Point3D(0.5, 0.5, 1));
mesh.Positions.Add(new Point3D(-0.5, 0.5, 1));
// Back face
mesh.Positions.Add(new Point3D(-1, -1, -1));
mesh.Positions.Add(new Point3D(1, -1, -1));
mesh.Positions.Add(new Point3D(1, 1, -1));
mesh.Positions.Add(new Point3D(-1, 1, -1)); 

mesh.TriangleIndices.Add(0);
mesh.TriangleIndices.Add(1);
mesh.TriangleIndices.Add(2);
mesh.TriangleIndices.Add(2);
mesh.TriangleIndices.Add(3);
mesh.TriangleIndices.Add(0);
// Back face
mesh.TriangleIndices.Add(6);
mesh.TriangleIndices.Add(5);
mesh.TriangleIndices.Add(4);
mesh.TriangleIndices.Add(4);
mesh.TriangleIndices.Add(7);
mesh.TriangleIndices.Add(6);
// Right face
mesh.TriangleIndices.Add(1);
mesh.TriangleIndices.Add(5);
mesh.TriangleIndices.Add(2);
mesh.TriangleIndices.Add(5);
mesh.TriangleIndices.Add(6);
mesh.TriangleIndices.Add(2);

I found this on The Code Project Article:

'WPF 3D Primer'
By: Dario Solera

~TheArch

Changing ColumnDefinitions in a StoryBoard (WPF) ?

Mohammad Dayyan25-Dec-09 4:40

Mohammad Dayyan

25-Dec-09 4:40

Hi friends.
Can we change ColumnDefinitions via a StoryBoard in WPF?
e.g : I wanna change the following ColumnDefinitions

<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition Height="0*"/>
</Grid.ColumnDefinitions>

to this one :

<Grid.ColumnDefinitions>
<ColumnDefinition Height="0.585*"/>
<ColumnDefinition Height="0.415*"/>
</Grid.ColumnDefinitions>

Thanks in advance.

Re: Changing ColumnDefinitions in a StoryBoard (WPF) ?

AspDotNetDev27-Dec-09 12:17

AspDotNetDev

27-Dec-09 12:17

To anybody else reading this, this question has been answered here.

[Forum Guidelines]

WPF AutoIT/Flash question

jayvee102225-Dec-09 0:16

jayvee1022

25-Dec-09 0:16

Hi, i was wondering is it possible to integrate autoit into an wpf application? Also is it possible for C#/WPF to get dynamic data displayed on a flash application? Example: a flash game, be able to get the current score you have and display it on the wpf application. The flash game is made by a 3rd party so I dont have source or resources to it. Thanks.

Re: WPF AutoIT/Flash question

ProtoBytes28-Dec-09 11:54

ProtoBytes

28-Dec-09 11:54

This is really an intreop question.

I have no idea what AutoIt is.

As for Flash to WPF.

Hmm, My question is how do you put FLAH into a WPF application. I think what you are really asking is how to interop between Flash and Silverlight. You can host WPF in a browser but it is not safe for normal use over the internet etc.

Well, I'm not sure on the Flash side but Silverlight can script to HTML DOM. That is how I would do it. Short of that, you would have to write a plug-in for both applications and have the server host some sort of COM between the two. In this case it wouldn't matter what you used. However you don't have the source. So that's not an option.

D'Oh! | :doh:

The Webbrowser in WPF can’t display page unless mouse moving on.

CooperWu23-Dec-09 17:18

CooperWu

23-Dec-09 17:18

The Webbrowser in WPF can't display page unless mouse moving on.

This bug can't reproduce in my demo project, and I don't know how to fix it. I tried:

call WindowsFormsHost.UpdateLayout. (Failed)
call WindowsFormsHost's child, a WebBrowser control. call WebBrowser.Update or WebBrowser.Refresh. (Failed)
call WindowsFormsHost.InvalidateVisual() (Failed)
Is there other solution?

I even simulated mouse moving on like this:

AutomationElement element = AutomationElement.FromHandle(winAdHoster.Handle);
ATGTestInput.Input.MoveToAndClick(element);

this failed again.

Glad to discuss with you and best wishes.

Where do you see Silverlight a few years from now?

Goalie3523-Dec-09 4:52

Goalie35

23-Dec-09 4:52

Hello. My company is looking into beginning to integrate Silverlight into some of our upcoming web projects soon, but before we do, I want to get some opinions from those who are already experienced in developing in it.

From what I've read, Silverlight seems to be slowly picking up marketshare (the stats I read showed it's now installed in 40% of all users computers), which is a good thing...but what do you see for the future of Silverlight? Is it here to stay or would you consider its future unknown at this point?

Have your users voiced reluctance to install Silverlight or have you seen an uptick in customer service calls/emails because they couldn't or didn't want to install Silverlight to view your web pages?

Just trying to weigh our options at this point before we dive into it.

Thanks.

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