WPF Discussion Boards

add controls dyanmically in Control Template

26-Mar-09 6:14

Piyush Vardhan Singh wrote:
Just i want dynamically change the Items Control(FileUploadControl.xaml) in scrollviewer

What do you want to change?

Mark

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

salon25-Mar-09 23:23

salon

25-Mar-09 23:23

I need to add styles for the controls in a panel dynamically,
I have created object of the control classes and setted the properties like this

properties.Add(TextBox.FontFamilyProperty, "Arial");

Now I want to add a ControlTemplate similarly, I have created object of ControlTemplate like this

ControlTemplate ctrl = new ControlTemplate();
 ctrl.TargetType = typeof(edtPanel);

 TextBlock txtbl = new TextBlock();
 txtbl.Text = "Test Cotnrol Tempalte";

 properties.Add(TextBox.TemplateProperty, ctrl);

edtPanel is the panel name where i need to add all the controls

Now i want to add the txtbl inside the ControlTemplate ctrl, but I don't have any idea how???

Does anybody help me?

Thanks in advance,

User Control drag and drop

thangavel198725-Mar-09 20:57

thangavel1987

25-Mar-09 20:57

i create a new user control and that is included in my window. and i try to drag an element from the user control and drop it in the window. in the user control i have listview . i drag the listview items from the listview and drop in the window. how i can get the listview control and that particular listview item???

I have to remove the listview item from the listview. any one pls help me......

Re: User Control drag and drop

ABitSmart25-Mar-09 21:33

Re: User Control drag and drop [modified]

25-Mar-09 21:33

It is difficult to answer the question without knowing how you are implementing the Drag and drop ? Taking a guess, removing the object from your object collection would remove it from the listview automatically ?

thangavel198725-Mar-09 21:38

thangavel1987

25-Mar-09 21:38

This is in user control

<ListView name="pieChart" >
<ListViewItem Style="{StaticResource listviewItemRes}" PreviewMouseLeftButtonDown="ListViewItem_PreviewMouseLeftButtonDown" />
<ListView />
this is in window

<Window x:Class="Music_Diary.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

Title="Window1" AllowDrop="True" Drop="Window_Drop" WindowStyle="None" Top="0" Left="0" >

private void ListViewItem_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{

DragDrop.DoDragDrop(this.pieChart, sender , DragDropEffects.Copy);
}

private void Window_Drop(object sender, DragEventArgs e)
{
//here what i am going to write to remove the listview item from the listview
}

modified on Thursday, March 26, 2009 3:48 AM

Re: User Control drag and drop

ABitSmart25-Mar-09 22:37

25-Mar-09 22:37

See this link DragDrop databound[^]
Note the GetBoundItemFromPoint method which might help you.

MVVM design doubt

anishkannan25-Mar-09 20:55

25-Mar-09 20:55

I am trying to design our project in MVVM design pattern.

My doubt is where is fix the binding property class in ViewModel

or Model.

ThankYou

ABitSmart25-Mar-09 21:02

25-Mar-09 21:02

I am not actually sure I understand your question. You can have ViewModel as DataContext of the View. The view defines all the binding with respect to the DataContext. Does that answer your question ?

anishkannan25-Mar-09 21:40

25-Mar-09 21:40

Thank you for the Replay

Here the bulk of data fetch from data base, So the Query class in

Model and that Result set class is ViewModel, so that result set is directly

binding to view class .

Or

The Result set class also in Model , that datas are return to the

another one collection class. that collection class is binding to the

View class

Which one is correct

Thank you...

ABitSmart25-Mar-09 21:52

25-Mar-09 21:52

My thoughts,
I would prefer the second method as the View should be independent of the Model. You have all your processing and business knowledge in the Model. You expose the data to View through the ViewModel. If you directly expose the Model to the View, the View won't be flexible to be used with some other Model in future. The point is, View should not be expected to know of Model, the ViewModel is responsible for everything it needs to know and do.

anishkannan25-Mar-09 22:12

25-Mar-09 22:12

Thank you for Replay and explanation.

ABitSmart25-Mar-09 22:16

25-Mar-09 22:16

Appreciate the reply. It would be very beneficial if you invest some time and read through the excellent MVVM resources on the net. You would get a fair picture of the pros and cons of different approaches being taken and what best suits your need.

anishkannan25-Mar-09 23:40

25-Mar-09 23:40

give some Path related to the MVVM design pattern
( if have code more useful to me )

Thank you

ABitSmart26-Mar-09 0:22

26-Mar-09 0:22

You will get abundant resources on the net. Here are some jems Josh Smith[^], Karl[^] to get you started.

Pete O'Hanlon25-Mar-09 23:02

Pete O'Hanlon

25-Mar-09 23:02

ABitSmart has given you good advice.

In MVVM, your View never binds to the Model - it always binds to the ViewModel. There are many reasons for this, but the biggest one is that a well designed MVVM application should be testable without the view, so you can "poke" at the ViewModel to exercise it without having to mock up a view.

Similarly, your ViewModel shouldn't access the underlying data - that's the purpose of the model. The ViewModel exists solely to map between a view and a model - it's that simple. So, why do this? Why not map the view to the model? After all, you can test a model in isolation. Well, part of this is because the model exists solely to handle data - it shouldn't provide extensive validation of values, it shouldn't perform business logic, it shouldn't receive invalid values. The ViewModel isolates the model from potentially harmful changes due to user error.

I hope this helps to clarify some of the rationale behind MVVM, and why things are done where they are.

"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 | Onyx

ABitSmart25-Mar-09 23:33

off topic, identify correct forum help

25-Mar-09 23:33

MVVM really simplifies Testability. I developed a similar architecture named "Part-View-Contract" for the product I was working on two years ago. Acropolis was beta and couldn't depend on its release time frame. It had a Plugin architecure, where Part(as in model),View and Contract(as in ViewModel) dependency were specified as plugin's in a plugin file and the whole UI built up dynamically from the file. The whole idea was to add/remove components by just editing the plugin file. It's been a while now :>

led mike26-Mar-09 8:17

led mike

26-Mar-09 8:17

This question in the XML forum might be legit (outside my areas to verify) and doesn't seem to be about XML but does include WF. So if this forum is appropriate maybe you could redirect him.

http://www.codeproject.com/script/Forums/View.aspx?fid=3421&msg=2981372[^]

Silverlight with WCF Services on IIS 7.0 Problems

Miraxz25-Mar-09 12:17

Miraxz

25-Mar-09 12:17

i have an application that was done using silverlight, in which i have used WFC services to establish the comunication with my database (SQL 2008), i have no problem running the application from visual studio 2008 but at the moment of mounting the application in my IIS 7.0 server and try to do any action that requieres communication using the WCF services, it throws me the next error:

User agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30618; InfoPath.2)
Fecha: Wed, 25 Mar 2009 18:06:51 UTC

Message: Unhandled Error in Silverlight 2 Application Exception during operation. The result is invalid. Check InnerException for exception details. in System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary ()
in Chat.ServiceReference.isValidCompletedEventArgs.get_Result ()
in Chat.popIniciarSesion.validation_isValidCompleted (Object sender, isValidCompletedEventArgs e)
in Chat.ServiceReference.ServicesClient.OnisValidCompleted (Object state)
Line: 1
Char: 1
Code: 0
URI: http://localhost/Chat.WEB/ChatTestPage.aspx

Re: Silverlight with WCF Services on IIS 7.0 Problems

Mark Salsbery25-Mar-09 13:35

Re: Silverlight with WCF Services on IIS 7.0 Problems

25-Mar-09 13:35

Any more useful info in the InnerException?

Miraxz wrote:
at the moment of mounting the application in my IIS 7.0 server

For the WCF service app:

If you're using web.config to configure the WCF services, make sure your app.config
that works in VS isn't overwriting your web.config if you're using VS to publish the app.

Make sure your svc file(s) are correct.

Are you able to hit your WCF service(s) directly from a URL in a browser?

For the ASP.NET with Silverlight app:

How are you configuring your service client endpoints?

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

Miraxz25-Mar-09 19:05

Miraxz

25-Mar-09 19:05

i have already tried to publish it from VS and also tried to copy the web application folder and neither of them has worked.

I also tried to open the service directly from the explorer and it seems to work fine, it shows the following message : "created a service".

Concerning the EndPoints i have them in basicHTTPBinding if that's what you mean, i have searched and don't see anymore for the innerException. Frown | :(

in fact.. something strange occurs.. i had executed mi application from visual studio at the moment of closing it the temporal asp server that it creates doesn't close, i didn't give it importance at all first but when i tried to run again my application, that i had mounted in my IIS it worked just perfectly. I stopped the temporal asp server and again it stopped working

I see no sense because I never connect to localhost using the port that gave me my temporary server asp...

Re: Silverlight with WCF Services on IIS 7.0 Problems

Mark Salsbery26-Mar-09 6:05

Re: Silverlight with WCF Services on IIS 7.0 Problems

26-Mar-09 6:05

Miraxz wrote:
when i tried to run again my application, that i had mounted in my IIS it worked just perfectly. I stopped the temporal asp server and again it stopped working

That sounds like the WCF service isn't configured correctly.

Can you post the <system.serviceModel> section of your WCF service web.config
as well as the <system.serviceModel> section of the Silverlight app's
ServiceReferences.ClientConfig file (the published ones, not the ones in the Visual Studio
project)?

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

Miraxz26-Mar-09 16:53

Miraxz

26-Mar-09 16:53

Hi!

in the web.config i have

<system.servicemodel>
<behaviors>
<servicebehaviors>
<behavior name="Chat.Web.ServicesBehavior">
<servicemetadata httpgetenabled="true" />
<servicedebug includeexceptiondetailinfaults="false" />
</behavior>
</servicebehaviors>
</behaviors>
<services>
<service behaviorconfiguration="Chat.Web.ServicesBehavior" name="Chat.Web.Services">
<endpoint address="" binding="basicHttpBinding" contract="Chat.Web.IServices">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
</service>
</services>
</system.servicemodel>

in ServiceReferences.ClientConfig

<system.servicemodel>
<bindings>
<basichttpbinding>
<binding name="BasicHttpBinding_IServices" maxbuffersize="2147483647">
maxReceivedMessageSize="2147483647">
<security mode="None" />
</binding>
</basichttpbinding>
</bindings>
<client>
<endpoint address="http://localhost:49245/Services.svc" binding="basicHttpBinding">
bindingConfiguration="BasicHttpBinding_IServices" contract="ServiceReference.IServices"
name="BasicHttpBinding_IServices" />
</endpoint></client>
</system.servicemodel>

ServiceReferences.ClientConfig not found it in my application mounted at the IIS, I guess is in the .XAP of my IIS ... or... I am wrong?

thk again...

Re: Silverlight with WCF Services on IIS 7.0 Problems

Mark Salsbery26-Mar-09 18:12