WebClient usage from Silverlight not working fo me (Security?) - WPF Discussion Boards

18-Aug-09 9:24

I'm a bit confused as to what you're actually asking. Are you asking whether you can host none-WPF windows inside the application so that they appear to be running inside a ribbon enabled WPF application? If you are, then yes you can - as long as you add the WindowsFormsIntegration and System.Windows.Forms assemblies as in the following:

<Window x:Class="WpfForm.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:wfi="clr-namespace:System.Windows.Forms.Integration;assembly=WindowsFormsIntegration"
    xmlns:wf="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"
    xmlns:myForm="clr-namespace:MyFormsNamespace;assembly=MyFormsApp"
    Title="Host in WPF" Height="400" Width="300"
    >

  <Grid>
    <wfi:WindowsFormsHost>
      <myForm:MyWindowForm />
    </wfi:WindowsFormsHost>
  </Grid>
</Window>

In this sample, you can see that I've added the windows form inside the WindowsFormsHost.

"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.

Re: Adding the WPF Ribbon Bar as a resource for my other apps

trey white18-Aug-09 10:26

trey white

18-Aug-09 10:26

Thanks Peter for your reply, but I'm guessing that when you said "host none-WPF windows" you meant NON-WPF windows, and the answer is no. All of the projects that have been coded already are in WPF(with a c# back code), and what I would like to do is have a ribbon bar(which I've already created as a WPF application per uxpassion.com) at the top of each of my apps as to give the Office 2007 impression and functionality but with my own code of course Wink | ;)

I have it set up right now in my ribbon for taking the functions to call from each app, but I haven't got the ribbon to act as a resource ontop of each app's GUI. Does this make sense or clear what I would like to do? Thanks again

Re: Adding the WPF Ribbon Bar as a resource for my other apps

Pete O'Hanlon18-Aug-09 10:46

18-Aug-09 10:46

trey white wrote:
host none-WPF windows" you meant NON-WPF windows, and the answer is no

No - I meant the UK English language version which is none. The simplest way to achieve what you want is to implement the other applications as user controls.

"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.

Re: Adding the WPF Ribbon Bar as a resource for my other apps

trey white18-Aug-09 11:00

trey white

18-Aug-09 11:00

oh ok, sorry I misunderstood you. Is there any way you could expand on that a little? Do you mean I would have to add ALL of my apps to my ribbon bar as user controls(kind of like you did with the first response in XAML?) or just implement them through the code behind files? Sorry, I'm no pro at WPF(or the new WPF ribbon bar) and still getting used to it's massive functionality and robustness so any links or sample code would be MUCH appreciated Big Grin | :-D

Thanks again!

Re: Adding the WPF Ribbon Bar as a resource for my other apps

Pete O'Hanlon18-Aug-09 11:11

18-Aug-09 11:11

trey white wrote:
Do you mean I would have to add ALL of my apps to my ribbon bar as user controls(kind of like you did with the first response in XAML?) or just implement them through the code behind files?

You can do this with either approach - XAML translates into IL in the same way that code behind does. Tell you what, take a look at my article here[^] which should clarify things a lot more.

"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.

WebClient usage from Silverlight not working fo me (Security?)

pisanis18-Aug-09 5:06

pisanis

18-Aug-09 5:06

Hi,

I have a strange problem I cannot seem to solve. I'm using, in Silverlight, and WebClient to invoke a REST service that returns an XML document.
(the example below shows this document as being accessible via the url: "http://localhost/persons.xml"

This is the callback code from a button defined in my XAML :

Private Sub getdata_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)

Dim wcProxy As New WebClient()
Dim Uri As New System.Uri("http://localhost/persons.xml")

'setup delegate
AddHandler wcProxy.DownloadStringCompleted, AddressOf wcProxy_DownloadStringCompleted

' invoke service
wcProxy.DownloadStringAsync(Uri)
End Sub

Private Sub wcProxy_DownloadStringCompleted(ByVal sender As Object, ByVal e As System.Net.DownloadStringCompletedEventArgs)

Dim doc As New XDocument
doc = XDocument.Parse(e.Result) <<< ERRORS HERE <<<<
...
...

End Sub

The error on the line marked above says:

An exception occurred during the operation, making the result invalid. Check InnerException for exception details.

and: e.Error.InnerException.Message says: "Security Error"

Not sure why this is. In at atempt to fix this, I have defined a file called 'clientaccesspolicy.xml' in my ASP.NET Web Application, with te following contents:

<access-policy>
<cross-domain-access>
<policy>
<allow-from>
<domain uri="*">

<grant-to>
<resource include-subpaths="true" path="/">

However - I'm not 100% sure if I need this at all, and even if I did, if I implemented it correctly.

I've made no other changes to the default .WEB project that the Silverlight 'New Project' creates for me.

Thanks - S.

Re: WebClient usage from Silverlight not working fo me (Security?)

Mark Salsbery18-Aug-09 12:54

Mark Salsbery

18-Aug-09 12:54

You should probably make sure e.Error is Nothing before trying to use
e.Result in your DownloadStringCompleted handler.

Are you showing the entire error strings returned in the e.Error exceptions?

If this is a cross-domain issue...

Your clientaccesspolicy.xml needs to be published/copied to the root directory of the
website at the domain you are accessing.

What's in your clientaccesspolicy.xml file?

Here's one that should allow any Silverlight cross domain service calls:

<?xml version="1.0" encoding="utf-8"?>
<access-policy>
  <cross-domain-access>
    <policy>
      <allow-from http-request-headers="*">      
        <domain uri="http://*"/>
        <domain uri="https://*"/>
      </allow-from>      
      <grant-to>      
        <resource path="/" include-subpaths="true"/>
      </grant-to>      
    </policy>
  </cross-domain-access>
</access-policy>

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

Re: WebClient usage from Silverlight not working fo me (Security?)

pisanis19-Aug-09 4:42

pisanis

19-Aug-09 4:42

Thanks. that was part of the problem....

I'm also using Apache not IIS, and couldn't succesfully locate the ROOT folder for the web app hosting the service. I switched to IIS, and, got it working which is enough for me for now.

Thanks again

Programatically Adding Wpf Custom controls into vs2008 toolbox in windows application.

sivat51818-Aug-09 0:13

sivat518

18-Aug-09 0:13

Hi All,

I have created a simple wpf Custom control and i am trying to add it to vs2008 toolbox so that it can be drag and dropped as normal standard controls.
But i am not able to add it.
Code to add the custom controls to toolbox is in windows application using VB.
this is the method which i have did.

toolboxtabs.Item("WPFCustomControls").ToolBoxItems.Add("TextBox", "WpfCustomControlLibrary.dll", vsToolBoxItemFormat.vsToolBoxItemFormatDotNETComponent)

Can anyone help me out i am great urgency Confused | :confused:

Thanks in Advance

Re: Programatically Adding Wpf Custom controls into vs2008 toolbox in windows application.

User 27100921-Aug-09 3:04

User 271009

21-Aug-09 3:04

Can you add it using Choose Items... on the toolbox?

Cheers, Karl

» CodeProject 2008 MVP, CodeProject 2009 MVP

My Blog | Mole's Home Page |
XAML Power Toys Home Page

Just a grain of sand on the worlds beaches.

modified 27-Feb-21 21:01pm.

Re: Programatically Adding Wpf Custom controls into vs2008 toolbox in windows application.

sivat51826-Aug-09 21:47

sivat518

26-Aug-09 21:47

I have to do it Programatically.
I am working in Wpf, Visual studio 2008

Thanks In Advance

Binding images to an ImageButton at runtime

Wolfram Steinke17-Aug-09 16:47

Wolfram Steinke

17-Aug-09 16:47

I'm finally getting a chance to work with WPF. Making a Button with an Image on it is no problem as long as I don't mind embedding the image in the resource.
What can't get working is to have it load the image from file in a subfolder under the Application at runtime. I don't want it in the embedded resources.

Any ideas? It must be possible to do.

Happy programming!!

Pete O'Hanlon17-Aug-09 22:41

17-Aug-09 22:41

An easy way to do this is to specify a Uri to the image as in the following code:

myImage.BeginInit();
myImage.Source = new BitmapImage(new Uri(file));
myImage.EndInit();

Obviously, you'll have to pass the fully qualified file name into the Uri, but this code will work.

"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.

Wolfram Steinke18-Aug-09 14:15

Wolfram Steinke

18-Aug-09 14:15

How does one go about putting it on the button?
It must be possible but documentation on this topic worse than ever and impossible to find.

Happy programming!!

Christian Graus18-Aug-09 15:24

Christian Graus

18-Aug-09 15:24

There same property you set in XAML, you can set in code.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Pete O'Hanlon18-Aug-09 21:42

18-Aug-09 21:42

It's not that hard to do, and there are plenty of samples on the web. Your XAML looks like this:

<Button>
  <Image x:Name="myImage" />
</Button>

"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.

Wolfram Steinke19-Aug-09 1:43

Wolfram Steinke

19-Aug-09 1:43

Thanks for your assistance.
There are heaps of examples that load images from embedded resources for sure. So far I have found only one that half works the way I need it to work.

Happy programming!!

Pete O'Hanlon19-Aug-09 2:22

19-Aug-09 2:22

I'm glad I could help then.

"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.

WPF user interface stored in DB

Paint.Net for WPF

sufiyan_ansari117-Aug-09 6:27

sufiyan_ansari1

17-Aug-09 6:27

Hi,

How do I import the DLL Libraries and of Paint.Net and use them in my WPF Application?
Paint.Net is an Open Source Program and it comes bundled with the DLL Libraries but when i try loading them in the WPF/VS08/VS10 it says cannot load the DLL.

Thank You,
Cheers.

Re: Paint.Net for WPF

Christian Graus17-Aug-09 16:54

Christian Graus

17-Aug-09 16:54

What does it say EXACTLY ?

You're not going to be able to do what you're trying to do, in any case.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

kstxx17-Aug-09 0:49

kstxx

17-Aug-09 0:49

Hi.

I have a strange problem to solve. I am new in WPF. I have a gruop of people(admins) who can modify user interface by Visual Studio and we have group who do not have Visual Studio installed and they are not programmers or admins but they should have a ability to modify user interface - the question is how to do that. Can we store user interface made by Visual Studio in database? Can we make own application which can be used just like Visual Studio by people who are not admins or programmers - this app should load interface from DB and modify it and then save it back to the DB. In this app I need drag/drop functionallity, toolbox with controls loaded from DB and Canvas on which user will modify interface. Finally user can save his work to DB and programmers should have ability to load this interface and open it in Visual Studio.

regards

Re: WPF user interface stored in DB

Pete O'Hanlon17-Aug-09 1:13

17-Aug-09 1:13

mpiotrek wrote:
Can we store user interface made by Visual Studio in database?

You could, as long as the UI is done entirely in XAML this isn't too hard to achieve. If you use a pattern like MVVM (google it), you don't need to put code behind the view at all. Alternatively, these users could use Expression Blend which was designed for just this task.

"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.