Selected Value in Combobox - WPF Discussion Boards

Re: Kind of Urgent - Application.Current.Host.Source.Host is empty

21-Jul-10 16:12

I think I got the actual problem. It is not related to webserver stuffs. In your local devbox also you can come to this situation. If you run your Silverlight application from IIS you will always get the host name. If you execute the HTML file of your Silverlight application by double clicking on it, you will see it as empty string. Now come to the point of Visual Studio. There seems to be two option. One, if you run the application hosted on IIS or Visual Studio's inbuilt server you will find the value as the name of the host (generally localhost). In case, you don't have any web application project or your startup project is not your Web application project, you will see the value as empty string.

As I mentioned, please check the URL. If it is pointing to http://localhost/blahblah it will show proper value (in your case) and if it is pointing to some local drive path (i.e. C:\Documents\blahblah\blahblah.html etc.) it will show as empty string (in your team members case).

Please confirm that one first.

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#realJSOP22-Jul-10 4:00

Re: Kind of Urgent - Application.Current.Host.Source.Host is empty

22-Jul-10 4:00

KunalChowdhury wrote:
As I mentioned, please check the URL

Check *what* url?

In the clientconfig? That's set to localhost. We're running from the IDE, so it's using the internal server.

Kunal Chowdhury «IN»22-Jul-10 6:58

Re: Kind of Urgent - Application.Current.Host.Source.Host is empty

22-Jul-10 6:58

John Simmons / outlaw programmer wrote:
Check *what* url?

I mean to say here the URL in which you are running. Once run from your Visual Studio check in the browser address bar. If you don't have any web application added into the Silverlight solution or your Silverlight project itself set as a Startup Project, you will see this behavior. Just check the URL in your PC and also in your team mates PC (where you are seeing empty string). I think those are different and one is pointing to "localhost" (in your case) and the other is pointing to "physical path" (in your team mates case).

Let me know, what's the result.

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Kunal Chowdhury «IN»23-Jul-10 8:03

Re: Kind of Urgent - Application.Current.Host.Source.Host is empty

23-Jul-10 8:03

Any update on your problem?

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#realJSOP23-Jul-10 11:50

Error communicating with WCF service made through (WCF Software Factory (tool by microsoft))

23-Jul-10 11:50

We implemented a workaround.

nitin_ion21-Jul-10 2:12

nitin_ion

21-Jul-10 2:12

Following is the exception that occurs at client side(Silverlight) when we add reference of WCF service created through WCF Software Factory (tool by microsoft).

“An error occurred while trying to make a request to URI 'http://localhost:58159/WssWCFService.Host/WssService.svc'. This could be due to attempting to access a service in a cross-domain way without a proper cross-domain policy in place, or a policy that is unsuitable for SOAP services. You may need to contact the owner of the service to publish a cross-domain policy file and to ensure it allows SOAP-related HTTP headers to be sent. This error may also be caused by using internal types in the web service proxy without using the InternalsVisibleToAttribute attribute. Please see the inner exception for more details.”

I have already put the CrossDomain.xml and clientaccesspolicy.xml file at root location of WCF hosting project but still error exists.

Note: If we create simple WCF service without using WCF software factory tool then that works fine with existing silverlight application.

Any suggestions from anyone who has faced this type of problem will be appreciable

Selected Value in Combobox

yogesh_kumar_agarwal20-Jul-10 19:20

yogesh_kumar_agarwal

20-Jul-10 19:20

Dear All,

Here is my combobox in Silverlight

<br />
<ComboBox x:Name="drpUserList" Width="200" Height="30" Margin="5" VerticalAlignment="Center"  HorizontalAlignment="Left" DisplayMemberPath="FullName" SelectedValuePath="UserNumber"><br />

and i use

<br />
drpUserList.ItemsSource = e.Result;<br />

To fill my combobox, it works fine and will file the combobox with values but i want the selectedvalue which is my userid for selected user from dropdown. How could i get the value.

Re: Selected Value in Combobox

Abhinav S20-Jul-10 19:50

Re: Selected Value in Combobox

20-Jul-10 19:50

Have a look at this post[^].

The funniest thing about this particular signature is that by the time you realise it doesn't say anything it's too late to stop reading it.

My latest tip/trick - Silverlight *.XCP files

Arun Jacob20-Jul-10 20:50

Arun Jacob

20-Jul-10 20:50

You can directly bind from XAML like this,

SelectedValue="{Binding UserID}"

Arun Jacob
My Technical Blog : Code.NET

Re: Selected Value in Combobox

Kunal Chowdhury «IN»20-Jul-10 23:59

WPF, move window from a usercontrol mouse down event

20-Jul-10 23:59

Do the following:

var selectedUser = (from user in usersList
                   where user.UserId.Equals(selectedUserId)
                   select user).FirstOrDefault();

drpUserList.SelectedItem = selectedUser;

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fadedmaximus20-Jul-10 7:59

fadedmaximus

20-Jul-10 7:59

I have a custom user control loaded in the main window of the application. Inside of the custom user control I have a list box.

If the mouse left click is held down, I want the user to be able to drag the main window to a different location on the screen. Is it possible to handle this event inside of the listbox? If so, how can I go about doing it?

Re: WPF, move window from a usercontrol mouse down event

Jammer21-Jul-10 22:43

Jammer

21-Jul-10 22:43

Try this for a starting point ...

private void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
    this.DragMove();
}

Jammer
My Blog | Articles | DMon | SampleSort

Re: WPF, move window from a usercontrol mouse down event

zendar225-Jul-10 4:08

zendar2

25-Jul-10 4:08

There is a problem with MouseEvents in ListBox - if you click on ListBoxItem, event will be handled and your application will not get event. Possible solutions are useing preview event or using AddHandler for handled events. See this article for sample code: How to Attach to MouseDown Event on ListBox[^]

how to use SQL with Silverlight

Amit Spadez19-Jul-10 20:42

Amit Spadez

19-Jul-10 20:42

hello,
I'm new in Silverlight Development. I want to know how to include "System.Data.SQLClient" in Silverlight application.
In other words, I want to use SQlConnection in Silverlight application
.
Please help

Re: how to use SQL with Silverlight

Abhinav S19-Jul-10 22:20

Re: how to use SQL with Silverlight

19-Jul-10 22:20

vinci007 wrote:
System.Data.SQLClient

This is not part of the Silverlight runtime.
You can user either Web services or the Entity framework to access data.

The funniest thing about this particular signature is that by the time you realise it doesn't say anything it's too late to stop reading it.

My latest tip/trick - Silverlight *.XCP files

#realJSOP20-Jul-10 0:03

Re: how to use SQL with Silverlight

20-Jul-10 0:03

It's simply not possible. Silverlight apps can't connect directly to a database. You have to use a web service (or RIA services).

souidi abderrahman24-Aug-10 3:00

souidi abderrahman

24-Aug-10 3:00

you can use the ADO.net DataModel to mappe your Database or the LinqToSQl(dbml)
then you create a WCF for (ADO.Net DataModel) and a web serice for LinqToSql.

SL Toolkit v4 - Install issues

#realJSOP19-Jul-10 3:45

19-Jul-10 3:45

I already had v3 (Nov 2009) installed, and when I added a referenece to my app, everything was fine (the namespaces showed up). So then I installed v4 (Apr 2010), and I didn't see any namespaces for v4 when I tried to change the references.

To try to fix it, I uninstalled both V3 and V4 and then reinstalled v4, but I still don't get the v4 namespaces (or any namespaces for that matter since I uniinstalled v3).

What do I have to do to fix this? Anyone?

Abhinav S19-Jul-10 6:54

19-Jul-10 6:54

I believe the Silverlight toolkit v4 supports only SL4.
Are you using SL4?

The funniest thing about this particular signature is that by the time you realise it doesn't say anything it's too late to stop reading it.

My latest tip/trick - Silverlight *.XCP files

#realJSOP20-Jul-10 0:05

20-Jul-10 0:05

Yeah, I saw that, but that Delay guy (that's his last name) presented a demo using that version that works on our SL3 systems. I gave up and went back to the prior version (Nov 2009).

I honestly don't understand why they dropped support for SL3 - more often than not, I really hate Microsoft.

Abhinav S20-Jul-10 2:28

20-Jul-10 2:28

John Simmons / outlaw programmer wrote:
presented a demo using that version that works on our SL3 systems

I'd be very interested to know how he did that.

The funniest thing about this particular signature is that by the time you realise it doesn't say anything it's too late to stop reading it.

My latest tip/trick - Silverlight *.XCP files

#realJSOP20-Jul-10 2:36

20-Jul-10 2:36

I ran out of time to be really interested. I had to revert back to v3...

At home, I have SL4 so it's not an issue.