Creating a Silverlight 3 Out Of Browser Application

Nathan Zaugg — Mon, 27 Apr 2009 19:09:00 GMT

Silverlight 2 is great! Silverlight 3 is AWESOME! My first experiences with the beta framework and tools have been overwhelmingly positive. In this post I’ll go over my experience creating an application using some of the new features and I’ll show how easy it is to make your Silverlight application available offline. To get started you’ll need the tools. Download the Silverlight Tools for Visual Studio 2008 SP1 from the official Silverlight website. It is also recommended that you download and install the Silverlight Toolkit from the same site.

Getting Started

After installing the Silverlight tools open Visual Studio and click File –> New –> Project. Click Silverlight in the project types section and select Silverlight Application from the Templates group.

When prompted make sure you check the Host the Silverlight application in a new Web site checkbox and press the OK button.

Once your project comes up we can get started in code. Open the MainPage.xaml file, open the toolbox and double click TwilightBlueTheme. This will add some references to our project and update the background of our window. That is how you use a built-in theme. Any tool box item that ends with Theme will change the look of your application.

Another great feature of the Silverlight 3 runtime is that we finally have full binding support! The most useful binding feature is binding the value of one control to another.

<Grid x:Name="LayoutRoot" Background="White">
    <twilightBlue:TwilightBlueTheme />
    <Button Height="30" Width="150" Content="This is my button Fool" 
            HorizontalAlignment="Left" VerticalAlignment="Top" 
            Margin="5" Click="Button_Click"  />
    <TextBlock Name="tbValue" Margin="50" 
               Text="{Binding ElementName=slider1, Path=Value}" />
    <Slider Name="slider1" Height="80" Width="300" 
            Margin="0 0 0 0" Value="3" />
</Grid>

Now, lets run it.

You can see that when you move the slider we can see it’s slider position value in the TextBlock we have on our form. Now that we have our ultra-simple app we want to make it available offline. We do that by opening the Properties\AppManifest.xml file and add the following:

<Deployment.ApplicationIdentity>
      <ApplicationIdentity 
          ShortName="Nate Test Application" 
          Title="Nate Test App">
          <ApplicationIdentity.Blurb>This is a test silverlight 
                        3 application out of the browser.</ApplicationIdentity.Blurb>
      </ApplicationIdentity>
  </Deployment.ApplicationIdentity>

Now run the application again. This time right click the Silverlight app and there is a new option to install the application.

You will then get a very simple “install” dialog. The install process is extremely fast!

And now we can launch our application from the start menu. Here is what it looks like when it is run outside of the browser.

To remove the application from your system, just right click to uninstall.

And that is it! Silverlight 3 works very well outside of the browser!

Visual Studio 2008 RTM Changes to LINQ to SQL

Nathan Zaugg — Wed, 19 Dec 2007 21:44:00 GMT

For those who haven't heard Visual Studio 2008 has officially been released! That also means that the .net Framework 3.5 has also been released! For those who have done the Beta's there is a couple of method renaming that has happened that will break your bits!

Summary

To add a record .Add and .AddAll has been replaced with .InsertOnSumbit and .InsertAllOnSubmit on your Linq Table.
To delete a record .Remove and .RemoveAll have been replaced with .DeleteOnSubmit and .DeleteAllOnSubmit on your Linq Table.

I think I can understand why they made the change. When you had a line that looked like "dbContext.Documents.Add( mydoc );" it never really felt like I was inserting a record into my database (in fact you are not inserting, not yet! Not until you call .SubmitChanges(); on the DataContext. The same goes for the delete. It was never clear if LINQ was going to "notice" the new record and make sure it is properly added to the database.

So here are are some Linq Samples that we all love!

// Insert a new Record
ADCDataContext db = new ADCDataContext();
Document d = new Document() {
     Description = "This is a doc",
     FileType = "doc",
     CreatedDate = DateTime.Now
};

db.Documents.InsertOnSubmit( d );
db.SubmitChanges();

int did = d.ID; // Notice how the document we just added has been updated.

// Updating a record (or multiple)
ADCDataContext db = new ADCDataContext();
Document doc = (from d in db.Documents
where d.ID == 551
select d).Single();
doc.ModifiedDate = DateTime.Now;
db.SubmitChanges();

// Delete a record (or multiple)
ADCDataContext db = new ADCDataContext();

var doc = from d in db.Documents
where d.CreatedDate > DateTime.Now.AddDays(-90)
select d;
db.Documents.DeleteAllOnSubmit(doc);
db.SubmitChanges();

// Many Custom Type :: Select many documents but return specific type
List<Notifications> changeNotifications = (from doc in db.Documents
                                                        where doc.CreatedDate > DateTime.Now.AddMonths(-1) ||
                                                        doc.ModifiedDate > DateTime.Now.AddMonths(-2)
                                                        select new Notification()
                                                        {
                                                             NotificationType = ChangeNotificationTypeEnum.All,
                                                             NotificationDate = doc.ModifiedDate ?? doc.CreatedDate,
                                                             Text = doc.Title
                                                        }).ToList();

Nates Stuff : Visual Studio 2008, Beta Software

Creating a Silverlight 3 Out Of Browser Application

Getting Started

Links:

Visual Studio 2008 RTM Changes to LINQ to SQL