For example:

<Grid x:Name="LayoutRoot">

        <Grid.RowDefinitions>

            <RowDefinition Height="100"></RowDefinition>

            <RowDefinition Height="Auto"></RowDefinition>

            <RowDefinition Height="*"></RowDefinition>

        </Grid.RowDefinitions>

        <Grid.ColumnDefinitions>

            <ColumnDefinition Width="100"></ColumnDefinition>

            <ColumnDefinition Width="Auto"></ColumnDefinition>

            <ColumnDefinition Width="*"></ColumnDefinition>

        </Grid.ColumnDefinitions>            

</Grid>

You can set a static width and height with any integer value. Alternatively you can use “*” which is used to indicate the row or column will take up any space not already used by the other columns or row. The other option is to set the row or column to “Auto”. This will cause the row or column to match the width or height of the controls that are in it.

To dynamically add rows and columns to a Grid control you will need to create a ColumnDefinition/RowDefinition object for each column/row you want, set the width/height and add it to the ColumnDefinitions/RowDefinitions collection of the Grid control.

For example:

LayoutRoot.ColumnDefinitions.Clear();

LayoutRoot.RowDefinitions.Clear();

for (column = 0; column < columnCount; column++)

{

    ColumnDefinition cd = new ColumnDefinition();

    cd.Width = new GridLength(columnWidth);

    LayoutRoot.ColumnDefinitions.Add(cd);

}

for (row = 0; row < rowCount; row++)

{

    RowDefinition rd = new RowDefinition();

    rd.Height = new GridLength(rowHeight);

    LayoutRoot.RowDefinitions.Add(rd);

}

When you specify what Grid Row and Column you want a control to belong to through XAML you do this by simply specifying the Grid.Row and Grid.Column properties in the declaration of the control.

For example, say you have a control called MapTile. To place it in Row 1 and Column 2 (zero based index) you would declare it in your XAML as such:

<my:MapTile Grid.Row="1" Grid.Column="2" />

To do this dynamically however you have to call Grid.SetRow() and Grid.SetColumn().

For example:

MapTile mt = new MapTile();                    

Grid.SetColumn(mt, column);

Grid.SetRow(mt, row);

Thanks,
–Mike

Silverlight supports BiDi through a property called FlowDirection. This property can be set to either RightToLeft or the default LeftToRight.

The following code below demonstrates this property in action:

<TextBlock FlowDirection="RightToLeft" Text="نصائح Silverlight من اليوم"/>

<TextBlock FlowDirection="RightToLeft" Text="Silverlight 每日提示"/>

<TextBlock FlowDirection="LeftToRight" Text="Silverlight Tips of the Day"/>

The first two TextBlocks flow RTL and the last one flows LTR.

Demo:

Note that this property can also be applied to other controls such as RichTextBox, ListBox, TextBox, etc.

Thanks,

–Mike

Normally Silverlight applications will only stay in full screen mode until a user hits the <ESC> key or until the application loses focus. For example, if the user has multiple monitors and they click on another application in another monitor this will cause the Silverlight application to return to windowed mode. If you want to prevent your Silverlight application from leaving full screen mode in this case you can do so by setting:

Application.Current.Host.Content.FullScreenOptions = 

                 System.Windows.Interop.FullScreenOptions.StaysFullScreenWhenUnfocused;

Now, when a user clicks on another application in another monitor they will be prompted with the following dialog:

If the user clicks ‘Remember my answer’ and the “Yes” button they will only need to be prompted this one time.

In the following demo below I have added a button that toggles full screen mode as well as an event that will update the status text to show whether we are in full screen mode or not:

App.Current.Host.Content.FullScreenChanged += ((sender, args) =>

{

    if (App.Current.Host.Content.IsFullScreen)

    {

        ModeTB.Text = "Mode=Full Screen";

    }

    else

    {

        ModeTB.Text = "Mode=Windowed";

    }

});

Demo:

Thanks,

–Mike

However, as with most things, you can leverage a Silverlight-enabled WCF server to do the dirty work for you. In this steps below I will be showing you the code needed to send the email through the SmtpClient object as well as some minor configurations you need to do to your server to get it working.

Step #1. Create a new Silverlight application.

Step #2. In your web site, add a Silverlight-enabled WCF web service (calling it something like MyService.svc)

Step #3. Add the following method to your MyService.svc.cs file:

[OperationContract]

public bool SendMail(string emailTo, string emailFrom, string msgSubject, string msgBody)

{

    bool success = false;

    try

    {

        MailMessage msg = new MailMessage();

        msg.From = new MailAddress(emailFrom);

        msg.To.Add(new MailAddress(emailTo));

        msg.Subject = msgSubject;

        msg.Body = msgBody;

        msg.IsBodyHtml = true;

        SmtpClient smtp = new SmtpClient();

        smtp.Host = "111.111.111.111"; // Replace with your servers IP address

        smtp.Port = 25;

        smtp.EnableSsl = false;

        smtp.Send(msg);

        success = true;

    }

    catch

    {

        success = false;

    }

    return success;

}

Step #4: Build the web site

Step #5: In your Silverlight application, right click on Service Reference and choose Add Service Reference…

Step #6: Click the Discover button, choose your service under “Services” and click the OK button.

Step #7. At this point, in your Silverlight code, you can create a ServiceReference client and call the method directly like this:

ServiceReferenceTest.MyServiceClient client = new ServiceReferenceTest.MyServiceClient ();

client.SendMailAsynce(emailTo, emailFrom, msgSubject, msgBody);

Note that if you were to execute this code without first installing the SMTP Sever via IIS you would get a “Send Failed” exception.

Step #8: In your server open up the Server Manager (ServerManager.msc) and choose Add Features.

Step #9: Select SMTP Server and click Next until the install is complete.

At this point if you were to run the code you would get the following exception:

Mailbox unavailable. The server response was: 5.7.1 Unable to relay for…

Step #10: Open up IIS 6 Manager (not IIS Manager)

Step #11: Right click on SMTP Virtual Server and choose Properties.

Step #12: Under the Access tab, choose Authentication and verify Anonymous access is checked.

Step #13: Under the Access tab, click the “Relay” button and add the IP of your server  making certain the “Only the list below” button is checked.

At this point you should be good to go!

Thanks,

–Mike

However, when pointing it back to localhost you might be stumped as to what port needs to be used. One easy way to determine this is to right click on your svc file in your web site, choose “Browse With”, select a browser and click the “Browse” button.

In your browser, copy the address from the address bar. This is the localhost address including the port you will want to configure your Silverlight service reference to point to. It will look like this:

http://localhost:21047/MyService.svc 

Thanks,
–Mike