Introducing .NET 4.0: with Visual Studio 2010

15.12. Save File Dialog Box

A major issue in previous versions of Silverlight was that there was no capability of transferring files to a user. Silverlight 3.0 has a new file save dialog box that allows users to save content to their local machine rather than to isolated storage. This example creates a text file and then gives the user the option to save it:

void cmdSave_Click(object sender, RoutedEventArgs e)
{
    SaveFileDialog SaveDialog = new SaveFileDialog();
    if (SaveDialog.ShowDialog() == true)
    {
        System.IO.Stream fs = null;

        try
        {
            fs = SaveDialog.OpenFile();
            byte[] info =
              (new System.Text.UTF8Encoding(true)).GetBytes("Test text to write to file");
            fs.Write(info, 0, info.Length);
        }
        finally
        {
            fs.Close();
        }
    }
}

15.12.1. Filtering Files in SaveDialog ...