- SILVERLIGHT DOWNLOAD FILE FROM SERVER HOW TO
- SILVERLIGHT DOWNLOAD FILE FROM SERVER CODE
- SILVERLIGHT DOWNLOAD FILE FROM SERVER WINDOWS
While ((bytesToRead = stream.Read(bytes, 0, bytes.Length)) != 0) Using ( Stream output = arguments.Result) OpenFileDialog dialog = new OpenFileDialog ()Ĭlient.OpenWriteCompleted += (inputStream, arguments) => Private void upload1_Click( object sender, RoutedEventArgs e) On the click of the button, we are calling upload1_click method.
SILVERLIGHT DOWNLOAD FILE FROM SERVER CODE
In the above code snippet, we have a button and a TextBlock. The generic handler receives that stream and writes the content to the file on the server. The idea here is to get the file to upload from user, convert it into stream and send to the generic hander.
Let’s create a sample page to upload a file to the server. There is no way to upload a File on Silverlight the way we do in ASP.NET. Uploading file in Silverlight is not so straightforward.
SILVERLIGHT DOWNLOAD FILE FROM SERVER HOW TO
How to upload a file to the server in Silverlight? If there is an error, we are writing error. In this method we have first checked for error, if it is not we are getting the result of the download and reading to the stream and setting TextBlock3 text to the content of downloaded file. This method fires when the file download is complete. In this method we have set the value of the ProgressBar control to the progress percentage property of the DownloadProgressChangedEventArgs and then we have also set the TextBlock2 text to the % complete, bytes received and bytes left to download. This method fires when the file download starts. At last we have called OpenReadAsync method by passing the uri to download that basically starts downloading the file asynchronously. Next we have set the OpenReadCompleted event and DownloadProgressChanged event of the web client class. We can also download any local file from server provided that is inside the ClientBin folder. We have also specified a file to download in this case we are trying to download a RSS feed data. In this method, we have instantiated the WebClient class. StreamReader reader = new StreamReader (s) Void client_OpenReadCompleted( object sender, OpenReadCompletedEventArgs e) TextBlock2.Text = e.ProgressPercentage + "% done " + e.BytesReceived + " bytes received and " + e.TotalBytesToReceive + " bytes still needed." ProgressBar1.Value = e.ProgressPercentage Void client_DownloadProgressChanged( object sender, DownloadProgressChangedEventArgs e) RelativeOrAbsolute) Ĭlient.OpenReadCompleted += new OpenReadCompletedEventHandler (client_OpenReadCompleted) Ĭlient.DownloadProgressChanged += new DownloadProgressChangedEventHandler (client_DownloadProgressChanged) Private void Button_Click( object sender, RoutedEventArgs e) The content of the file downloaded is shown in the TextBlock3 that is in tern into ScrollViewer control. Once the download is complete, we should show the success message in TextBlock1. At the time of download we shall show the progress using ProgressBar control, % complete in the and amount of data left in the TextBlock2. On click of the Button, we shall write our code to download the file. In the above code snippet, we have three TextBoxes, a ProgressBar and a Button control. Get 500+ ASP.NET web development Tips & Tricks and ASP.NET Online training here.
This article is the continuation of my last article in Silverlight controls series, read last article here. To demonstrate this example, we shall create a xaml file and following is my code. How to download file and displaying progress status? Scroll to the section of COM Interoperability.Silverlight also allows us connect to remote machine or services, download and upload files, all these stuffs are done using WebClient class that exists into System.Net namespace.
SILVERLIGHT DOWNLOAD FILE FROM SERVER WINDOWS
However, if you don't care about that, you can do just about anything you want regarding file access by utilizing the Windows system COM objects (specifically the WScript.Shell and Scripting.FileSystemObject objects). The elevated permissions do not give you direct access to files outside of the "My" Folders, so I don't think you are going to be able to do what you want if you want to preserve cross platform compatibility to the Mac. I believe you can do whatever it is you're trying to do in Silverlight 4, but it requires elevated permissions (and consequently that it must be installed out of browser), and a little bit of COM hackery. (You don't want a Silverlight app randomly reading files on your hard drive without you knowing about it and silently uploading them somewhere now, do you?) Silverlight isn't a "browser standard", and a lot of it's seemingly crippled features are done so out of the name of security, and a safer user experience. If you are trying to open a file based on it's MIME extension and not prompt the user, you really can't do that in a Silverlight web application (for either case, MIME launching or opening a file without prompting the user).
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