Live Example: http://silverlight.adefwebserver.com/ODataAuthenticationSample/

So you want to use OData but you need to secure the data? There are a ton of ways to do this, but this covers a simple way using ASP.NET Forms Authentication.

This is part II to the previous Blog (http://openlightgroup.net/Blog/tabid/58/EntryId/98/OData-Simplified.aspx) where we looked a simple OData example. This time we will make a simple Silverlight application that talks to an oData service.

Note, for this tutorial, you will also need to download and install RX Extensions from: http://msdn.microsoft.com/en-us/devlabs/ee794896.aspx, and the Silverlight Toolkit from: http://silverlight.codeplex.com.

As with the last tutorial, we will not use a database, just a simple collection that we are creating programmatically. This will allow you to see just the oData parts.

First, open up the project, in Visual Studio 2010 (or higher), from the zip file at the bottom of this link.



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Will OData eliminate the need for standard web services? Here is a simple example of how OData works. This example does not use a database connection so that you can easily see just the OData parts...

Over the years I have created several DotNetNuke Silverlight File managers. Each one is actually different and handles a different scenario. What they all have in common, is that they use Silverlight to enable uploads of large files.

Here is the breakdown:

Silverlight FileUploader – This allows you to upload all the files into one directory. No matter how many instances of this module you place in your site, they will all show the files from the single location.

Personal File Upload – This module allows each user of your DotNetNuke website to have their own file structure. You can also indicate which role can use this module.

DotNetNuke Silverlight File Manager...

I just posted a DotNetNuke version of the Silverlight 4 Drag and Drop File manager covered in these CodeProject articles:

Silverlight View Model Style File Manager Silverlight View Model Style File Manager Drag and Drop Upload (part 2) This project uses the View Model Style pattern that allows for a complete separation between program and design. This allows a Designer...

With “Simplified MVVM” you can simply place your web service methods in your Model. The problem you run into, is how do you make an asynchronous web service call and fill a collection in your ViewModel? One method I have employed in the past is to pass an instance of the ViewModel to the Model, however, the problem this causes, is that you have now tightly coupled your ViewModel and your Model. It is also difficult to consume your Model from multiple ViewModels when you do it this way.

What you really want to do, is place your web...

 

In my article Silverlight MVVM File Manager, I showed how a designer could use the MVVM pattern to create a UI from scratch, without writing a line of code. However, while the run-time file manager looked like this:

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I am really excited about the future of web development using Silverlight. Recent enhancements to Microsoft Expression Blend 4 have enabled the use of the MVVM pattern in a straightforward manner using behaviors.

I have posted a sample project that demonstrates an implementation of the MVVM (Model-View-View Model) pattern to create a simple Silverlight File Manager. This pattern allows a programmer to create an application that has absolutely no UI. The programmer only creates a ViewModel and a Model. A designer with no programming ability at all, is then able to start with a blank page and completely create...