Search results matching tags 'silverlight' and 'ASP.NET 3.5'

Doing CRUD Operations in Silverlight 2 Against ADO.NET Data Services

Ken Cox [MVP] — Thu, 13 Nov 2008 05:00:00 GMT

Many of us have been struggling to create business-oriented (LOB) forms using Silverlight 2 and ADO.NET Data Services. There are plenty of community samples on reading data, but a dearth of real-world content on creating and updating records.

The Silverlight SDK team has been paying attention to the community feedback and posted some tutorials on doing CRUD with Silverlight 2. Good work, team!

I've successfully completed two of the tutorials - creating a data model and inserting data. However, beware of the cross domain security issues. If you get a JavaScript 'Access Denied' error, be sure you're hosting the Silverlight web application and the data service (.svc) on the same domain. Let's hope a Silverlight update can remedy that issue (securely) some day.

Here are some tutorial/documentation URLs of note for Silverlight 2 developers:

Blocked by the Silverlight ManagedRuntimeError 4004

Ken Cox [MVP] — Sun, 19 Oct 2008 04:00:00 GMT

For my Silverlight 2 prototype business app, I wanted to try capturing JSON data from a WCF service and caching it in isolated storage. I found a nice example by Tim Heuer that I updated to the RTW version. After setting up the WCF service on a VPC running Windows Server 2008, I was able to fill the Silverlight datagrid with remote JSON data. Great!, I thought.

The hassles started when I moved the WCF code to a server out on the real Internet. The same Silverlight app on my workstation now throws a 4004 "ManagedRuntimeError" error on startup.

A quick analysis with Fiddler shows the problem. The first thing Silverlight 2 does is look for clientaccesspolicy.xml in the root of the domain. Then, it looks for crossdomain.xml.

In my local VPC (webservice2008), I control the root of the domain, so there's no problem putting a clientaccesspolicy.xml in the right location. However, at aspspider I'm just a non-paying tenant with a subdirectory called kjopc. If there's no clientaccesspolicy.xml (or one that denies access), I'm blocked.

The moral of the story is to make sure you've got full control over the Web site and domain before you try serving data up to Silverlight 2. Even when you own the domain, check that the hosting provider supports WCF. I use webhost4life.com for a couple of sites. Their low-end ASP.NET 3.5 plan doesn't include WCF.

Using the Silverlight Server Control in ASP.NET Pages

Ken Cox [MVP] — Wed, 27 Aug 2008 04:00:00 GMT

Microsoft makes available server controls that help you insert rich media such as Silverlight into your ASP.NET pages. If you’re confused about where to find the latest version of these controls, you’re in good company! Pre-release versions have appeared with various Community Technical Previews (CTP), ASP.NET Futures, and ASP.NET Extensions.

The code is now (at this hour, anyway) part of the Silverlight 2 Software Development Kit, a free download.

You need to download the full Silverlight SDK even though you only need a small part of it for use in ASP.NET page. Follow these steps to locate the required file and install it on your computer:

Browse to http://www.microsoft.com/downloads/.
In the Search box, enter Silverlight 2 Software Development Kit and click Go.
From the list of results, download the latest version of the SDK to a temporary directory on your hard drive.
Using Windows Explorer, double-click the downloaded file (probably named silverlight_sdk.exe) and follow the installation steps to install the complete contents of the SDK.

For a quick introduction to using the Silverlight server control in ASP.NET and Visual Web Developer 2008 Express, you can view a PDF that I've created as an update to my book ASP.NET 3.5 For Dummies:

http://www.kencox.ca/samplecode/Embedding Silverlight in ASPNET.pdf

Ken

Virtual Earth ASP.NET Control Released

Nuno.Godinho — Tue, 29 Jul 2008 04:00:00 GMT

As I said some while ago, there are several projects running related with Virtual Earth and one of them is the generation of a Server Control for ASP.NET that will allow us to develop solution and at the same time take some of the complexity of using Virtual Earth, and so here's the announcement that this control is made available as part of the Windows Live Tools July Refresh and you can even watch a video related to this subject on Channel 9 with Mark Brown that is a member of the Virtual Earth Team, where he talks about all the elements that were made available with this control.

One other very interesting project that is being developed is the Virtual Earth control for Silverlight and that you can see some of the results here. This project is named Deep Earth and is hosted on CodePlex and for now there's no release made available, but keep looking. For those of you that would like to use Virtual Earth with Silverlight you can use the codeplex project named Views that as even a video on Channel 9 that explains it's usage.

So good luck with your developments using Virtual Earth.

Microsoft Silverlight Tools Beta 1 for Visual Studio 2008

Ken Cox [MVP] — Wed, 05 Mar 2008 05:00:00 GMT

Wow! A load of goodies today!

http://www.microsoft.com/downloads/details.aspx?FamilyID=e0bae58e-9c0b-4090-a1db-f134d9f095fd&DisplayLang=en

This package is an add-on to the RTM release of Visual Studio 2008 to provide tooling for Microsoft Silverlight 2 Beta 1. It provides a Silverlight project system for developing Silverlight applications using C# or Visual Basic.
This download will install the following:

Silverlight 2 Beta 1
Silverlight 2 SDK Beta 1
KB949325 for Visual Studio 2008
Silverlight Tools Beta 1 for Visual Studio 2008

Silverlight Tools Beta 1 for Visual Studio 2008 includes:

Visual Basic and C# Project templates
Intellisense and code generators for XAML
Debugging of Silverlight applications
Web reference support
Integration with Expression Blend

ASP.NET 3.5 Extensions Preview

Ken Cox [MVP] — Wed, 05 Mar 2008 05:00:00 GMT

Check it out!

"The ASP.NET 3.5 Extensions Preview is a preview of new functionality being added to ASP.NET 3.5 and ADO.NET. The release includes ASP.NET MVC, ASP.NET Dynamic Data, ASP.NET controls for Silverlight, ADO.NET Data Services, Entity Framework runtime, and new features for ASP.NET AJAX."

http://www.microsoft.com/downloads/details.aspx?FamilyID=a9c6bc06-b894-4b11-8300-35bd2f8fc908&DisplayLang=en