 Wednesday, April 27, 2005
Fun time at Tulsa.NET UG
I gave a talk at Tulsa .NET Users Group on Monday 25 Apr on Windows Forms 2.0 Data Bining and had a great time. The group is large and growing, standing room only with over 40 folks. The group is well led by Caleb Jenkins, he is a great MC and keeps the group very dynamic and motivated.
Here are the slides and demos.
Philly Code Camp wrap up
It took me a few days to get to it, but here are the slides and demos from Sunday's talks at Philly Code Camp:
Smart Client Offline Data Caching and Synchronization: Slides Demos
Secure Smart Client Deployment with ClickOnce: Slides Demos
Sunday, April 24, 2005
3 Down, 2 to go
I'm speaking at the Philly Code Camp this weekend, and gave three talks today, and two tomorrow.
As promised to the attendees, here are the slides and demos from today for:
DataGridView Control: Slides Demos
Complex Data Binding in Windows Forms 2.0: Slides Demos
Extending ASP.NET with Custom Handlers and Modules: Slides Demos
Tuesday, April 19, 2005
Monday, April 18, 2005
Wednesday, April 13, 2005
Extending ASP.NET talk slides and demos from Texas
I had a great time speaking at the Austin .NET Users Group and Texas A&M .NET User Group last night and today, giving my talk on Extending ASP.NET with Custom Handlers and Modules
For those that attended, or others that are interested, here are the slides and demos that I gave. If you have grabbed earlier versions of these from when I have given the talk in the past, you may want to grab the demos again since I added a custom handler demo that does watermarking of images that I wrote on the plane ride to Texas monday.
Monday, April 11, 2005
Speaking at Austin .NET and Texas A&M .NET User Groups
If you are a Texan and live in the Austin or College Station area, come on out to the Austin .NET Users Group on 11 April or the Texas A&M .NET Users Group on 12 April to see my Extending ASP.NET with Custom HTTP Handlers and Modules talk. I will be covering the ASP.NET processing pipeline, how/why to create custom handlers as endpoints for ASP.NET requests, and how to create custom modules to perform per-request processing across your application.
Hopefully them Aggies won't throw a lynching party afterwards since I am a boat school graduate...
Tuesday, April 5, 2005
Deploying and Launching non-Whidbey Apps with ClickOnce
A common question when I give talks on ClickOnce is whether you can deploy legacy applications with ClickOnce. The answer depends on how legacy you mean.
If you have an existing managed (.NET) application that will run fine against the .NET framework version 2.0, then you can deploy it using ClickOnce, without needing to rebuild the application using Visual Studio 2005. To do so, you will have to create the directory structure in which to place your application on the deployment server, and can then use the MAGE tool to author and sign application and deployment manifests for the application.
The thing to realize is that when your application is deployed this way, it will be launched inside the host process created by ClickOnce (currently named AppLaunch.exe), which loads the .NET rumtime version 2.0 to host the application. Based on the way .NET runtime and framework unification work, that also means that the version of the .NET Framework class libraries that you will be running against will be the 2.0 versions. If your legacy .NET application uses any features in the framework that have breaking changes between 2.0 and past versions, you might encounter errors when your app is running through ClickOnce that you never experienced before. You also have to realize that the application might be running in partial trust depending on how you configure the security permissions in your application manifest, so that could prevent certain operations in your application that used to work fine when not executed through ClickOnce.
If you app is REALLY legacy (i.e. VB6, MFC, ATL, etc.), as in an unmanaged code executable, then no, you cannot deploy it as an executable through ClickOnce. The MAGE tool takes a look at the executable that you select as the entry point for the application, and won't let you specify an unmanaged executable as the entry point. Without an entry point, you don't have a valid launchable ClickOnce application.
Are there workarounds? Of course!! There are always workarounds. If the unmanaged code you are trying to deploy is in the form of a library, there is nothing stopping you from consuming unmanaged code from a ClickOnce application, provided that the ClickOnce application is granted either full trust, or at least the unmanaged code execution security permission through the application trust for the ClickOnce application deployment. If you really want to launch an unmanaged executable through ClickOnce, you could write a very simple shim managed application with .NET that just does a Process.Start. Again, you will need unmanaged code permission for that to work.
A simple example is available here.
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