Web Apps with C# - Application State
Mar
13
Written by:
2009/03/13 08:35 AM
More basic tutorials on web app development and C#. In this lesson we will be looking at a thing called application state. What it is, and how .NET manages it for us.
Application state is a collection of user-defined variables that are shared by all instances of an ASP.NET application. These are set and initialized when the Application_OnStart event fires on the loading of the first instance of the applications and are available till the last instance exits.
ASP.NET applications are hosted in a web server and are accessed over the stateless HTTP protocol. Attempting to manage state in Web applications goes against the fundamental design principles of the Web.
Application state can often times be confusing. You might be getting different results on your programming and web application than what you expected. Maybe you're having problems preserving your form data when you post back to the server. ASP.NET includes several options that help you preserve data on both a per-page basis and an application-wide basis. Some of these we have dealt with and touch on in past lessons. These features are as follows:
- View state
- Control state
- Hidden fields
- Cookies
- Query strings
- Application state
- Session state
- Profile Properties
In this lesson we will be looking at what these and how to use them and what they do. Browse over to our lessons at Web Apps with C# - Application State
Have fun, enjoy programming learn well. If you have any questions, please let me know.
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