What are Web Forms
Web Forms was the first Dot Net ASP.Net Web Framework. The technology was the easiest way for existing Microsoft Platform developers to move to the web.
ASP.NET Web Forms is a part of the ASP.NET web application framework and is included with Visual Studio. It is one of the four programming models you can use to create ASP.NET web applications, the others are ASP.NET MVC, ASP.NET Web Pages, and ASP.NET Single Page Applications.
Web Forms are pages that your users request using their browser. These pages can be written using a combination of HTML, client-script, server controls, and server code. When users request a page, it is compiled and executed on the server by the framework, and then the framework generates the HTML markup that the browser can render. An ASP.NET Web Forms page presents information to the user in any browser or client device.
Using Visual Studio, you can create ASP.NET Web Forms. The Visual Studio Integrated Development Environment (IDE) lets you drag and drop server controls to lay out your Web Forms page. You can then easily set properties, methods, and events for controls on the page or for the page itself. These properties, methods, and events are used to define the web page’s behavior, look and feel, and so on. To write server code to handle the logic for the page, you can use a .NET language like Visual Basic or C#.
What are Web Form Events
With web forms, there is a flow of events that are triggered as pages are processed by the underlying ASP.Net framework. There are common page events, user control (parts of pages), and control events. The list below shows the standard events and the sequence in which they fire.
The main event – get it?
BeginRequest - HttpModule
AuthenticateRequest - HttpModule
PostAuthenticateRequest - HttpModule
PostAuthorizeRequest - HttpModule
ResolveRequestCache - HttpModule
PostResolveRequestCache - HttpModule
PostMapRequestHandler - HttpModule
AcquireRequestState - HttpModule
PostAcquireRequestState - HttpModule
PreRequestHandlerExecute - HttpModule
PreInit - Page
Init - ChildUserControl
Init - UserControl
Init - MasterPage
Init - Page
InitComplete - Page
LoadPageStateFromPersistenceMedium - Page
ProcessPostData (first try) - Page
PreLoad - Page
Load - Page
Load - MasterPage
Load - UserControl
Load - ChildUserControl
ProcessPostData (second try) - Page
RaiseChangedEvents - Page
RaisePostBackEvent - Page
Click - Button - ChildUserControl
DataBinding - Page
DataBinding - MasterPage
DataBinding - UserControl
DataBinding - ChildUserControl
LoadComplete - Page
PreRender - Page
PreRender - MasterPage
PreRender - UserControl
PreRender - ChildUserControl
PreRenderComplete - Page
SaveViewState - Page
SavePageStateToPersistenceMedium - Page
SaveStateComplete - Page
Unload - ChildUserControl
Unload - UserControl
Unload - MasterPage
Unload - Page
PostRequestHandlerExecute - HttpModule
ReleaseRequestState - HttpModule
PostReleaseRequestState - HttpModule
UpdateRequestCache - HttpModule
PostUpdateRequestCache - HttpModule
EndRequest - HttpModule
PreSendRequestHeaders - HttpModule
PreSendRequestContent - HttpModule
