| Developer(s) | Microsoft |
|---|---|
| Initial release | January 5, 2002; 23 years ago (2002-01-05) |
| Stable release | |
| Repository | |
| Written in | .NET languages |
| Operating system | Microsoft Windows,Linux,macOS |
| Platform | .NET Framework |
| Type | Web framework |
| License | Proprietary software[2] |
| Website | dotnet |
| Filename extension | .aspx,.cshtml,.vbhtml |
|---|---|
| Internet media type | text/html |
| Developed by | Microsoft |
ASP.NET is aserver-sideweb-application framework designed forweb development to producedynamic web pages. It was developed byMicrosoft to allowprogrammers to build dynamicweb sites,applications andservices. The name stands for Active Server Pages Network Enabled Technologies.
It was first released in January 2002 with version 1.0 of the.NET Framework and is the successor to Microsoft'sActive Server Pages (ASP) technology. ASP.NET is built on theCommon Language Runtime (CLR), allowing programmers to write ASP.NET code using any supported.NET language. The ASP.NETSOAP extension framework allows ASP.NET components to process SOAP messages.
In 2016, Microsoft releasedASP.NET Core as ASP.NET's successor. This new version is a re-implementation of ASP.NET as a modularweb framework, together with other frameworks likeEntity Framework. The new framework uses the new open-source.NET Compiler Platform (codename "Roslyn") and iscross platform.ASP.NET MVC, ASP.NET Web API, and ASP.NET Web Pages (a platform using onlyRazor pages) have merged into a unified MVC 6.[3]
ASP.NET supports a number of programming models for building web applications:[4]
Other ASP.NET extensions include:
System.Web.IHttpHandler interface. Unlike ASP.NET Pages, they have no HTML-markup file, no events and other supporting. All they have is a code-file (written in any.NET-compatible language) that writes some data to the server HTTP response. HTTP handlers are similar toISAPI extensions.OnIIS 6.0 and lower, pages written using different versions of the ASP framework cannot sharesession state without the use of third-party libraries. This does not apply to ASP.NET and ASP applications running side by side on IIS 7. With IIS 7.0, modules may be run in an integrated pipeline that allows modules written in any language to be executed for any request.[7]
It is not essential to use the standard Web forms development model when developing with ASP.NET. Noteworthy frameworks designed for the platform include:
ASP.NET's release history tightly correlates with the.NET Framework releases:
| Date | Version | Remarks | New ASP.NET related features |
|---|---|---|---|
| January 16, 2002 | Old version, not maintained: 1.0 | First version released together withVisual Studio .NET |
|
| April 24, 2003 | Old version, not maintained: 1.1 | released together withWindows Server 2003 released together withVisual Studio .NET 2003 |
|
| November 7, 2005 | Old version, not maintained: 2.0 | codenameWhidbey |
|
| November 21, 2006 | Old version, not maintained: 3.0 | Released withWindows Vista |
|
| November 19, 2007 | Old version, not maintained: 3.5 | Released withVisual Studio 2008 andWindows Server 2008 |
|
| August 11, 2008 | Old version, not maintained: 3.5 Service Pack 1 | Released with Visual Studio 2008 Service Pack 1 |
|
| April 12, 2010 | Old version, not maintained: 4.0 | Released withVisual Studio 2010 Parallel extensions and other.NET Framework 4 features | The two new properties added in the Page class are MetaKeyword and MetaDescription. |
| August 15, 2012 | Old version, not maintained: 4.5 | Released withVisual Studio 2012 andWindows Server 2012 forWindows 8 Parallel extensions and other.NET Framework 4.5 features | |
| October 17, 2013 | Old version, not maintained: 4.5.1 | Released withVisual Studio 2013[8] forWindows Server 2012 R2 andWindows 8.1 | |
| May 5, 2014[9] | Old version, still maintained: 4.5.2 |
| |
| July 20, 2015[9] | Old version, still maintained: 4.6 | Released[10] withVisual Studio 2015[11] andEF 7 Previews forWindows Server 2016 andWindows 10 |
|
| November 30, 2015[9] | Old version, still maintained: 4.6.1 | ||
| August 2, 2016[9] | Old version, still maintained: 4.6.2 |
| |
| April 11, 2017[9] | Old version, still maintained: 4.7 | Included in the Windows 10 Creators Update[12] |
|
| October 17, 2017[9] | Old version, still maintained: 4.7.1 | Included in the Windows 10 Fall Creators Update.[13] |
|
| April 30, 2018[9] | Old version, still maintained: 4.7.2 | ||
| August 09, 2022[9] | Latest version:4.8.1 | Released[14] | |
| November 18, 2015 | Old version, not maintained: 5 RC1 | This version was later separated from ASP.NET and brought into a new project calledASP.NET Core, whose versioning started at 1.0.[15] | An entirely new project with different development tenets and goals |
Legend: Old version, not maintained Old version, still maintained Latest version Latest preview version Future version | |||
TheMono Project supports "everything in .NET 4.7 exceptWPF,WWF, and with limitedWCF and limited ASP.NET 4.7 async stack."[16] ASP.NET can be run with Mono using one of three options:Apache hosting using themod_mono module,FastCGI hosting, andXSP.
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