Difference between ASP and ASP.Net

In order to draw the line of difference between ASP and ASP.Net, let us at first define the two separately. Ideally speaking, that is the best way to start discussing the difference between the two.

ASP.Net can be defined as an open source web application framework, meant for the server-side functioning that is specifically designed for development or designing of web pages that are dynamic in nature. It is also used for the development of various kinds of web applications as well as web based services.

On the other hand, ASP or ‘Active Server Pages’ is a service side engine that was designed as well as developed for web pages that are dynamically generated.

Alternately, the fundamental difference between the two is that while Dot Net (DN) is basically compiled, ‘Active Server Pages’ is only interpreted. This signifies that as ‘Active Server Pages’ uses VBScript it gets interpreted whenever an ASP page is executed. Whereas, DN mainly uses .NET scripts or languages like C#, VB.NET etc., which are then compiled into MSIL or MS Intermediate Language.

However, that is not all – there are a lot of differences between the two.

Process Isolation

ASP operates under IIS or inetinfo.exe process space. Hence, the framework is quite vulnerable and prone to application clashes whenever IIS is either stopped or restarted.

DN, in the contrary is a distinctive worker process that is absolutely separate from the inetinfo.exe of the IIS process. In this framework, the process model does not have any relation or connection whatsoever with the IIS process isolation getup or settings.

Compilation versus Interpretation

Whenever a conventional ASP page is sought for by the users, the text of that particular page parses in a linear mode or fashion. All the content that are not server-side script is at first run through an appropriate interpreter like VBScript or Jscript. Its output is subsequently delivered back to response.

DN pages in contrast, are always compiled into the .NET classes that are embedded within the assemblies. This particular class includes all server-side codes along with static HTML. Therefore, whenever someone accesses the page for the first time, all the subsequent rendering of that particular page is taken care of by the corresponding executing code that is compiled. This helps to compensate all the limitations and inefficiencies of conventional ASP scripting.

Performance Implications

Active Server Page scripts are generally interpreted on fly and hence there is always performance related impact. When it comes to common optimization of the ASP applications, it involves an inclination of server-side scripts towards the COM components that are precompiled, with a view to improve the response times.

As virtually each and every component of ASP.Net is assembly, intermingling or effective combination of the blocks of service-side evaluation with the static HTML is less effective or efficient, when compared with a single script block of server-side. Hence, in order to avert this, a number of ‘Active Server Pages’ developers these days prefer working with larger server-side script blocks and replacing the elements of static HTML with the Response.Write() invocations. Whereas, when it comes to Dot Net, these steps are not generally needed to improve the quality of performance.

Debugging

‘Active Server Pages’ generally deals with scripts that are interpreted, and hence this makes the practice of debugging pretty difficult. However, with ASP.Net, the tools that are available to the developers of .Net are also applicable for the .aspx developers.

Whatever errors come up in those pages, they appear as compiler errors, and in all probability these errors will come up during the time of compilation, rather than during the run time. This is mainly because both C# as well as VB.Net is strongly typed scripts or languages.

Hence, it can well be said that there is a marked difference between ASP.Net and ASP and this is the reason, developers are mainly tilting towards the former.

This is a pretty pertinent issue and there is quite segregation amongst the rank of the developers when it comes to choosing between these two frameworks. Still due to more user-friendliness, developers are choosing Dot Net more than the other one.

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Created on Dec 31st 1969 18:00. Viewed 0 times.

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