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Dated: Oct. 02, 2005

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Active Server Pages
By Najmi

ASP.NET pages have several semantic changes from existing ASP pages. The following issues are the ones most likely to affect you:

  • ASP.NET pages only support one language on a single page.

    ASP allowed multiple languages to be used on a single page, which was useful for script library scenarios. Because of ASP Net's compiled nature, it supports only a single language on a page. However, it is still possible to have multiple pages, each with a separate language, within a single application. User Controls might also have a different language from the page that contains them. This enables you to integrate functionality written in different languages in a single page. This is an adequate substitute for the multiple-language Include files that are prevalent in traditional ASP applications.

  • ASP.NET page functions must be declared in <script runat=server> blocks.

    In ASP, page functions could be declared within <% %> blocks:

    <%
    Sub DoSomething()
    Response.Write "Hello World!"
    End Sub

    DoSomething
    %>

    In ASP.NET, page functions must be declared in <script runat=server> blocks:

    lt;script language="VB" runat=server>

    Sub DoSomething()
    Response.Write ("Hello World!")
    End Sub

    </script>

    <%
    DoSomething()
    %>

  • ASP.NET does not support page-render functions.

    In ASP, page-render functions could be declared with <% %> blocks:

    <% Sub RenderSomething() %>
    <font color="red"> Here is the time: <%=Now %> </font>
    <% End Sub %>

    <%
    RenderSomething
    RenderSomething
    %>

    In ASP.NET, this must be rewritten:

    <script language="VB" runat=server>

    Sub RenderSomething()
    Response.Write("<font color=red> ")
    Response.Write("Here is the time: " & Now)
    End Sub

    </script>

    Summary

  • With three exceptions, ASP.NET is 100% API-compatible with traditional ASP. The API changes are that, now, Request(), Request.QueryString(), and Request.Form() all return individual strings, rather than string arrays.
  • ASP.NET pages support only a single language.
  • ASP.NET page functions must be declared in <script runat=server> blocks.
  • Page-render functions are not supported.

    Now that you've gotten free know-how on this topic, try to grow your skills even faster with online video training. Then finally, put these skills to the test and make a name for yourself by offering these skills to others by becoming a freelancer. There are literally 2000+ new projects that are posted every single freakin' day, no lie!


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    Rain's Comment
    Great article, thank you again for wriintg.
    30 Sat Jul 2011
    Admin's Reply:

     any time rain you are most welcome. feel free to comment on our effort.


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