Re: How to call a Sub function from .ASPX file ?

Kevin,

Last time I put all the files in my application (project name) using Visual
Studio.NET, declared a class (AClass) which has some functions, and saved
them in a file (.vb file). My program worked fine when I called the function
from my other .vb files (AClass.Function1, ...). My application was
Object-Oriented well development. Now, I'd like to try another way :
creating .ASPX file that contains VB.NET script, HTML and call one function
from another .vb file without using Visual Studio.NET. Can I do that and How
? It's my question.




"Kevin Spencer" <kevin@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:u7oOtbdnFHA.2472@xxxxxxxxxxxxxxxxxxxxxxx
> You're not thinking fourth-dimensionally! (- Back to the Future)
>
> Actually, you're not thinking Object-Orientationally.
>
> ASP.Net is object-oriented, and you'd better get acquainted with it, or
> you'll be visiting here almost daily, and writing crappy code until you
do.
> Let me elaborate, if you will:
>
> Files are source code. Your application doesn't have files. It has
classes.
> A file defines a class, but IS not a class. A class is a data type, and
> exists in the context of a running application. So, when you're talking
> about how your application works, the first thing you need to do is think
> about classes, not files. A file can contain one or MORE class
definitions,
> and you need to get acquainted with classes to be successful with .Net.
>
> Classes are very important in .Net programming; Objects are made from
> classes, and classes provide encapsulation. Object-oriented programming
can
> get pretty darned complex, and encapsulation can save you a lot of grief,
by
> hiding those things which need hiding from those things that don't need
> them.
>
> If you have a file with a bunch of Subs and Functions in it, you need to
> create a class with Subs and Functions in it. These Subs and Functions can
> be Shared (meaning that they are singleton objects that don't require a
> class instance to operate), or they can be Instance (meaning that an
> instance of the class containing them must be created in order to use
them).
> The advantage to Shared data and process is that it doesn't require a
class
> instance, and is, in essence "global," available to the entire
application.
> This is also the disadvantage of Shared data and process. Anything can get
> to it, and change it, and in a multi-threaded app (unlike VB 6, .net is
> multi-threaded), this can cause all sorts of problems. Unless you're
> familiar with the issues, I would stick with classes that require
> instantiation. Instantiation is the process of creating a copy (instance)
of
> a class that is limited in its scope (availability), and is thread-safe.
>
> Once you create an instance of a class, you can access any Public or
Friend
> (Friend is more protected than Public, but you shouldn't run into issues
> right away) members from any other class that references the instance.
>
> From your question, and the code you posted, I can see that you require a
> good bit more education and practice. I would recommend the .Net SDK, a
free
> download from:
>
>
http://www.microsoft.com/downloads/details.aspx?FamilyId=9B3A2CA6-3647-4070-9F41-A333C6B9181D&displaylang=en
>
> It is extremely important to know the difference between ASP and ASP.Net,
> between VBScript or VB 6, and VB.Net. The first are procedural,
> single-threaded, and easy to use for small applications. .Net is
> object-oriented, multi-threaded, and easy to use once you spend a great
deal
> of time studying it, but incredibly hard to use if you don't.
>
> --
> HTH,
>
> Kevin Spencer
> Microsoft MVP
> .Net Developer
> Everybody picks their nose,
> But some people are better at hiding it.
>
> "bienwell" <bienwell@xxxxxxxxxxx> wrote in message
> news:O7QlcGdnFHA.1480@xxxxxxxxxxxxxxxxxxxxxxx
> > Hi,
> >
> > I have a question about file included in ASP.NET. I have a file that
> > includes all the Sub functions (e.g FileFunct.vb). One of the
functions
> > in this file is :
> >
> > Sub TestFunct(ByVal strInput As String)
> > return (strInput & " test")
> > End Sub
> >
> >
> > I'd like to call this function in FileFunct.vb from another .ASPX file
> > like this :
> >
> > <%@ import Namespace="System" %>
> > <%@ import Namespace="System.Data" %>
> >
> > <html>
> > <head>
> > <title>Test page</title>
> > </head>
> >
> > <body>
> > <script runat="server" language="VB" scr="FileFunct.vb" >
> >
> > Sub Page_Load(s As Object, e As EventArgs)
> > Dim result=TestFunct("This is a string")
> > response.write("<BR>result ==> " & result)
> > End Sub
> > </script>
> > </body>
> > </html>
> >
> > I've got this error:
> >
> > Server Error in '/' Application.
>
> --------------------------------------------------------------------------
--
> > ----
> >
> > Compilation Error
> > Description: An error occurred during the compilation of a resource
> > required
> > to service this request. Please review the following specific error
> > details
> > and modify your source code appropriately.
> >
> > Compiler Error Message: BC30451: Name 'TestFunct' is not declared.
> >
> > Source Error:
> >
> >
> > Line 18: Sub Page_Load(s As Object, e As EventArgs)
> > Line 19:
> > Line 20: Dim result=TestFunct("This is a string")
> > Line 21: response.write("<BR>Result ==> " & Result)
> > Line 22:
> >
> >
> > I have a single .ASPX file and I don't use Visual studio. NET in this
> > case.
> > Can I do that ?
> >
> > Thanks in advance.
> >
> >
>
>


.

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