PostBack Concept

[Matthew Louden]

I want to know if the PostBack concept applies to HTML web-based forms,
regardless of what programming technologies we use: For example, ASP,
ASP.NET, Java, CGI, etc...

PostBack means to send the HTML form to the web server? Since most of the
time I heard this term in ASP.NET circle, thats why I raise this question.

Please advise. Thanks!

[TomB]

In ASP.Net the whole idea is to treat a form like you would a windows form.
That is, the same page handles all of the events. Thus, in ASP.Net the
forms are set to POST to themselves and a built in property is available
called PostBack.

Before .Net I never even considered using a postback. All of my forms would
consist of Form1 where the user enters the information, then Page2 where the
information was processed and the user was given a response.

Since .Net I've realized the advantages of that approach and most of my
forms postback to the same page.

So is it a .Net only thing. Not at all. As long as the form's Action
property is set to the same page, it's what I'd call a postback. Most of my
forms look like this......

<%
if request.form("postback")="true" then
'note that true is in quotes because it's a string not a boolean
Call processTheForm
end if
%>

<form method=post action="thisSamePage.asp">
<input type=hidden name=postback value="true">
etc...
</form>

"Matthew Louden" <mattloude@hotmail.com> wrote in message
news:%23H1k5OBwDHA.2444@TK2MSFTNGP12.phx.gbl...

> I want to know if the PostBack concept applies to HTML web-based forms,
> regardless of what programming technologies we use: For example, ASP,
> ASP.NET, Java, CGI, etc...
>
> PostBack means to send the HTML form to the web server? Since most of the
> time I heard this term in ASP.NET circle, thats why I raise this question.
>
> Please advise. Thanks!
>
>

[David Morgan]

Yes, I too have been doing this for years as if the user supplies an invalid
value you don't need to redirect as you can remember all the fields values.

<input type="text" name="Email"
value="<%=Server.HTMLEncode(Request.Form("Email")) %>">


"TomB" <shuckle@hotmailXXX.com> wrote in message
news:uSrTUbBwDHA.2368@TK2MSFTNGP09.phx.gbl...

> In ASP.Net the whole idea is to treat a form like you would a windows

form.

> That is, the same page handles all of the events. Thus, in ASP.Net the
> forms are set to POST to themselves and a built in property is available
> called PostBack.
>
> Before .Net I never even considered using a postback. All of my forms

would

> consist of Form1 where the user enters the information, then Page2 where

the

> information was processed and the user was given a response.
>
> Since .Net I've realized the advantages of that approach and most of my
> forms postback to the same page.
>
> So is it a .Net only thing. Not at all. As long as the form's Action
> property is set to the same page, it's what I'd call a postback. Most of

my

> forms look like this......
>
> <%
> if request.form("postback")="true" then
> 'note that true is in quotes because it's a string not a

boolean

> Call processTheForm
> end if
> %>
>
> <form method=post action="thisSamePage.asp">
> <input type=hidden name=postback value="true">
> etc...
> </form>
>
> "Matthew Louden" <mattloude@hotmail.com> wrote in message
> news:%23H1k5OBwDHA.2444@TK2MSFTNGP12.phx.gbl...

> > I want to know if the PostBack concept applies to HTML web-based forms,
> > regardless of what programming technologies we use: For example, ASP,
> > ASP.NET, Java, CGI, etc...
> >
> > PostBack means to send the HTML form to the web server? Since most of

the

> > time I heard this term in ASP.NET circle, thats why I raise this

question.

> >
> > Please advise. Thanks!
> >
> >

>
>