Server.Transfer

[Drew]

I have a server.transfer question. I have a page that
utilizes the server.transfer method. On the page that is
transfered to - lets say page 2, I want to do another
server.transfer . This gives me the error:
System.InvalidC astException: Specified cast is not valid.

What is the proper way to do this type of page
navigation? Thanks - Drew

[Ignacio Machin \( .NET/ C# MVP \)]

Re: Server.Transfer

Hi Drew,

I just did a test with 3 pages : webform1.aspx -- > webform2.aspx --<
webform3.aspx

where in the Page_Load of both webform1.aspx and webform2.aspx I do a
Server.Transfer and it worked fine, could you post part of the code where
the exception is risen,

Cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"Drew" <anonymous@disc ussions.microso ft.com> wrote in message
news:02ed01c3aa 1e$81d69390$a30 1280a@phx.gbl.. .[color=blue]
> I have a server.transfer question. I have a page that
> utilizes the server.transfer method. On the page that is
> transfered to - lets say page 2, I want to do another
> server.transfer . This gives me the error:
> System.InvalidC astException: Specified cast is not valid.
>
> What is the proper way to do this type of page
> navigation? Thanks - Drew[/color]

[Richard K Bethell]

Re: Server.Transfer

"Drew" <anonymous@disc ussions.microso ft.com> wrote in message
news:02ed01c3aa 1e$81d69390$a30 1280a@phx.gbl.. .[color=blue]
> I have a server.transfer question. I have a page that
> utilizes the server.transfer method. On the page that is
> transfered to - lets say page 2, I want to do another
> server.transfer . This gives me the error:
> System.InvalidC astException: Specified cast is not valid.[/color]

It doesn't sound like a Server.Transfer problem so much as a type conversion
issue. By the way, I can conceive of no well-designed scenario where you
would actually want to do this. Server.Transfer should not be used to break
up code or control program flow - a terribly expensive way to do things. If
you need less code in your classes, then you should either use regions, or
abstract some of the code out to other classes.

R/

[Drew]

Re: Server.Transfer

I am away from my home computer - I'll post the code
shortly.

But you can do server.transfer to go to multiple pages?

p1 -> -> p2 -> -> p3 -> -> p4

doing a server.transfer on each one.

Is that the proper practice for navigating web pages in c#?

Thanks.[color=blue]
>-----Original Message-----
>"Drew" <anonymous@disc ussions.microso ft.com> wrote in[/color]
message[color=blue]
>news:02ed01c3a a1e$81d69390$a3 01280a@phx.gbl. ..[color=green]
>> I have a server.transfer question. I have a page that
>> utilizes the server.transfer method. On the page that[/color][/color]
is[color=blue][color=green]
>> transfered to - lets say page 2, I want to do another
>> server.transfer . This gives me the error:
>> System.InvalidC astException: Specified cast is not[/color][/color]
valid.[color=blue]
>
>It doesn't sound like a Server.Transfer problem so much[/color]
as a type conversion[color=blue]
>issue. By the way, I can conceive of no well-designed[/color]
scenario where you[color=blue]
>would actually want to do this. Server.Transfer should[/color]
not be used to break[color=blue]
>up code or control program flow - a terribly expensive[/color]
way to do things. If[color=blue]
>you need less code in your classes, then you should[/color]
either use regions, or[color=blue]
>abstract some of the code out to other classes.
>
>R/
>
>
>.
>[/color]

[Ignacio Machin \( .NET/ C# MVP \)]

Re: Server.Transfer

Hi Drew ,[color=blue]
>
> But you can do server.transfer to go to multiple pages?
>
> p1 -> -> p2 -> -> p3 -> -> p4
>
> doing a server.transfer on each one.[/color]

Yes, you can, I did that yesterday testing your problem
[color=blue]
> Is that the proper practice for navigating web pages in c#?[/color]

No, it's not, What are you trying to do?

cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation