Generate a unique ID for each page of my application

[=?Utf-8?B?QWxwaGFwYWdl?=]

Hello,

I want to generate a unique ID for each page of my Asp.Net application.
My first step is to generate a new Guid when the page is loaded for the
first time and registers, stores this new Guid in a Dictionary which is saved
in the ApplicationState, then I add a hidden field to the page __PageID, so
I can get this unique ID on other Postbacks. No problem.

The problem is about hackers. They can modify my hidden field to another Guid.
What other parameters can I add to have a perfect unique ID per page ?
(I was thinking about computer info or IP address)

Thanks in advance for your help.

[=?Utf-8?B?UGV0ZXIgQnJvbWJlcmcgW0MjIE1WUF0=?=]

How about, perhaps, the HashCode of the Page?
--Peter
Site: http://www.eggheadcafe.com
UnBlog: http://petesbloggerama.blogspot.com
Short Urls & more: http://ittyurl.net
"Alphapage" wrote:

Hello,

I want to generate a unique ID for each page of my Asp.Net application.
My first step is to generate a new Guid when the page is loaded for the
first time and registers, stores this new Guid in a Dictionary which is saved
in the ApplicationState, then I add a hidden field to the page __PageID, so
I can get this unique ID on other Postbacks. No problem.

The problem is about hackers. They can modify my hidden field to another Guid.
What other parameters can I add to have a perfect unique ID per page ?
(I was thinking about computer info or IP address)

Thanks in advance for your help.

[=?Utf-8?B?YnJ1Y2UgYmFya2Vy?=]

store the guid in viewstate as this is encrypted and validated.

-- bruce (sqlwork.com)
"Alphapage" wrote:

Hello,

I want to generate a unique ID for each page of my Asp.Net application.
My first step is to generate a new Guid when the page is loaded for the
first time and registers, stores this new Guid in a Dictionary which is saved
in the ApplicationState, then I add a hidden field to the page __PageID, so
I can get this unique ID on other Postbacks. No problem.

The problem is about hackers. They can modify my hidden field to another Guid.
What other parameters can I add to have a perfect unique ID per page ?
(I was thinking about computer info or IP address)

Thanks in advance for your help.

[clintonG]

All 10,000 pages? ;-)

"bruce barker" <br*********@discussions.microsoft.comwrote in message
news:9F**********************************@microsof t.com...

store the guid in viewstate as this is encrypted and validated.

-- bruce (sqlwork.com)
"Alphapage" wrote:

>Hello,

I want to generate a unique ID for each page of my Asp.Net application.
My first step is to generate a new Guid when the page is loaded for the
first time and registers, stores this new Guid in a Dictionary which is
saved
in the ApplicationState, then I add a hidden field to the page __PageID,
so
I can get this unique ID on other Postbacks. No problem.

The problem is about hackers. They can modify my hidden field to another
Guid.
What other parameters can I add to have a perfect unique ID per page ?
(I was thinking about computer info or IP address)

Thanks in advance for your help.

[Michael Nemtsev [MVP]]

Hello Alphapage,

I'd rely on hashcode. Just render your page into string and get hashcode
from this string, and your can even encode it

---
WBR,
Michael Nemtsev [.NET/C# MVP] :: blog: http://spaces.live.com/laflour

"The greatest danger for most of us is not that our aim is too high and we
miss it, but that it is too low and we reach it" (c) Michelangelo
AHello,
A>
AI want to generate a unique ID for each page of my Asp.Net
Aapplication.
AMy first step is to generate a new Guid when the page is loaded for
Athe
Afirst time and registers, stores this new Guid in a Dictionary which
Ais saved
Ain the ApplicationState, then I add a hidden field to the page
A__PageID, so
AI can get this unique ID on other Postbacks. No problem.
AThe problem is about hackers. They can modify my hidden field to
Aanother Guid.
AWhat other parameters can I add to have a perfect unique ID per page
A?
A(I was thinking about computer info or IP address)
AThanks in advance for your help.
A>

[Patrice]

So what ? We don't know what you are using those IDs for ? So I have no idea
what would be the consequence if a hacker was changing this value. You can
always check server side against your dictionary to find out changed values.

Your best bet is likely to start by telling us what is the overall goal for
those unique ids...

--
Patrice

"Alphapage" <Al*******@discussions.microsoft.coma écrit dans le message de
news: A4**********************************@microsoft.com...

Hello,

I want to generate a unique ID for each page of my Asp.Net application.
My first step is to generate a new Guid when the page is loaded for the
first time and registers, stores this new Guid in a Dictionary which is
saved
in the ApplicationState, then I add a hidden field to the page __PageID,
so
I can get this unique ID on other Postbacks. No problem.

The problem is about hackers. They can modify my hidden field to another
Guid.
What other parameters can I add to have a perfect unique ID per page ?
(I was thinking about computer info or IP address)

Thanks in advance for your help.

[=?Utf-8?B?QWxwaGFwYWdl?=]

Thank you everyone,

I will build a custom Id with the hashcode. Great idea.

Regards.