Where to store a dataset (confused of cache, session, viewstate)?

Hey created a .xsd (strongly typed) dataset.
User inserts to this ds info he likes -
lets say its an order entry form - so each user should see their data and only when they are in that page.

Currently i stored this dataset in CACHE object.
But is that the correct place to store it
(I think "OLD" Session Object would be too slow, but VIEWSTATE ?)

Suggestions and thoughts appreciated!
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MargusLehisteAsked:
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AerosSagaCommented:
You can store the dataset in Session:

From Page1:

Session("PassedDS") = ds


From Page2:

Dim ds As DataSet = Session("PassedDS")

Aeros
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mmarinovCommented:
Hi MargusLehiste,

i think viewstate is a better choice if you want the dataset to be accessible only within this page, but take a look at these articles for state management:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcon/html/vbconchoosingserverstateoption.asp
http://msdn.microsoft.com/library/en-us/vbcon/html/vbtskRetainingWebFormsPageValuesWithViewStateProperty.asp

Regards!
B..M
mmarinov
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MargusLehisteAuthor Commented:
MMarinov - thank you for your reply,

so do you think that in my case I should replace Cache with viewstate ?

AerosSaga - as I understand Application and Session variables put unnecessary overhead to server.
In my case - you are correct the dataset must be private for each user - however - I do not require access to this dataset from another page.
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mmarinovCommented:
MargusLehiste,

Yes i think so, because the viestate is on the client ( e.g. accessible only for the user and not overhead the server ) and it is active only for the current page

B..M
mmarinov
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khareatulCommented:
Atul:

Hi

you should store the Dataset in Session .but not in Cache because cache make a single copy of cache variable on the server,If unfortunatily two users access the page at the
same time then may be one can view the data entered by other because there will be only one cache variable on the server,and this cache object will be sharable.

If still you want to use Cache Object then make the cache object Unique by adding the SessionId like:

Cache["VariableName"+Session.SessionID] = AnyValue;


Because you also want that the dataset must be private for each user so you should only use the Session.

Regards
Atul Khare
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madhukarthaCommented:
Hi ,

I also have a similar issue.In my case the dataset is bound to a grid with heavy data.
I have felt using Viewstate has made the page slow.Any suggestions please?

Thanks
Madhu
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MargusLehisteAuthor Commented:
Madhu - I think cache is the best way to go.
Viewstate puts a heavy load on client, Session and Application objects are OLD - and therefore not very efficient.
Ive been using Cache["VariableName"+Session.SessionID] and its been pretty OK.
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