Re: GridView RowEditing Requery question

Thanks -- using local cahced dataset sounds like it will be the way to go
for me. My datasets can get large (5-15MB) -- do you think that is OK to put
in the cache or too big?
Thank you!

"Steven Cheng[MSFT]" <stcheng@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:nBDUrq7WHHA.2352@xxxxxxxxxxxxxxxxxxxxxxxxx
Hello Matt,

Regarding on the Row Index issue in GridView databinding/updating you
mentioned, I think it is a common case if the DataSource you used to bind
Gridview is always retrieved from database directly(is this your case)?

Actually, for ASP.NET web page, due to the http protocol's stateless
nature, when a page first display to client with databound data, and after
the user submit page to do editing/updating, there may exists some certain
timespan, and there certainly may have occured changed in the backend
database, if it is a frequently updating database.

Therefore, for your scenario, if your backend database may frequently be
changed due to the front application's concurrent access(multi-users
environment),I suggest you consider the following approach:

** Implement local cache in your ASP.NET application(for the data access
component). Whenever you pull some resultset from database, you cached it
in server momey(such as using the ASP.NET application cache) so that
before
the cache become invalid, the calling side always get the cached
resultset.

** For your GridView(or any other front databound controls), instead of
directly query backend database, you use the local cached dataset (during
the lifecycle of the cached resultset). This can confirm the consistency
of
the datasource be bound to GridView(between multiple databinding or page
requests roundtrip).

How do you think?

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



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