Hi,
In VB6 I used a method requery to repopulate a recordset. I don't find
an equivalent for the .NET dataset.
I don't update my datasets at all, but I use them to navigate through
subsets of my tables, saying my dataset contains primary keys, ordered
in a specific way. When I go the next, previous, first or last record
in the dataset I execute a select stored procedure. When I do an
insert, delete or update I call a stored procedure, implying I should do
a requery of the dataset (subset) because a row might be deleted or
inserted in the database, while it's not reflected in the disconnected
dataset.
Of course I can execute the query to create the dataset again, after
each insert/delete. I wondered there might be a method dataset.requery
or a workaround to achieve this easily??
Thanks a lot,
Kind regards,
Perre Van Wilrijk. 2 3620
I would requery as normal, and merge the result into the original dataset.
If you use a date modified column in your data, you could query where last
modified is greater than the date that you last polled for changes.
"Peter Van Wilrijk" <pr*@koopjeskra nt.be> wrote in message
news:A_******** **************@ phobos.telenet-ops.be... Hi,
In VB6 I used a method requery to repopulate a recordset. I don't find an equivalent for the .NET dataset.
I don't update my datasets at all, but I use them to navigate through subsets of my tables, saying my dataset contains primary keys, ordered in a specific way. When I go the next, previous, first or last record in the dataset I execute a select stored procedure. When I do an insert, delete or update I call a stored procedure, implying I should do a requery of the dataset (subset) because a row might be deleted or inserted in the database, while it's not reflected in the disconnected dataset.
Of course I can execute the query to create the dataset again, after each insert/delete. I wondered there might be a method dataset.requery or a workaround to achieve this easily??
Thanks a lot, Kind regards, Perre Van Wilrijk.
Thanks AMDRIT,
Do you have a link to an example?
I deduct merging 2 datasets (with the same structure) is easily done ...
as using a "union" in SQL?
Can't I get a problem with this workaround if a row was physically
deleted, the row will stay in the dataset I guess ... but there I see
now I always have to check that since another user might have deleted
the row that I have in my susbset of primary keys.
However, I wondered whether the dataset stores the query it was
originally build on. This way I don't have to store that query (and
it's values in the where clause) myself. Actually that's what I meant
to ask, but I didn't make myself very clear. Sorry, no native English
and just switching from VB6 to VB.NET.
Kind regards,
Perre Van Wilrijk.
AMDRIT wrote: I would requery as normal, and merge the result into the original dataset. If you use a date modified column in your data, you could query where last modified is greater than the date that you last polled for changes.
"Peter Van Wilrijk" <pr*@koopjeskra nt.be> wrote in message news:A_******** **************@ phobos.telenet-ops.be...
Hi,
In VB6 I used a method requery to repopulate a recordset. I don't find an equivalent for the .NET dataset.
I don't update my datasets at all, but I use them to navigate through subsets of my tables, saying my dataset contains primary keys, ordered in a specific way. When I go the next, previous, first or last record in the dataset I execute a select stored procedure. When I do an insert, delete or update I call a stored procedure, implying I should do a requery of the dataset (subset) because a row might be deleted or inserted in the database, while it's not reflected in the disconnected dataset.
Of course I can execute the query to create the dataset again, after each insert/delete. I wondered there might be a method dataset.requery or a workaround to achieve this easily??
Thanks a lot, Kind regards, Perre Van Wilrijk. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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