What about calling a web service from the aspx page, the client script would
be responsible for populating any fields etc, but it would mean you're not
posting back all the time.
You can also lessen the amount of data being sent to the page by storing the
viewstate in your DB.
"dang57" <dan.greitzer@xxxxxx> wrote in message
news:d58227f1-ec20-47b0-b250-c3e08ee06443@xxxxxx
Quote:
>I had written a vb.net app for clients that wanted to use a datagrid
> like a spreadsheet. Rather than edit one line at a time, they wanted
> all lines available at all times. That seemed to work fine, except
> now there is a response-time issue when there are many lines in the
> grid. The viewstate is getting very large.
>
> There are close to 50 input fields on each row, and some folks are
> adding upwards of 50 rows or more. The real issue is that as values
> are entered in a few specific columns, I need the app to jump back
> over to the server, validate the input, and possibly pre-fill a few
> other values in that row. As the grid gets larger, changing a value
> and making a round trip to the server can take 15-20 seconds. And
> validation must take place on the server, because I have to hit the
> database. I would have preferred to bury the validation tables in the
> screen, but they're way too large.
>
> I'm using Anthem keep from having to refresh the entire screen all the
> time, and that helps keep the screen from jumping around. But what I
> really need is a way to send to the server only a few fields rather
> than the entire viewstate. It has to be flexible, though. When I'm
> validating those specific fields, I want only those fields sent to the
> server. But if they click the Save button, all of it needs to go.
>
> I've made some tests using Anthem.InvokePageMethod and
> Anthem.InvokeControlMethod, but they still run slow. They seem to
> call the routine I want, but that's after the entire viewstate is sent
> in. I've tried EnableCallBack on Anthem fields, but it seems like
> that's something that needs to be defined before the screen is
> painted. Since I don't know if they're going to enter a value or
> click Save, I don't know which fields to set up for EnableCallBack.
> If I do that for the entire grid, they all get returned, and I haven't
> gained anything.
>
> I've considered setting up another class to receive a message, but
> that would have to open another window, wouldn't it?
>
> What I really want is a way to send a few fields to the server, which
> in response, will set a few other fields within the grid. Seems to me
> that there must be a way to do that, but after two days of searching,
> I've yet to find it. I need a clue.
>
> Thanks for any suggestions.
> Dan