Devexpress Server Mode

[DonaldShimoda]

Any chance to get working Srever Mode with DataAbstract?

Best regards.

[EvgenyK (Evgeny Karpov)]

Hi,

What do you mean under server mode?
as for me, this video demonstrates feature of client-side grid only

Note: I don’t track changes in DevExpress product and I’m not expert in their products.

[estebanp]

They implemented some sort of automatic row fetching depending on what is being displayed on screen. That being said, is there a way to fetch just n=50 amount of records from a TDAMemDataTable and then the next n records from that point?

[EvgenyK (Evgeny Karpov)]

see our old DA4 example: Fetch.zip (44.4 KB):

This demo shows how to fetch paged orders and also master/detail via single server call.

when the master dataset ("Orders") is opened, the first 40 records are fetched from the server (assuming that you haven’t modified the Max Records Per Fetch setting). Try clicking on the vertical scroll bar. Initially, you will be displaying the other records fetched when the dataset was opened. Once you have reached record 40, another batch of records are then fetched from the server and you can see when this happens because the scroll bar thumb reduces size.
OrderDetail records are only fetched as required.

it wasn’t ported to DA9 so some manual updating might be required.

[DonaldShimoda]

@EvgenyK, the advantage is having compatibility INSIDE the quantumgrids allowing to the user navigate and be transparent. No need to external methods. They have methods connecting to another dataset components.
What d you think?

Best regards.

[EvgenyK (Evgeny Karpov)]

we have no internal functionality in TDADataTable that allows to automatically load records on demand
only if you implement it manually, like in that sample