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True DBGrid 7 + Multiuser + Refresh Data

Posted on 2003-10-23
Last Modified: 2013-12-25
I have a problem with True DBGrid 7 (and also with the 8 evalution version) :
When more then one user use the grid (wich is linked to an Access DB with a
"Data" control) to add data, there are some refresh problems.
The "AddNew" row below the last data row in the grid has information that has
been entered from another user on a different PC.
Is there a way to solve the problem ?
Question by:PROMISYS
LVL 143

Accepted Solution

Guy Hengel [angelIII / a3] earned 134 total points
ID: 9605031
To be honest, i NEVER use grids to let the user change data (add, delete, update), because of such problems as you describe. I only use them to display the data, and if the user wants to add or update a record, he get's a child form for that. For deleting rows, I also don't use the grid's recordset directly, but run the update directly to the database (and then refresh the grid).
In order to be efficient, I avoid having to display more than 100 rows at a time, either by limiting the output somehow, using filters etc...


Assisted Solution

MYLim earned 133 total points
ID: 9605122
I never try "True DBGrid 7" before,but as i know datagrid is hard to control user data entry.
too many problem when using Grid and better switch to ADO coding when your program
have more than one user.

Assisted Solution

JohnChapin earned 133 total points
ID: 9606438
The whole point of a connected Datagrid with a dynamic recordset is to allow updates by other users to be shown in the display.
If you want to exclude those changes, then use a recordset with adOpenKeyset or adOpenStatic recordset types.
 adOpenKeyset is a server side set of bookmarks into the database cursor.
 adOpenStatic can be a client side snapshot of the database cursor.
Need More. Let me know.

Expert Comment

ID: 10390599
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:

- Points split between angelIII, MYLim and JohnChapin

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