"Cannot initialize streamer that is already in use"

Data Abstract
1

In my Delphi application I got some tabs. Only one tab gives sometimes an error “Cannot initialize streamer that is already in use”. On tab change I open the datatable
is there a way to detect the source of this error?
This is the only tab in my application that doesn’t use a master detail relation
It happens with big and small datasets.

2

Thanks, logged support request as bugs://47601
Posted by Bugs for Mac

3

This exception says that streamer already reads/writes a datatable.
You might receive this error if you called event handler of other datatable when it’s filling with data.

4

That’s what I thought, but as far as I know I don’t call the eventhandler or databasetable when it happens

5

This can happens implicitly, you can use OnInitialized event handle of data streamer to log streamer initialization and find out why streamer is initialized twice.

6

I tried that. I get in the onInitialized event everytime I open a table once during debuging. But of course it only happens when I am not debuging. The strange thing is it only happens with one table sometimes. This table has no details tables. Other tables with details table have no problems.

7

Hello,
You can use other TMemDataTable events: AfterEdit, AfterFieldChange, AfterPost

8

Some more digging revealed that somehow the OnMasterChange was called by TMasterDataLink.
I use devexpress and I made a repository item that connected to table B which wasn’t open and had details table with the same logical name astable A I tried to open and when I opened table A thr details table from table B was opend simultaniously