Hello James,
thank you for your answer.
But I believe, you really didn't understand my problem:
I don't want to convert the ADO-Datatable to an ESRI-Table, I thought there is a possiblity to use the Datatable directly thru QueryInterface.
If the user changes the location (xcoord, ycoord) in the DBMS-Table, each time a conversion is required to reflect the changes in the XY-Event-Layer - and this takes a lot of time .
But if there is no other solution, then I have to take the conversion.