A Customer table has customer information.
A Group table has a group information.
A group can have multiple customers.
A customer can have multiple groups.
So I created a table which links both of them.
In this table I am storing Customers and GroupCID and there is No Primary Key (PK is linkcustomerCID+linkGroupCID) because many records will be deleted and added and not updated.
On the customer form I have provided a Grid with GroupTextbox which shows all the groups and a checkbox where user can select/deselect group by clicking the checkbox. I can not change this interface because client wants this way.
Same logic is for Group Form.
(1) How do I refresh this grid so that correct values of checkboxes appear, I mean ticked where there is a groupCID in linkCustomerGroup Table or blank when there is no GroupCID of GroupTextBox (grouptextbox shows only groupname and not groupcid, this is also the problem.
(2) When User selects/deselects more than one group I will have to either add multiple records or delete multiple records
(3)Will it be possible to create a single view which will show all the groups and update the Linktable. I tried it with OUTERJOIN View (All records from GroupTable +records from linktable which has a matching CID) but whenever I replace .NULL. value with actual Valid Value VFP pops up error message UPDATE Conflict.
(4) what will be the coding part on the grid or save method.

Sanjay Chavda
sanjay@telebot.net
Any Help