Using the MulticastGroup in MCast control

When using the Multicast control we expect that using MulticastGroup property will cumulatively add to existing groups -- indeed, the help file says that the only way to leave a group is by unloading the control. Nevertheless in our program the only group listened to is the Last one entered.

Date Entered: 10/31/1997    Last Updated: 07/25/2000

You are most likely adding the groups *BEFORE* the control is set to Active. You must add the groups *AFTER* .Active is set to True, for the MulticastGroups to be cumulative.

We appreciate your feedback.  If you have any questions, comments, or suggestions about this entry please contact our support team at