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.

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