Add or remove a user event handler

To receive information about events related to users connected to the Sendbird server, add a user event handler with its unique user-defined ID by calling AddUserEventHandler().

If you want to stay informed of changes related to users and notify users' client apps of these changes, define and register multiple user event handlers to each view controller.

To add or remove OnTotalUnreadMessageCountUpdated(), visit this page and contact us on the Sendbird Dashboard.

The following code shows a full set of supported event callbacks with their parameters and how to add a user event handler to the SendbirdChat class.

SbUserEventHandler userEventHandler = new SbUserEventHandler 
{
    OnFriendsDiscovered = (inUsers) => 
    { 
        // Action when friends are discovered
    },
    OnTotalUnreadMessageCountChanged = (inUnreadMessageCount) => 
    {
        // Action when total unread message count changes
    }
};

SendbirdChat.AddUserEventHandler("UNIQUE_HANDLER_ID", userEventHandler);

The following code shows how to remove the user event handler.

SendbirdChat.RemoveUserEventHandler("UNIQUE_HANDLER_ID");