Refresh all data related to a group channel

When a user is online, all data associated with the group channels automatically updated by the Chat SDK. However, when a user is disconnected from the Sendbird server and reconnects later, you should call the Refresh() method to update the channels with the latest information.

groupChannel.Refresh((inError) =>
{
    if (inError != null)
        return; //Handle error.
});

Note: If you want to provide the updated channels with the latest information when your user's app is in the foreground, call Refresh() in the OnReconnectSucceeded() method which receives a callback from the Sendbird server when successfully reconnected.