public async Task DeleteMessage(int dialogId, int messageId)
{
await MessagesClient.DeleteMessage(messageId);
var dialog = FirstOrDefaultWithLock(dialogId);
if (dialog == null)
{
return;
}
var collection = dialog.Messages;
lock (collection)
{
var message = collection.FirstOrDefault(e => e.Id == messageId);
if (message != null)
{
collection.Remove(message);
}
}
}
