public static async Task <int> FromDBByLikeEMailAsync(this UserDataContainer item, string email, int offset, int limit = 10) { item.Clear(); UserBasicDataContainer basicDataContainer = new UserBasicDataContainer(); if (await basicDataContainer.FromDBByLikeEMailAsync(email, offset, limit) == 0) { return(0); } List <Task <bool> > tasks = new List <Task <bool> >(); foreach (var it in basicDataContainer.Items) { var UserData = new UserData(); UserData.BasicData = it; item.Add(UserData); tasks.Add(UserData.FromDBByUserIdAsync(it.UserId, false)); } await Task.WhenAll(tasks.ToArray()); return(item.Count); }