/// <summary>
/// gets all incoming friend requests
/// </summary>
/// <param name="userId">id of user</param>
/// <returns>list of incoming friend requests</returns>
public static List <User> IncomingFriendRequests(int user)
{
var tb = DbConnections.IncomingRequests(user);
return((from DataRow row in tb.Rows select new User(row)).ToList());
}