常用方法
常用方法
常用方法
常用方法
public async Task <double> GetAverageMarkForLesson(int lessonId, DateTime startDate, DateTime endDate) => await _repository.GetAverageMarkForLesson(lessonId, startDate, endDate);
public async Task <double> GetAverageMarkForLesson(int lessonId, DateTime startDate, DateTime endDate) => await _repository.GetAverageMarkForLesson(lessonId, startDate, endDate);