public static Decimal GetGpa(int CourseId, decimal score)
{
var bllCourse = new Course();
int credit = Convert.ToInt16(bllCourse.GetModel(CourseId).Credit);
if (score<60)
{
return 0;
}
decimal Gpa = (score / 10 - 5) * credit;
return Gpa;
}
public static Course GetCourseBLLInstance()
{
//如实例不存在，则New一个新实例，否则返回已有实例
if (CourseBLLInstance == null)
{
lock (syncRootCourse)
{
if (CourseBLLInstance == null)
CourseBLLInstance = new Course();
}
}
return CourseBLLInstance;
}
public static string GetCourseName(int id)
{
var bll = new Course();
return bll.GetModel(id).Name;
}
public static decimal GetCourseGpa(int id)
{
var bll = new Course();
return decimal.Parse(bll.GetModel(id).Credit.ToString());
}