public string Save(CourseAssign courseAssign)
{
if (courseAssignGateway.IsSubjectExsists(courseAssign))
{
return("The Course is already Assigned");
}
else
{
float Credit = Convert.ToSingle(courseAssignGateway.GetCourseId(courseAssign.CourseCode).Credit);
float AvailableCredit = Convert.ToSingle(courseAssignGateway.GetAvailableCreditByTeacherId(courseAssign.TeacherId).ReminingCredit);
float RemainingCredit = (AvailableCredit - Credit);
int rowAffect = courseAssignGateway.UpdateTeacher(courseAssign.TeacherId, RemainingCredit);
if (rowAffect > 0)
{
int affect = courseAssignGateway.Save(courseAssign);
if (affect > 0)
{
return("Save Successfully");
}
else
{
return("Failed");
}
}
else
{
return("Failed");
}
}
}