public string AssignCourse(CourseAssign courseassign)
{
int assignCourse = courseAssignGateway.AssignCourse(courseassign.TeacherId, courseassign.CourseId);
if (assignCourse > 0)
{
double remainingCredit = courseassign.ReaminingCredit - courseassign.Credit;
int updateRemainingCredit = courseAssignGateway.UpdateRemainingCreditOfTeacher(remainingCredit,
courseassign.TeacherId);
}
return("Course Assign Successfully.");
}