public int DeleteCourse(string courseCode)
{
int i = 0;
using (OleDbCommand command = new OleDbCommand())
{
i = ExecuteNonQuery(CourseStringsInner.DeleteCourse(courseCode));
}
return(i);
}
public CourseModel UpdateCourse(CourseModel courseModel)
{
int i = -1;
using (OleDbCommand command = new OleDbCommand())
{
i = ExecuteNonQuery(CourseStringsInner.UpdateCourse(courseModel));
}
return(GetOneCourseByCode(courseModel.courseCode));
}
public List <CourseModel> GetAllCourses()
{
DataTable dt = new DataTable();
using (OleDbCommand command = new OleDbCommand())
{
dt = GetMultipleQuery(CourseStringsInner.GetAllCourses());
}
List <CourseModel> arrCourse = new List <CourseModel>();
foreach (DataRow ms in dt.Rows)
{
arrCourse.Add(CourseModel.ToObject(ms));
}
return(arrCourse);
}
public CourseModel GetOneCourseByCode(string courseCode)
{
DataTable dt = new DataTable();
if (courseCode.Equals(string.Empty) || courseCode.Equals(""))
{
throw new ArgumentOutOfRangeException();
}
CourseModel courseModel = new CourseModel();
using (OleDbCommand command = new OleDbCommand())
{
dt = GetMultipleQuery(CourseStringsInner.GetOneCourseByCode(courseCode));
}
foreach (DataRow ms in dt.Rows)
{
courseModel = CourseModel.ToObject(ms);
}
return(courseModel);
}