/// <summary>
/// Handles the Clicked event of the OverPreRequest control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="TappedRoutedEventArgs"/> instance containing the event data.</param>
private async void OverPreRequest_Clicked(object sender, TappedRoutedEventArgs e)
{
TextBlock tappedText = sender as TextBlock;
Grid tappedGrid = (tappedText.Parent as Border).Parent as Grid;
var viewBoxes = from vb in tappedGrid.Children.OfType <Viewbox>()
select vb;
TextBlock courseText = viewBoxes.First().Child as TextBlock;
System.Diagnostics.Debug.WriteLine("course Name = " + courseText.Text);
DataServiceQuery <COURSE_AVAIL> cDsq = (DataServiceQuery <COURSE_AVAIL>)(from kc in ctx.COURSE_AVAIL
where kc.TITLE == courseText.Text
select kc);
TaskFactory <IEnumerable <COURSE_AVAIL> > tf = new TaskFactory <IEnumerable <COURSE_AVAIL> >();
COURSE_AVAIL tmpCourse = (await tf.FromAsync(cDsq.BeginExecute(null, null), iar => cDsq.EndExecute(iar))).FirstOrDefault();
Course navigateToCourse = Constants.CourseAvail2Course(tmpCourse);
Frame.Navigate(typeof(CourseOverview), navigateToCourse);
}
/// <summary>
/// Courses the rec2 course.
/// </summary>
/// <param name="c">The c.</param>
/// <returns></returns>
public static Course CourseRec2Course(COURSE_AVAIL c)
{
Course course = new Course();
course.Title = c.TITLE;
course.Intro = c.INTRO;
course.ID = c.ID;
course.Teacher = c.TEACHER_NAME;
course.Category = "Recommendation";
course.Price = c.PRICE;
course.Rate = c.RATE;
course.PG = c.RESTRICT_AGE;
course.LessonNum = c.LESSON_NUM;
course.RatedUser = c.RATED_USERS;
course.ImageUri = DataCenterURI + c.ICON_URL.Replace('\\', '/');
course.IsBuy = false;
course.IsTeach = false;
return(course);
}
public void AddToCOURSE_AVAIL(COURSE_AVAIL cOURSE_AVAIL)
{
base.AddObject("COURSE_AVAIL", cOURSE_AVAIL);
}
public static COURSE_AVAIL CreateCOURSE_AVAIL(int ID, decimal pRICE, string tITLE)
{
COURSE_AVAIL cOURSE_AVAIL = new COURSE_AVAIL();
cOURSE_AVAIL.ID = ID;
cOURSE_AVAIL.PRICE = pRICE;
cOURSE_AVAIL.TITLE = tITLE;
return cOURSE_AVAIL;
}
/// <summary>
/// Invoked when this page is about to be displayed in a Frame.
/// </summary>
/// <param name="e">Event data that describes how this page was reached. The Parameter
/// property is typically used to configure the page.</param>
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
course = e.Parameter as Course;
//// Prerequisite initialization:
/*
* for (int i = 0; i < 30; ++i)
* {
* AddToPreRequestCoursesPanel("Algorithm" + i);
* }
* AddToPreRequestCoursesPanel("We See");
*/
List <Constants.DepCourse> results = Constants.DepCourse.GetDepCourses(course.Title);
foreach (Constants.DepCourse dc in results)
{
System.Diagnostics.Debug.WriteLine("if learned");
if (!Constants.DepCourse.IfLearned(dc.CourseName))
{
System.Diagnostics.Debug.WriteLine("Learned");
AddToPreRequestCoursesPanel(dc.CourseName);
}
//System.Diagnostics.Debug.WriteLine(dc.CourseName);
}
try
{
DataServiceQuery <COURSE_AVAIL> cDsq = (DataServiceQuery <COURSE_AVAIL>)(from kc in ctx.COURSE_AVAIL
where course.ID == kc.ID
select kc);
TaskFactory <IEnumerable <COURSE_AVAIL> > tf = new TaskFactory <IEnumerable <COURSE_AVAIL> >();
COURSE_AVAIL tmpCourse = (await tf.FromAsync(cDsq.BeginExecute(null, null), iar => cDsq.EndExecute(iar))).FirstOrDefault();
course = Constants.CourseAvail2Course(tmpCourse);
}
catch
{
ShowMessageDialog("Network connection error2!");
Frame.GoBack();
}
UserProfileBt.DataContext = Constants.User;
DataContext = course;
introGrid.DataContext = course;
frame.Navigate(typeof(CourseDetail.Overview), course);
isTeach = false;
isBuy = false;
try
{
teachCourses = (DataServiceQuery <COURSE_AVAIL>)(from teachC in ctx.COURSE_AVAIL
where teachC.TEACHER_NAME == Constants.User.NAME
select teachC);
TaskFactory <IEnumerable <COURSE_AVAIL> > teachTF = new TaskFactory <IEnumerable <COURSE_AVAIL> >();
IEnumerable <COURSE_AVAIL> tcs = await teachTF.FromAsync(teachCourses.BeginExecute(null, null), iar => teachCourses.EndExecute(iar));
buyCourses = (DataServiceQuery <ATTEND>)(from buyC in ctx.ATTEND
where buyC.CUSTOMER_ID == Constants.User.ID
select buyC);
TaskFactory <IEnumerable <ATTEND> > buyCF = new TaskFactory <IEnumerable <ATTEND> >();
IEnumerable <ATTEND> bcs = await buyCF.FromAsync(buyCourses.BeginExecute(null, null), iar => buyCourses.EndExecute(iar));
foreach (var t in tcs)
{
if (t.ID == course.ID)
{
isTeach = true;
break;
}
}
foreach (var b in bcs)
{
if (b.COURSE_ID == course.ID)
{
isBuy = true;
break;
}
}
}
catch
{
ShowMessageDialog("Network connection error3!");
Frame.GoBack();
}
if (course.Price == null || course.Price.Value == 0)
{
PriceTextBlock.Text = "Free";
}
else
{
PriceTextBlock.Text = "$ " + Math.Round(course.Price.Value, 2);
}
System.Diagnostics.Debug.WriteLine(course.Rate);
SetStarsStackPanel(course.Rate ?? 0);
if (isTeach)
{
courseButton.Content = "Teach";
}
else if (isBuy)
{
courseButton.Content = "Attend";
}
else
{
courseButton.Content = "Buy";
}
}
