internal async Task uAddMark()
{
await ListBooks();
string stringID;
int ID;
do
{
Console.Write("Select book ID: ");
stringID = Console.ReadLine();
}while (int.TryParse(stringID, out ID));
await MarkFunctions.AddItem(await uCreateSubject(ID));
}
internal async Task ListBooks()
{
var books = await MarkFunctions.GetBooks();
string consoleWrite = string.Empty;
foreach (var book in books)
{
consoleWrite += "ID: " + book.ID;
consoleWrite += " Name: " + book.Name;
consoleWrite += " Year: " + book.Year;
Console.WriteLine();
}
Console.WriteLine(consoleWrite);
}
private void displayMarks()
{
Task <List <Subject> > task = db.GetSubjects(book);
List <Subject> subjects = new List <Subject>();
task.ContinueWith(t => { subjects = t.Result; }).Wait();
if (subjects.Count == 0)
{
ErrorNoSubjects.IsVisible = true;
}
else
{
ErrorNoSubjects.IsVisible = false;
foreach (var subject in subjects)
{
List <Mark> marks = new List <Mark>();
db.GetMarks(subject).ContinueWith(t => { marks = t.Result; }).Wait();
StackLayout ssl = new StackLayout()
{
Orientation = StackOrientation.Horizontal
};
ssl.Children.Add(new Label()
{
Text = subject.Name
});
ssl.Children.Add(new Label()
{
Text = MarkFunctions.GetAverage(marks).ToString("R")
});
foreach (var mark in marks)
{
ssl.Children.Add(new Label()
{
Text = mark.Value + "(" + mark.Weight + ")"
});
}
}
}
}
internal async Task uAddBook()
{
await MarkFunctions.AddItem(uCreateBook());
}
internal async Task <int> AddBook(SubjectBook book)
{
return(await MarkFunctions.AddItem(book));
}
