/// <summary>
/// Реализует логику добавления ного элемента в таблицу
/// </summary>
private void coffeeDataGrid_AddingNewItem(object sender, AddingNewItemEventArgs e)
{
var grade = new CoffeeGrade();
e.NewItem = grade;
var viewData = new CoffeeGradeViewData(grade);
ProductsData.Add(viewData);
}
public HidableCoffeeGrade(CoffeeGrade grade)
{
if (grade == null)
{
throw new ArgumentException();
}
Grade = grade;
Visibility = true;
}
public CoffeeGradeViewData(CoffeeGrade grade)
{
if (grade == null)
{
throw new ArgumentException();
}
Grade = grade;
Visible = true;
}
/// <summary>
/// Определяет, подходит ли grade под фильтр с заданной substr
/// </summary>
private bool searchPredicate(string substr, CoffeeGrade grade)
{
if (grade == null)
{
return(false);
}
bool isNumber = false;
string cellString = string.Empty;
int cellNumber = 0;
switch (searchComboBox.SelectedIndex)
{
case 0:
cellString = grade.Name;
break;
case 1:
cellString = grade.FullName;
break;
case 2:
cellString = grade.Region;
break;
case 3:
cellNumber = grade.Height;
isNumber = true;
break;
case 4:
cellNumber = grade.RipeDuration;
isNumber = true;
break;
case 5:
cellString = grade.Description;
break;
default: throw new NotImplementedException();
}
if (!isNumber)
{
return(cellString.ToLower().IndexOf(substr) != -1);
}
int searchVal;
if (!int.TryParse(substr, out searchVal))
{
return(false);
}
return(searchVal == cellNumber);
}
/// <summary>
/// Получает построчно объекты типа CoffeeGrade
/// </summary>
public IEnumerable <CoffeeGrade> ReadGrades()
{
var enumerator = fileLines.GetEnumerator();
CoffeeGrade grade;
while (enumerator.MoveNext())
{
string line = enumerator.Current;
bool success = CoffeeGrade.TryParse(out grade, line, CsvSeparator);
yield return(success ? grade : null);
}
}
