public void PopulateAssignedCategoryData(Savu_Antonia_JewelriesContext context,
Jewelry jewelry)
{
var allCategories = context.Category;
var jewelryCategories = new HashSet <int>(
jewelry.JewelryCategories.Select(c => c.JewelryID));
AssignedCategoryDataList = new List <AssignedCategoryData>();
foreach (var cat in allCategories)
{
AssignedCategoryDataList.Add(new AssignedCategoryData
{
CategoryID = cat.ID,
Name = cat.CategoryName,
Assigned = jewelryCategories.Contains(cat.ID)
});
}
}
public void UpdateJewelryCategories(Savu_Antonia_JewelriesContext context,
string[] selectedCategories, Jewelry jewelryToUpdate)
{
if (selectedCategories == null)
{
jewelryToUpdate.JewelryCategories = new List <JewelryCategory>();
return;
}
var selectedCategoriesHS = new HashSet <string>(selectedCategories);
var jewelryCategories = new HashSet <int>
(jewelryToUpdate.JewelryCategories.Select(c => c.Category.ID));
foreach (var cat in context.Category)
{
if (selectedCategoriesHS.Contains(cat.ID.ToString()))
{
if (!jewelryCategories.Contains(cat.ID))
{
jewelryToUpdate.JewelryCategories.Add(
new JewelryCategory
{
JewelryID = jewelryToUpdate.ID,
CategoryID = cat.ID
});
}
}
else
{
if (jewelryCategories.Contains(cat.ID))
{
JewelryCategory courseToRemove
= jewelryToUpdate
.JewelryCategories
.SingleOrDefault(i => i.CategoryID == cat.ID);
context.Remove(courseToRemove);
}
}
}
}