public void PopulateAssignedCategoryData(Moglan_Vlad_ProiectContext context,
Device device)
{
var allCategories = context.Category;
var deviceCategories = new HashSet <int>(
device.DeviceCategories.Select(c => c.DeviceID));
AssignedCategoryDataList = new List <AssignedCategoryData>();
foreach (var cat in allCategories)
{
AssignedCategoryDataList.Add(new AssignedCategoryData
{
CategoryID = cat.ID,
Name = cat.CategoryName,
Assigned = deviceCategories.Contains(cat.ID)
});
}
}
public void UpdateDeviceCategories(Moglan_Vlad_ProiectContext context,
string[] selectedCategories, Device deviceToUpdate)
{
if (selectedCategories == null)
{
deviceToUpdate.DeviceCategories = new List <DeviceCategory>();
return;
}
var selectedCategoriesHS = new HashSet <string>(selectedCategories);
var deviceCategories = new HashSet <int>
(deviceToUpdate.DeviceCategories.Select(c => c.Category.ID));
foreach (var cat in context.Category)
{
if (selectedCategoriesHS.Contains(cat.ID.ToString()))
{
if (!deviceCategories.Contains(cat.ID))
{
deviceToUpdate.DeviceCategories.Add(
new DeviceCategory
{
DeviceID = deviceToUpdate.ID,
CategoryID = cat.ID
});
}
}
else
{
if (deviceCategories.Contains(cat.ID))
{
DeviceCategory courseToRemove
= deviceToUpdate
.DeviceCategories
.SingleOrDefault(i => i.CategoryID == cat.ID);
context.Remove(courseToRemove);
}
}
}
}
