// Add new category
public void AddCategory(CategoryDto category)
{
int id = ++ViewModel.CategoryCollection.LastCategoryId;
var newCategory = new CategoryDto {
CategoryId = id, Name = ViewModel.NewCategory.Name, CategoryType = ViewModel.NewCategory.CategoryType, ParentUserId = UserLoggedIn.UserId
};
ViewModel.CategoryCollection.Categories.Add(newCategory);
RestClient.AddCategory(newCategory);
ViewModel.NavigationViewItems.AddMenuItem(newCategory);
ViewModel.NewCategory.Name = String.Empty;
}