static void Print(PictureCategory cat, int level)
{
StringBuilder sb = new StringBuilder();
Console.WriteLine("{0}{1}", sb.Append(' ', level).ToString(), cat.Name);
foreach (PictureCategory child in cat.Subcategories)
{
Print(child, level + 1);
}
}
/// <summary>
/// Create a new PictureCategory object.
/// </summary>
/// <param name="categoryId">Initial value of the CategoryId property.</param>
/// <param name="name">Initial value of the Name property.</param>
public static PictureCategory CreatePictureCategory(global::System.Int32 categoryId, global::System.String name)
{
PictureCategory pictureCategory = new PictureCategory();
pictureCategory.CategoryId = categoryId;
pictureCategory.Name = name;
return(pictureCategory);
}
static void RunExample()
{
using (var context = new EFRecipesEntities())
{
var louvre = new PictureCategory {
Name = "Louvre"
};
var child = new PictureCategory {
Name = "Egyptian Antiquites"
};
louvre.Subcategories.Add(child);
child = new PictureCategory {
Name = "Sculptures"
};
louvre.Subcategories.Add(child);
child = new PictureCategory {
Name = "Paintings"
};
louvre.Subcategories.Add(child);
var paris = new PictureCategory {
Name = "Paris"
};
paris.Subcategories.Add(louvre);
var vacation = new PictureCategory {
Name = "Summer Vacation"
};
vacation.Subcategories.Add(paris);
context.PictureCategories.AddObject(paris);
context.SaveChanges();
}
using (var context = new EFRecipesEntities())
{
context.ContextOptions.LazyLoadingEnabled = true;
PictureCategory root = (from c in context.PictureCategories
where c.ParentCategory == null
select c).FirstOrDefault();
Print(root, 0);
}
Console.WriteLine("Press <enter> to continue...");
Console.ReadLine();
}
/// <summary>
/// Deprecated Method for adding a new object to the PictureCategories EntitySet. Consider using the .Add method of the associated ObjectSet<T> property instead.
/// </summary>
public void AddToPictureCategories(PictureCategory pictureCategory)
{
base.AddObject("PictureCategories", pictureCategory);
}
