protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
_context = new ProductsEntities3();
// Call the Load method to get the data for the given DbSet
// from the database.
// The data is materialized as entities. The entities are managed by
// the DbContext instance.
_context.Categories.Load();
// Bind the categoryBindingSource.DataSource to
// all the Unchanged, Modified and Added Category objects that
// are currently tracked by the DbContext.
// Note that we need to call ToBindingList() on the
// ObservableCollection<TEntity> returned by
// the DbSet.Local property to get the BindingList<T>
// in order to facilitate two-way binding in WinForms.
this.categoryBindingSource.DataSource =
_context.Categories.Local.ToBindingList();
}
private void TestInit()
{
using (ProductsEntities3 ctx = new ProductsEntities3())
{
Product p = new Product
{
Name = "P10",
};
Category c = new Category
{
Name = "C10"
};
ctx.Products.Add(p);
ctx.Categories.Add(c);
c.Products.Add(p);
ctx.SaveChanges();
}
MessageBox.Show("TestInit Completed");
}
