internal void BuildSupliersTree()
{
var suppliers = context.SupplierSet.ToList();
// чтобы захешировать и работало быстрее
var supplierCategories = context.SupplierCategorySet.ToList();
var supplierProducts = context.SupplierProductSet.ToList();
var supNodes = new TreeNodes();
foreach (var s in suppliers)
{
var supNode = new SupNode(s);
supNodes.Add(supNode);
}
treeSuppliers.DataSource = supNodes;
treeSuppliers.Refresh();
if (treeSuppliers.Nodes.Count > 0)
{
treeSuppliers.Nodes[0].Expanded = true;
}
}
private void treeSuppliers_DragDrop(object sender, DragEventArgs e)
{
Cursor = Cursors.WaitCursor;
// для перенесенных ссылок из браузера
string url = (string)e.Data.GetData(typeof(string));
var newProdSuplier = Scraper.Scrape(url);
if (newProdSuplier != null)
{
var treeNodes = treeSuppliers.DataSource as TreeNodes;
var node = treeNodes.Cast<SupNode>().FirstOrDefault(n => n.Base.Id == newProdSuplier.Id);
if (node == null)
{
node = new SupNode(newProdSuplier);
treeNodes.Add(node);
}
treeSuppliers.RefreshDataSource();
}
Cursor = Cursors.Default;
}
private void DropSupNode(SupNode supNode, ShopCatNode parentShopCatNode, TreeNodes targetCollection)
{
List<ShopCategory> newShopCategories = supNode.Base.CreateShopCategories(parentShopCatNode.Base);
context.SaveChanges();
targetCollection.Clear();
foreach (var newShopCategory in newShopCategories)
{
var newShopCatNode = new ShopCatNode(newShopCategory, parentShopCatNode);
targetCollection.Add(newShopCatNode);
}
}