protected void DeleteFromClass_Click(object sender, EventArgs e) { using (CustomClassificationProvider provider = new CustomClassificationProvider()) { if ((this.MultiBuffer.Count > 0) && provider.GetTreeNode(this.RequestClassificationTreeID) != null) { provider.DeleteProducts(this.User.ID, this.RequestClassificationTreeID, hiddenSelectedProducts.Value.ToString().Split(',').Select(s => new Guid(s)).ToList()); //provider.DeleteProducts(id, this.ProductsBuffer); } } //insert here //RefreshButton_Click(sender, e); GridPanel1.Reload(); }