void SaveAssignments() { if (!_dirty || _currEmployeeId < 1) { return; } _dirty = false; foreach (AssignmentItem a in _data.GetAssignmentsByEmployeeID(_currEmployeeId).ToList()) { _data.Assignments.Remove(a); } foreach (ProductTreeNode productNode in treeViewFeatures.Nodes) { foreach (FeatureTreeNode featureNode in productNode.Nodes) { if (featureNode.Checked) { _data.Assignments.Add(new AssignmentItem { EmployeeID = _currEmployeeId, ProductID = productNode.ProductID, FeatureID = featureNode.FeatureID }); } } } }