private async void RemoveCustomer(object sender, EventArgs e)
{
INode currentItem = graphControl.Selection.SelectedNodes.FirstOrDefault();
if (currentItem != null)
{
// Remember the selected node for triggering a layout.
rootNodeToBeRemoved = graphControl.CurrentItem as INode;
// Remove the customer which is represented by the selected node.
Customer customer = TreeSource.GetBusinessObject(currentItem) as Customer;
if (customer != null)
{
CustomerRepository.RemoveCustomer(customer);
await DoLayout();
}
}
}
private async void CreateCustomer(object sender, EventArgs e)
{
// Remember whether the new customer is a root customer for triggering a layout.
INode currentItem = graphControl.Selection.SelectedNodes.FirstOrDefault();
newRootNode = currentItem == null;
// Get parent customer.
Customer parentCustomer = null;
if (!newRootNode)
{
parentCustomer = TreeSource.GetBusinessObject(currentItem) as Customer;
}
// Create the new customer.
CustomerRepository.CreateCustomer("Customer " + customerCounter++, parentCustomer);
await DoLayout();
}