ATMLCommonLibrary.controls.lists.PhysicalInterfaceListControl.PhysicalInterfaceListControl_Validating C# (CSharp) Method

        private void PhysicalInterfaceListControl_Validating( object sender, CancelEventArgs e )
        {
            tabConnectors.ToolTipText = "";
            tabPorts.ToolTipText = "";
            lvConnectors.HasErrors = false;
            lvPorts.HasErrors = false;
            errorProvider.SetError( this, "" );
            if (_physicalInterface.Items == null || _physicalInterface.Items.Count == 0)
            {
                lvConnectors.HasErrors = true;
                lvPorts.HasErrors = true;
                tabConnectors.ToolTipText = Resources.errmsg_at_least_one_interface_item;
                tabPorts.ToolTipText = Resources.errmsg_at_least_one_interface_item;
                e.Cancel = true;
                errorProvider.SetError( this, Resources.errmsg_at_least_one_interface_item );
            }
        }