NullReferenceException fixed (#86)

deaquino · BornToBeRoot · commit fa916d820820 · 2018-04-24T15:37:49.000+02:00
ConfigGateway set error FirstOrDefault with empty collections.
diff --git a/Source/NETworkManager/ViewModels/NetworkInterfaceViewModel.cs b/Source/NETworkManager/ViewModels/NetworkInterfaceViewModel.cs
@@ -159,7 +159,7 @@ public NetworkInterfaceInfo SelectedNetworkInterface
                         ConfigEnableStaticIPAddress = true;
                         ConfigIPAddress = (value != null) ? value.IPv4Address.FirstOrDefault().ToString() : string.Empty;
                         ConfigSubnetmaskOrCidr = (value.Subnetmask != null) ? value.Subnetmask.FirstOrDefault().ToString() : string.Empty;
-                        ConfigGateway = (value.IPv4Gateway != null) ? value.IPv4Gateway.FirstOrDefault().ToString() : string.Empty;
+                        ConfigGateway = (value.IPv4Gateway?.Any() == true) ? value.IPv4Gateway.FirstOrDefault().ToString() : string.Empty;
                     }
 
                     if (value.DNSAutoconfigurationEnabled)

Original file line number	Diff line number	Diff line change
`@@ -159,7 +159,7 @@ public NetworkInterfaceInfo SelectedNetworkInterface`
`159`	`159`	`ConfigEnableStaticIPAddress = true;`
`160`	`160`	`ConfigIPAddress = (value != null) ? value.IPv4Address.FirstOrDefault().ToString() : string.Empty;`
`161`	`161`	`ConfigSubnetmaskOrCidr = (value.Subnetmask != null) ? value.Subnetmask.FirstOrDefault().ToString() : string.Empty;`
`162`		`- ConfigGateway = (value.IPv4Gateway != null) ? value.IPv4Gateway.FirstOrDefault().ToString() : string.Empty;`
	`162`	`+ ConfigGateway = (value.IPv4Gateway?.Any() == true) ? value.IPv4Gateway.FirstOrDefault().ToString() : string.Empty;`
`163`	`163`	`}`
`164`	`164`
`165`	`165`	`if (value.DNSAutoconfigurationEnabled)`