C#: Update testcases with examples.

Author: michaelnebel

csharp/ql/test/library-tests/dataflow/flowsources/aspremote/AspRemoteFlowSource.cs

@@ -5,9 +5,12 @@ namespace Testing
 
     public class ViewModel
     {
-        public string RequestId { get; set; }
-
-        public object Query;
+        public string RequestId { get; set; } // Considered tainted.
+        public object RequestIdField; // Not considered tainted as it is a field.
+        public string RequestIdOnlyGet { get; } // Not considered tainted as there is no setter.
+        public string RequestIdPrivateSet { get; private set; } // Not considered tainted as it has a private setter.
+        public static object RequestIdStatic { get; set; } // Not considered tainted as it is static.
+        private string RequestIdPrivate { get; set; } // Not considered tainted as it is private.
     }
 
     public class TestController : Controller

csharp/ql/test/library-tests/dataflow/flowsources/aspremote/aspRemoteFlowSource.expected

@@ -1,5 +1,4 @@
 remoteFlowSourceMembers
 | AspRemoteFlowSource.cs:8:23:8:31 | RequestId |
-| AspRemoteFlowSource.cs:10:23:10:27 | Query |
 remoteFlowSources
-| AspRemoteFlowSource.cs:15:42:15:50 | viewModel |
+| AspRemoteFlowSource.cs:18:42:18:50 | viewModel |