per feedback

Author: twsouthwick

src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/SqlClientEventSource.cs

@@ -897,7 +897,7 @@ internal void StateDumpEvent<T0, T1>(string message, T0 args0, T1 args1)
         [NonEvent]
         internal void StateDumpEvent<T0, T1, T2>(string message, T0 args0, T1 args1, T2 args2)
         {
-            StateDump(string.Format(message, args0?.ToString() ?? NullStr, args1?.ToString() ?? NullStr, args2?.ToString()));
+            StateDump(string.Format(message, args0?.ToString() ?? NullStr, args1?.ToString() ?? NullStr, args2?.ToString() ?? NullStr));
         }
         #endregion
 

src/Microsoft.Data.SqlClient/tests/ManualTests/SQL/InstanceNameTest/InstanceNameTest.cs

@@ -212,8 +212,10 @@ private static string GetSPNInfo(string dataSource, string inInstanceName)
             string serverSPN = "";
             MethodInfo getSqlServerSPNs = sniProxyObj.GetType().GetMethod("GetSqlServerSPNs", BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic, null, CallingConventions.Any, getSqlServerSPNsTypesArray, null);
 
-            string spnInfo = (string)getSqlServerSPNs.Invoke(sniProxyObj, new object[] { dataSrcInfo, serverSPN });
-            
+            object resolvedSpns = getSqlServerSPNs.Invoke(sniProxyObj, new object[] { dataSrcInfo, serverSPN });
+
+            string spnInfo = (string)resolvedSpns.GetType().GetProperty("Primary", BindingFlags.Instance | BindingFlags.Public).GetValue(resolvedSpns);
+
             return spnInfo;
         }