Improve ArgumentNullExceptions on DiagnosticCounter.DisplayName/Unit (#26035)

Signed-off-by: dotnet-bot <dotnet-bot@microsoft.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/netcore/System.Private.CoreLib/shared/System/Diagnostics/Tracing/DiagnosticCounter.cs b/netcore/System.Private.CoreLib/shared/System/Diagnostics/Tracing/DiagnosticCounter.cs
index 2fc5911bccf..742c357535a 100644
--- a/netcore/System.Private.CoreLib/shared/System/Diagnostics/Tracing/DiagnosticCounter.cs
+++ b/netcore/System.Private.CoreLib/shared/System/Diagnostics/Tracing/DiagnosticCounter.cs
@@ -83,7 +83,7 @@ namespace System.Diagnostics.Tracing
             set
             {
                 if (value == null)
-                    throw new ArgumentException("Cannot set null as DisplayName");
+                    throw new ArgumentNullException(nameof(DisplayName));
                 _displayName = value;
             }
         }
@@ -95,7 +95,7 @@ namespace System.Diagnostics.Tracing
             set
             {
                 if (value == null)
-                    throw new ArgumentException("Cannot set null as DisplayUnits");
+                    throw new ArgumentNullException(nameof(DisplayUnits));
                 _displayUnits = value;
             }
         }