# System.Globalization

``` diff
 namespace System.Globalization {
     public class CultureNotFoundException : ArgumentException {
-        protected CultureNotFoundException(SerializationInfo info, StreamingContext context);
+        [EditorBrowsableAttribute(EditorBrowsableState.Never)]
+        [ObsoleteAttribute("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
+        protected CultureNotFoundException(SerializationInfo info, StreamingContext context);
-        public override void GetObjectData(SerializationInfo info, StreamingContext context);
+        [EditorBrowsableAttribute(EditorBrowsableState.Never)]
+        [ObsoleteAttribute("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
+        public override void GetObjectData(SerializationInfo info, StreamingContext context);
     }
     [FlagsAttribute]
     public enum NumberStyles {
+        AllowBinarySpecifier = 1024,
+        BinaryNumber = 1027,
     }
 }
```

