# System.Data.SqlTypes

``` diff
 namespace System.Data.SqlTypes {
-    [XmlSchemaProviderAttribute("GetXsdType")]
-    public struct SqlGuid : IComparable, IEquatable<SqlGuid>, INullable, IXmlSerializable {
+    [XmlSchemaProviderAttribute("GetXsdType")]
+    public struct SqlGuid : IComparable, IEquatable<SqlGuid>, INullable, ISerializable, IXmlSerializable {
+        void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context);
     }
 }
```

