# Microsoft.VisualBasic.ApplicationServices

``` diff
 namespace Microsoft.VisualBasic.ApplicationServices {
     [EditorBrowsableAttribute(1)]
     public class CantStartSingleInstanceException : Exception {
-        [EditorBrowsableAttribute(2)]
-        protected CantStartSingleInstanceException(SerializationInfo info, StreamingContext context);
+        [EditorBrowsableAttribute(2)]
+        [ObsoleteAttribute("Type or member is obsolete", DiagnosticId="SYSLIB0051")]
+        protected CantStartSingleInstanceException(SerializationInfo info, StreamingContext context);
     }
     [EditorBrowsableAttribute(1)]
     public class NoStartupFormException : Exception {
-        [EditorBrowsableAttribute(2)]
-        protected NoStartupFormException(SerializationInfo info, StreamingContext context);
+        [EditorBrowsableAttribute(2)]
+        [ObsoleteAttribute("Type or member obsolete.", DiagnosticId="SYSLIB0051")]
+        protected NoStartupFormException(SerializationInfo info, StreamingContext context);
     }
 }
```

