| TypeName | SA1208SystemUsingDirectivesMustBePlacedBeforeOtherUsingDirectives |
| CheckId | SA1208 |
| Category | Ordering Rules |
A using directive which declares a member of the System namespace appears after a using directive which declares a member of a different namespace, within a C# code file.
A violation of this rule occurs when a using directive for the System namespace is placed after a non-System using directive. Placing all System using directives at the top of the using directives can make the code cleaner and easier to read, and can help make it easier to identify the namespaces that are being used by the code.
Global using directives (C# 10) are analyzed independently from local using directives. Diagnostics and fixes compare only directives which both use, or both omit, the global modifier.
To fix an instance of this violation, place the System using directive above all using directives for other namespaces.
[SuppressMessage("StyleCop.CSharp.OrderingRules", "SA1208:SystemUsingDirectivesMustBePlacedBeforeOtherUsingDirectives", Justification = "Reviewed.")]#pragma warning disable SA1208 // SystemUsingDirectivesMustBePlacedBeforeOtherUsingDirectives
#pragma warning restore SA1208 // SystemUsingDirectivesMustBePlacedBeforeOtherUsingDirectives