Added details to public static bool QueueUserWorkItem<TState> (Action… (#1993)

* Added details to public static bool QueueUserWorkItem<TState> (Action<TState> callBack, TState state, bool preferLocal)

* fixed error

* fix errors

* fix errors

* Apply suggestions from code review

Co-Authored-By: peteraritchie <[email protected]>

Author: peteraritchie

xml/System.Threading/ThreadPool.xml

@@ -591,13 +591,14 @@
         <Parameter Name="preferLocal" Type="System.Boolean" />
       </Parameters>
       <Docs>
-        <typeparam name="TState">To be added.</typeparam>
-        <param name="callBack">To be added.</param>
-        <param name="state">To be added.</param>
-        <param name="preferLocal">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <typeparam name="TState">The type of elements of <paramref name="state" />.</typeparam>
+        <param name="callBack">An <see cref="T:System.Action`1" /> representing the method to execute.</param>
+        <param name="state">An object containing data to be used by the method.</param>
+        <param name="preferLocal">Unlike other QueueUserWorkItem methods, prefer exeucting in the local thread pool and not the global thread pool.</param>
+        <summary>Queues a method specified by an <see cref="T:System.Action`1" /> delegate for execution, and provides data to be used by the method. The method executes when a thread pool thread becomes available.</summary>
+        <returns>
+          <see langword="true" /> if the method is successfully queued; <see cref="T:System.NotSupportedException" /> is thrown if the work item could not be queued.
+        </returns>
       </Docs>
     </Member>
     <MemberGroup MemberName="RegisterWaitForSingleObject">
@@ -1267,13 +1268,13 @@
         <Parameter Name="preferLocal" Type="System.Boolean" Index="2" FrameworkAlternate="netcore-3.0" />
       </Parameters>
       <Docs>
-        <typeparam name="TState">To be added.</typeparam>
-        <param name="callBack">To be added.</param>
-        <param name="state">To be added.</param>
-        <param name="preferLocal">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <typeparam name="TState">The type of elements of <paramref name="state" />.</typeparam>
+        <param name="callBack">A delegate representing the method to execute.</param>
+        <param name="state">An object containing data to be used by the method.</param>
+        <param name="preferLocal">`true` to execute in the local threadpool; `false` to execute in the global thread pool.</param>
+        <summary>Queues a method specified by an <see cref="T:System.Action`1" /> delegate for execution, and specifies an object containing data to be used by the method. The method executes when a thread pool thread becomes available.</summary>
+        <returns>
+          <see langword="true" /> if the method is successfully queued; <see cref="T:System.NotSupportedException" /> is thrown if the work item could not be queued.</returns>
       </Docs>
     </Member>
     <MemberGroup MemberName="UnsafeRegisterWaitForSingleObject">
@@ -1566,4 +1567,4 @@
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>