Respect user options around string/String when generating parameter check.

src/EditorFeatures/CSharpTest/InitializeParameter/AddParameterCheckTests.cs

@@ -705,6 +705,7 @@ public C(string s)
 }", index: 2);
         }
 
+        [WorkItem(19173, "https://github.com/dotnet/roslyn/issues/19173")]
         [Fact, Trait(Traits.Feature, Traits.Features.CodeActionsInitializeParameter)]
         public async Task TestMissingOnUnboundTypeWithExistingNullCheck()
         {
@@ -721,5 +722,38 @@ public C(String [||]s)
     }
 }");
         }
+
+        [WorkItem(19174, "https://github.com/dotnet/roslyn/issues/19174")]
+        [Fact, Trait(Traits.Feature, Traits.Features.CodeActionsInitializeParameter)]
+        public async Task TestRespectPredefinedTypePreferences()
+        {
+            await TestInRegularAndScript1Async(
+@"
+using System;
+
+class Program
+{
+    static void Main([||]String bar)
+    {
+    }
+}",
+@"
+using System;
+
+class Program
+{
+    static void Main(String bar)
+    {
+        if (String.IsNullOrEmpty(bar))
+        {
+            throw new ArgumentException(""message"", nameof(bar));
+        }
+    }
+}", index: 1,
+    parameters: new TestParameters(
+        options: Option(
+            CodeStyleOptions.PreferIntrinsicPredefinedTypeKeywordInMemberAccess,
+            CodeStyleOptions.FalseWithSuggestionEnforcement)));
+        }
     }
 }
\ No newline at end of file

src/Features/CSharp/Portable/InitializeParameter/CSharpAddParameterCheckCodeRefactoringProvider.cs

 // Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
 
-using System;
 using System.Composition;
 using Microsoft.CodeAnalysis.CodeRefactorings;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.Editing;
 using Microsoft.CodeAnalysis.InitializeParameter;
-using Microsoft.CodeAnalysis.Semantics;
 
 namespace Microsoft.CodeAnalysis.CSharp.InitializeParameter
 {

src/Features/Core/Portable/InitializeParameter/AbstractAddParameterCheckCodeRefactoringProvider.cs

@@ -241,11 +241,13 @@ private bool IsNullLiteral(IOperation operand)
             Compilation compilation, SyntaxGenerator generator,
             IParameterSymbol parameter, string methodName)
         {
+            var stringType = compilation.GetSpecialType(SpecialType.System_String);
+
             // generates: if (string.IsXXX(s)) throw new ArgumentException("message", nameof(s))
             return (TStatementSyntax)generator.IfStatement(
                 generator.InvocationExpression(
                     generator.MemberAccessExpression(
-                        generator.TypeExpression(SpecialType.System_String),
+                        generator.TypeExpression(stringType),
                         generator.IdentifierName(methodName)),
                     generator.Argument(generator.IdentifierName(parameter.Name))),
                 SpecializedCollections.SingletonEnumerable(