Use var

src/EditorFeatures/CSharp/AutomaticCompletion/Sessions/CurlyBraceCompletionSession.cs

@@ -93,7 +93,7 @@ private static bool ContainsOnlyWhitespace(IBraceCompletionSession session)
                 return false;
             }
 
-            for (int i = start; i <= end; i++)
+            for (var i = start; i <= end; i++)
             {
                 if (!char.IsWhiteSpace(snapshot[i]))
                 {

src/EditorFeatures/CSharp/DecompiledSource/AssemblyResolver.cs

@@ -57,8 +57,8 @@ public PEFile ResolveModule(PEFile mainModule, string moduleName)
         {
             // Primitive implementation to support multi-module assemblies
             // where all modules are located next to the main module.
-            string baseDirectory = Path.GetDirectoryName(mainModule.FileName);
-            string moduleFileName = Path.Combine(baseDirectory, moduleName);
+            var baseDirectory = Path.GetDirectoryName(mainModule.FileName);
+            var moduleFileName = Path.Combine(baseDirectory, moduleName);
             if (!File.Exists(moduleFileName))
             {
                 return null;

src/EditorFeatures/CSharp/DecompiledSource/CSharpDecompiledSourceService.cs

@@ -108,9 +108,9 @@ private Document PerformDecompilation(Document document, string fullName, Compil
 
         private async Task<Document> AddAssemblyInfoRegionAsync(Document document, ISymbol symbol, CancellationToken cancellationToken)
         {
-            string assemblyInfo = MetadataAsSourceHelpers.GetAssemblyInfo(symbol.ContainingAssembly);
+            var assemblyInfo = MetadataAsSourceHelpers.GetAssemblyInfo(symbol.ContainingAssembly);
             var compilation = await document.Project.GetCompilationAsync(cancellationToken).ConfigureAwait(false);
-            string assemblyPath = MetadataAsSourceHelpers.GetAssemblyDisplay(compilation, symbol.ContainingAssembly);
+            var assemblyPath = MetadataAsSourceHelpers.GetAssemblyDisplay(compilation, symbol.ContainingAssembly);
 
             var regionTrivia = SyntaxFactory.RegionDirectiveTrivia(true)
                 .WithTrailingTrivia(new[] { SyntaxFactory.Space, SyntaxFactory.PreprocessingMessage(assemblyInfo) });

src/EditorFeatures/CSharp/LineSeparators/CSharpLineSeparatorService.cs

@@ -277,7 +277,7 @@ private static void ProcessUsings(SyntaxList<UsingDirectiveSyntax> usings, List<
 
             // first child needs no separator
             var seenSeparator = true;
-            for (int i = 0; i < children.Count - 1; i++)
+            for (var i = 0; i < children.Count - 1; i++)
             {
                 cancellationToken.ThrowIfCancellationRequested();
 

src/EditorFeatures/CSharp/NavigationBar/CSharpNavigationBarItemService.cs

@@ -251,8 +251,8 @@ private static void AddFieldSpan(ISymbol symbol, SyntaxTree tree, List<TextSpan>
 
             var declaringNode = reference.GetSyntax();
 
-            int spanStart = declaringNode.SpanStart;
-            int spanEnd = declaringNode.Span.End;
+            var spanStart = declaringNode.SpanStart;
+            var spanEnd = declaringNode.Span.End;
 
             var fieldDeclaration = declaringNode.GetAncestor<FieldDeclarationSyntax>();
             if (fieldDeclaration != null)