roslyn

Given the following code: public class C { public void M() { var x = 5; Action<int> action = y => Console.WriteLine(y); } } Using VS2013, .NET 4.5. When looking at the decompiled code, we can see that the compiler is caching the delegate at the call site: public class C { [CompilerGenerated] private static Action<int> CS$<>9__CachedAnonymousMethodDelegate1; public void M() { if (C.CS$<>9__CachedAnonymousMethodDelegate1 == null) { C.CS$<>9__CachedAnonymousMethodDelegate1 = new Action<int>(C.<M>b__0); } Action<int> arg_1D_0 = C.CS$<>9__CachedAnonymousMethodDelegate1; } [CompilerGenerated]

I'm looking to scan a group of .cs files to see which ones call the Value property of a Nullable<T> (finding all references). For example, this would match: class Program { static void Main() { int? nullable = 123; int value = nullable.Value; } } I found out about Roslyn and looked at some of the samples, but many of them are outdated and the API is huge. How would I go about doing this? I'm stuck after parsing the syntax tree. This is what I have so far: public static void Analyze(string sourceCode) { var tree = CSharpSyntaxTree.ParseText(sourceCode); tree./* ??? What goes here? */ } You're

I am testing Visual Studio 2015 with C# 6.0 but the language features are not working. In an MVC web application, the following code does compile: if (!string.IsNullOrWhiteSpace(Model.Profile?.TypeName)) { // More logic here... } However, when I run the application via Debug and IIS Express, I get the following error: CS1525: Invalid expression term '.' How do I enable these features? This works in MVC 5 (tested 5.2.3), you just need to add the roslyn code dom Nuget package CodeDOM Providers for .NET Compiler... Replacement CodeDOM providers that use the new .NET Compiler Platform ("Roslyn")