roslyn

I have this very simple example: class Program { class A { public bool B; } static void Main() { System.Collections.ArrayList list = null; if (list?.Count > 0) { System.Console.WriteLine("Contains elements"); } A a = null; if (a?.B) { System.Console.WriteLine("Is initialized"); } } } The line if (list?.Count > 0) compiles perfectly which means that if list is null , the expression Count > 0 becomes false by default. However, the line if (a?.B) throws a compiler error saying I can't implicitly convert bool? to bool . Why is one different from the other? Heinzi list?.Count > 0 : Here you compare

I have a Visual Studio extensions that use Roslyn to get a project in current opened solution, compile it and run methods from it. The project can be modified by the programmer. I have successfully compiled a project in a Visual Studio extension from the current VisualStudioWorkspace. private static Assembly CompileAndLoad(Compilation compilation) { using (MemoryStream dllStream = new MemoryStream()) using (MemoryStream pdbStream = new MemoryStream()) { EmitResult result = compilation.Emit(dllStream, pdbStream); if (!result.Success) { IEnumerable<Diagnostic> failures = result.Diagnostics.Where

I'm currently trying to find everywhere in a solution where a specific enum is converted to a string, whether or not ToString() is explicitly called. (These are being replaced with a conversion using enum descriptions to improve obfuscation.) Example: I'd like to find code such as string str = "Value: " + SomeEnum.someValue; I've tried replacing the enum itself with a wrapper class containing implicit conversions to the enum type and overriding ToString() in the wrapper class, but when I try searching for uses of the ToString() override it gives me a list of places in the solution where

I am successfully getting dependencies between projects with Roslyn, and now I would like to get dependencies between classes, similar to the Code Map feature in Visual Studio Enterprise. Here is my code, the "?????" part is where I imagine I could get something. I am very new to the Roslyn API, though, and I don't know how to proceed from there on. Solution solution = MSBuildWorkspace.Create() .OpenSolutionAsync(Path.Combine(repoRootFolder, "MySolution.sln")) .Result; ProjectDependencyGraph projdeps = solution.GetProjectDependencyGraph(); Digraph graph = new Digraph(); foreach (ProjectId