roslyn

因为升级ABP.NET，导致原来老项目的System.Collections.Immutable引用报错。 步骤： 1.将引用的System.Collections.Immutable全部换成\packages\System.Collections.Immutable.1.2.0\lib\portable-net45+win8+wp8+wpa81下的，而不是\packages\Microsoft.Net.Compilers.1.3.2\tools下的（不知道为什么，明明引用的是System.Collections.Immutable.1.2.0文件夹下的，但查看属性显示的路径总是Microsoft.Net.Compilers.1.3.2文件夹下，可以先把Microsoft.Net.Compilers.1.3.2文件夹放到别的地方，之后再看需不需要移回来）； 2.这时候报的错误会变成找不到\roslyn\csc.exe，出现这个问题可能是因为VS没有把Roslyn的编译器正确地放到网站Bin文件夹的roslyn文件夹中，将\packages\Microsoft.Net.Compilers.1.3.2\tools\bin\roslyn下的文件都复制到l\bin\roslyn下面； 可以参考： https://www.cnblogs.com/lizhanglong/p/6894361

I'd like to bypass some classical assembly scanning techniques in a framework I am developing. So, say I've defined the following contract: public interface IModule { } This exists in say Contracts.dll . Now, if I want to discover all implementations of this interface, we would probably do something similar to the following: public IEnumerable<IModule> DiscoverModules() { var contractType = typeof(IModule); var assemblies = AppDomain.Current.GetAssemblies() // Bad but will do var types = assemblies .SelectMany(a => a.GetExportedTypes) .Where(t => contractType.IsAssignableFrom(t)) .ToList();

I've got a code-snippet that compiles a script with the script engine and I retreiv the assembly as a byte array. Now I want to load this Assembly in a Sandbox, this is what I've got: Assembly _dynamicAssembly; ScriptEngine _engine; Session _session; public string Execute(string code) { // Setup sandbox var e = new Evidence(); e.AddHostEvidence(new Zone(SecurityZone.Internet)); var ps = SecurityManager.GetStandardSandbox(e); var setup = new AppDomainSetup { ApplicationBase = Environment.CurrentDirectory }; var domain = AppDomain.CreateDomain("Sandbox", AppDomain.CurrentDomain.Evidence, setup,

I've been looking at Visual Studio 14 CTP along with C# 6.0 and playing with the null-propagation operator. However, I couldn't find why the following code does not compile. The features are not yet documented so I'm not sure whether this is a bug or extension methods simply are not supported with the ?. operator and the error message is misleading. class C { public object Get() { return null; } } class CC { } static class CCExtensions { public static object Get(this CC c) { return null; } } class Program { static void Main(string[] args) { C c = null; var cr = c?.Get(); //this compiles (Get

F# has a REPL (read–eval–print loop) F# Interactive, C:\Program Files (x86)\Microsoft F#\v4.0\Fsi.exe . I understand C# now has its own interactive REPL, as released with Roslyn . How do I open outside Visual Studio? Where is csi.exe ? C# Interactive window and csi.exe REPL were added to Visual Studio 2015 Update 1 (emphasis mine): Introducing Interactive The Interactive Window is back! The C# Interactive Window returns in Visual Studio 2015 Update 1 along with a couple other interactive treats: C# Interactive . The C# Interactive window is essentially a read-eval-print-loop (REPL) that allows

The ObjectPool is a type used in the Roslyn C# compiler to reuse frequently used objects which would normally get new'ed up and garbage collected very often. This reduces the amount and size of garbage collection operations which have to happen. The Roslyn compiler seems to have a few separate pools of objects and each pool has a different size. I want to know why there are so many implementations, what the preferred implementation is and why they picked a pool size of 20, 100 or 128. 1 - SharedPools - Stores a pool of 20 objects or 100 if the BigDefault is used. This one is also strange in

I'm building a set of code diagnostics using Roslyn (in VS2015 Preview). Ideally, I'd like any errors they produce to act as persistent errors, just as if I were violating a normal language rule. There are a bunch of options, but I'm having a hard time getting any of them to work consistently. I've managed to implement a rudimentary syntax node action, i.e. one registered with context.RegisterSyntaxNodeAction(AnalyzeSyntaxNode, SyntaxKind.InvocationExpression); in the Initialize method of my diagnostic class. Lo and behold, when I open up a file which violates this diagnostic (while running

While trying out the Visual Studio 2015 RC, I received a run-time error on previously working code. Given the lambda (x => x.CustomerStatusID == CustomerStatuses.Active) which was passed to a function as an Expression<> , the debugger shows a difference in the expression tree. Formerly it compiled as this: .Lambda #Lambda1<System.Func`2[Services.DataClasses.CustomerDC,System.Boolean]>(Services.DataClasses.CustomerDC $x) { (System.Int32)$x.CustomerStatusID == 0 } But in C# 6.0 it now compiles as .Lambda #Lambda1<System.Func`2[Services.DataClasses.CustomerDC,System.Boolean]>(Services.DataClasses