1. Roslyn
   安装Microsoft.CodeAnalysis.CSharp.Scripting
   using Microsoft.CodeAnalysis.CSharp.Scripting;
   using Microsoft.CodeAnalysis.Scripting;

string code = "int result = 1 + 2; Console.WriteLine(result);";

 var options = ScriptOptions.Default.WithImports("System");

 var script = CSharpScript.Create(code, options);

 script.RunAsync().Wait();

留待后查，同时方便他人