C# 在内存中编译并创建内存程序集类型的实例

Question

如何将程序集加载到内存并使用其名称实例化其类型之一？

我要编译:

    /// <summary>
    /// Compiles the input string and saves it in memory
    /// </summary>
    /// <param name="source"></param>
    /// <param name="referencedAssemblies"></param>
    /// <returns></returns>
    public static CompilerResults LoadScriptsToMemory(string source, List<string> referencedAssemblies)
    {
        CompilerParameters parameters = new CompilerParameters();

        parameters.GenerateInMemory = true;
        parameters.GenerateExecutable = false;
        parameters.IncludeDebugInformation = false;

        //Add the required assemblies
        foreach (string reference in referencedAssemblies)
            parameters.ReferencedAssemblies.Add(reference);

        foreach (Assembly asm in AppDomain.CurrentDomain.GetAssemblies())
        {
            if (asm.Location.Contains("Microsoft.Xna") || asm.Location.Contains("Gibbo.Library") 
                || asm.Location.Contains("System"))
            {
                parameters.ReferencedAssemblies.Add(asm.Location);
            }
        }

        return Compile(parameters, source);
    }

    /// <summary>
    /// Compiles a source file with the given parameters and source
    /// </summary>
    /// <param name="parms"></param>
    /// <param name="source"></param>
    /// <returns></returns>
    private static CompilerResults Compile(CompilerParameters parameters, string source)
    {
        CodeDomProvider compiler = CSharpCodeProvider.CreateProvider("CSharp");
        return compiler.CompileAssemblyFromSource(parameters, source);
    }

然后，我尝试使用它来实例化上面代码在内存中生成的成员:

    var handler = Activator.CreateInstance(SceneManager.ScriptsAssembly.FullName, name);
    ObjectComponent oc = (ObjectComponent)handler.Unwrap();

SceneManager.ScriptsAssembly.FullName :> 我将编译后的程序集保存在 SceneManager.ScriptsAssembly 中。

name :> 我要加载的类型的名称

我遇到了这个错误:

Error loading scene: Could not load file or assembly 'nhvneezw, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.

程序集名称正确。可能是什么？

提前致谢。

Answer 1

根据 MSDN ( http://msdn.microsoft.com/en-US/library/system.codedom.compiler.compilerresults.compiledassembly.aspx )

The get accessor for the CompiledAssembly property calls the Load method to load the compiled assembly into the current application domain

您可以使用 Assembly.CreateInstance( http://msdn.microsoft.com/en-US/library/dex1ss7c.aspx ) 方法代替 Activator。如果您只需要通过类型名称创建实例，则必须获取 CompilerResults.CompiledAssembly 属性的值。