在动态编译的代码中缺少程序集引用

Question

感谢有关此问题的第一篇帖子的消息.我会做一个转贴,并试着这次更清楚.我想这可能是一个微不足道的问题,但我真的很困难,需要一些帮助.这是我第一次在这里发帖.

using System;
using System.CodeDom.Compiler;
using System.Reflection;
using Microsoft.CSharp;
namespace DynamicCode
{
public class DynaCore
{
string WorkingCode = 
    "using System;"+
    "using System.Collections.Generic;"+
    "namespace DynaCore"+
    "{"+
    "   public class DynaCore"+
    "   {"+
    "       static public string DynamicResult()"+
    "       {"+
    "           return \"I'm compiled\";"+
    "       }"+
    "   }"+
    "}";


string PredicateTemplCode = 
    "using System;"+
    "using System.Linq;"+
    "using System.Collections.Generic;"+
    "namespace DynaCore"+
    "{"+
    "   public class DynaCore"+
    "   {"+
    "       static public Func<{1}, bool> DynamicResult()"+
    "       {"+
    "           return new Func<{1}, bool>({2});"+
    "       }"+
    "   }"+
    "}";

public DynaCore()
{
    string compiledString = WorkingCompilation(WorkingCode);
    Func<bool, bool> compiladePredicate = NotWorkingCompilation<bool>(PredicateTemplCode, "(o)=> true");
}

string WorkingCompilation(string code)
{
    var cParams = new CompilerParameters();
    cParams.GenerateInMemory = true;
    cParams.TreatWarningsAsErrors = false;
    cParams.GenerateExecutable = false;
    cParams.CompilerOptions = "/optimize /target:library";

    var curAss = Assembly.GetExecutingAssembly();

    cParams.ReferencedAssemblies.Add("System.dll");
    cParams.ReferencedAssemblies.Add("mscorlib.dll");
    cParams.ReferencedAssemblies.Add("System.dll");
    cParams.ReferencedAssemblies.Add("System.Data.dll");
    cParams.ReferencedAssemblies.Add(curAss.Location);

    var provider = new CSharpCodeProvider();

    var compalerResult = provider.CompileAssemblyFromSource(cParams, code);

    if (compalerResult.Errors.HasErrors)
    {
        var complieError = "";
        foreach (CompilerError ce in compalerResult.Errors)
            complieError += ce + " ";

        throw new Exception(complieError.Trim());
    }

    Module module = compalerResult.CompiledAssembly.GetModules()[0];
    Type mt = null;
    MethodInfo methInfo = null;

    return (string)module.GetType("DynaCore.DynaCore").GetMethod("DynamicResult").Invoke(null, null);
}


Func<T, bool> NotWorkingCompilation<T>(string code, string predicateString)
{
    var cParams = new CompilerParameters();
    cParams.GenerateInMemory = true;
    cParams.TreatWarningsAsErrors = false;
    cParams.GenerateExecutable = false;
    cParams.CompilerOptions = "/optimize /target:library";

    var curAss = Assembly.GetExecutingAssembly();

    cParams.ReferencedAssemblies.Add("System.dll");
    cParams.ReferencedAssemblies.Add("mscorlib.dll");
    cParams.ReferencedAssemblies.Add("System.dll");
    cParams.ReferencedAssemblies.Add("System.Data.dll");
    cParams.ReferencedAssemblies.Add("System.Core.dll");
    cParams.ReferencedAssemblies.Add(curAss.Location);

    var provider = new CSharpCodeProvider();

    var codeToRun = code.Replace("{1}", typeof(T).Name).Replace("{2}", predicateString);
    var compalerResult = provider.CompileAssemblyFromSource(cParams, codeToRun);

    if (compalerResult.Errors.HasErrors)
    {
        var complieError = "";
        foreach (CompilerError ce in compalerResult.Errors)
            complieError += ce + " ";

        throw new Exception(complieError.Trim());
    }

    Module module = compalerResult.CompiledAssembly.GetModules()[0];
    Type mt = null;
    MethodInfo methInfo = null;

    return (Func<T, bool>)module.GetType("DynaCore.DynaCore").GetMethod("DynamicResult").Invoke(null, null);
}
}
}

问题是,当我引用System.Core.dll在ReferencedAssemblies.Add("System.Core.dll") ,它给了我一个编译器错误:

错误CS0006:找不到元数据文件'System.Core.dll'

我正在使用v3.5和VS 2008.

Answer 1

感谢所有的答案!

事实证明,CSharpCodeProvider默认为2.0版,不支持泛型或linq.以下解决了这个问题:

var provider = new CSharpCodeProvider(
    new Dictionary<String, String>{{ "CompilerVersion","v3.5" }});

Answer 2

我以为我会更新这个帖子,因为它从来没有得到适当的回答.我刚刚遇到了同样的问题(CS0006),必须包含一个WPF目录中的WPF库,最后用以下内容修复它:

            string ver = string.Format("{0}.{1}.{2}", Environment.Version.Major, Environment.Version.MajorRevision, Environment.Version.Build);
            string exWpfDir = string.Format(@"C:\WINDOWS\Microsoft.NET\Framework\v{0}\WPF", ver);
            string exDir = string.Format(@"C:\WINDOWS\Microsoft.NET\Framework\v{0}", ver);

            CSharpCodeProvider provider = new CSharpCodeProvider();
            ICodeCompiler compiler = provider.CreateCompiler();
            CompilerParameters compilerparams = new CompilerParameters();
            compilerparams.GenerateExecutable = false;
            compilerparams.GenerateInMemory = true;
            compilerparams.IncludeDebugInformation = false;
            compilerparams.TreatWarningsAsErrors = false;
            compilerparams.CompilerOptions = string.Format("/lib:{0}", exWpfDir);
            compilerparams.CompilerOptions = string.Format("/lib:{0}", exDir);

Answer 3

结果代码

using System;
using System.Linq;
using System.Collections.Generic;
namespace DynaCore
{
    public class DynaCore
    {
        static public Func<Boolean, bool> Main()
        {
            Func<Boolean, bool> retur = (o) => true;
        }
    }
}

粘贴到新文件中时不会自行编译。第一个编译错误是

“DynaCore.DynaCore.Main()”：并非所有代码路径都会返回值

首先，您需要生成粘贴到空 .cs 文件中时进行编译的代码。

第一个明显的事情是将 func 语句修复为类似的内容

return new Func<Boolean, bool>(o => true);

编辑：
并且不要调用该方法Main。