我正在使用VS2010，只要我添加该行“DataTable table = null;”，此处出现的错误就是代码：
public static object GetLambdaResult(string expression)
{
string className = "ExecuteLambda";
string methodName = "Run";
var providerDic = new Dictionary<string, string>() { { "CompilerVersion", "v4.0" } };
ICodeCompiler complier = (new CSharpCodeProvider(providerDic).CreateCompiler());
CompilerParameters paras = new CompilerParameters();
paras.GenerateExecutable = false;
paras.GenerateInMemory = true;
paras.ReferencedAssemblies.Add("System.dll");
paras.ReferencedAssemblies.Add("System.Data.dll");
StringBuilder classSource = new StringBuilder();
classSource.Append("using System; \n");
classSource.Append("using System.Data; \n");
classSource.Append("namespace AutoRun \n");
classSource.Append("{\n");
classSource.AppendFormat(" public class {0} \n", className);
classSource.Append(" {\n");
classSource.AppendFormat(" public static object {0}()\n", methodName);
classSource.Append(" {\n");
classSource.Append(" DataTable table= null;\n");
classSource.AppendFormat(" return {0};\n", expression);
classSource.Append(" }\n");
classSource.Append(" }\n");
classSource.Append("}");
CompilerResults result = complier.CompileAssemblyFromSource(paras, classSource.ToString());
Assembly assembly = result.CompiledAssembly;
object eval = assembly.CreateInstance("AutoRun." + className);
MethodInfo method = eval.GetType().GetMethod(methodName);
object reobj = method.Invoke(eval, null);
GC.Collect();
return reobj;
}
我得到一个FileNotFoundException， {“无法加载文件或程序集”文件：/ / / C：\ \ Users \ \ Administrator \ \ AppData \ \ Local \\ Temp \ \ 12azlzyr.dll“或其依赖项之一
。系统找不到指定的文件。 “：”file：/ / / C：\ \ Users \ \ Administrator \ \ AppData \ \ Local \\ Temp \ \ 12azlzyr.dll“
问题是 classSource.Append（“DataTable table = null; \ n”）; 和经过长时间的搜索，我找到了解决方案，需要添加xml参考 paras.ReferencedAssemblies.Add（ “system.xml.dll的”）;