我有一些非常简单的代码来生成程序集并在包含的类型上调用方法。该方法被调用并正确运行,但是当我使用Reflector查看生成的程序集时,我看不到该类型。
以下是示例代码:
namespace ConsoleApplication2
{
class Proggy
{
public static void Main(string[] args)
{
var ab = AppDomain.CurrentDomain.DefineDynamicAssembly(
new AssemblyName() { Name = "MyAssembly" },
AssemblyBuilderAccess.RunAndSave);
var module = ab.DefineDynamicModule(ab.GetName().Name);
var typeBuilder = module.DefineType("MyType");
var ctr = typeBuilder.DefineConstructor(MethodAttributes.Public,
CallingConventions.Standard, Type.EmptyTypes);
var ilgc = ctr.GetILGenerator();
ilgc.Emit(OpCodes.Ldarg_0);
ilgc.Emit(OpCodes.Call, typeof(object).GetConstructor(Type.EmptyTypes));
ilgc.Emit(OpCodes.Ret);
var method = typeBuilder.DefineMethod("MyMethod", MethodAttributes.Public,
typeof(int), new[] { typeof(string) });
var ilg = method.GetILGenerator();
ilg.Emit(OpCodes.Ldarg_1);
ilg.EmitCall(OpCodes.Callvirt, typeof(string).GetProperty("Length").GetGetMethod(),
null);
ilg.Emit(OpCodes.Ret);
var type = typeBuilder.CreateType();
ab.Save("mytestasm.dll");
var inst = Activator.CreateInstance(type);
Console.WriteLine(type.InvokeMember("MyMethod", BindingFlags.InvokeMethod, null, inst,
new[] { "MyTestString" }));
Console.ReadLine();
}
}
}
这里是Reflector的相应反汇编:
.assembly MyAssembly
{
.ver 0:0:0:0
.hash algorithm 0x00008004
}
.module RefEmit_OnDiskManifestModule
// MVID: {0B944140-58D9-430E-A867-DE0AD0A8701F}
// Target Runtime Version: v2.0.50727
......和......
{
.class private auto ansi <Module>
{
}
}
任何人都可以帮我正确保存装配吗?
答案 0 :(得分:5)
诀窍是在AssemblyBuilder实例上使用DefineDynamicModule方法的“persistable module”版本。也就是说,而不是:
var module = ab.DefineDynamicModule(ab.GetName().Name);
使用类似的东西:
var module = ab.DefineDynamicModule(ab.GetName().Name, ab.GetName().Name + ".mod");
此后保存后相应的模块会出现在组件中。
答案 1 :(得分:-2)
我不确定为什么没有添加类型。
另一种方法是通过传入包含类代码的字符串来动态创建代码。我认为这比上面这样做容易一些,因为你可以使用字符串构建器和在工作室中测试来构建代码。
以下是我用来生成dll的代码:
print(" Microsoft.CSharp.CSharpCodeProvider objCodeProvider = new Microsoft.CSharp.CSharpCodeProvider();
string strCode = "using System;" + Environment.NewLine + "using System.Data;" + Environment.NewLine + "using DC.Common;" + Environment.NewLine + "" + Environment.NewLine + "using System.Data.SqlClient;" + Environment.NewLine + "using System.Configuration;" + Environment.NewLine + "" + Environment.NewLine + Environment.NewLine + BaseClassFile + Environment.NewLine + BaseManagerFile + Environment.NewLine;
string strSourceModule = BuilderSettings.ExportDir + "/" + BuilderSettings.ProjectName + "/" + "BaseFile.cs";
FileHelper.WriteAllText(strSourceModule, strCode);
FileHelper.WriteAllText(BuilderSettings.ExportDir + "/" + BuilderSettings.ProjectName + "/" + "test.txt", strCode);
ICodeCompiler icc = objCodeProvider.CreateCompiler();
string OutputPath = BuilderSettings.ExportDir + "/" + BuilderSettings.ProjectName + "/" + BuilderSettings.ProjectName + ".dll";
CompilerParameters parameters = new CompilerParameters();
CompilerResults results;
parameters.GenerateExecutable = false;
parameters.OutputAssembly = OutputPath;
parameters.GenerateInMemory = false;
parameters.IncludeDebugInformation = false;
//Add required assemblies
DynamicLinkLibraries.Clear();
//User defined
DynamicLinkLibraries.Add(@"d:\wwwroot\\DC.Common\bin\Debug\DC.Common.dll");
//System
DynamicLinkLibraries.Add("System.dll");
DynamicLinkLibraries.Add("System.Data.dll");
DynamicLinkLibraries.Add("mscorlib.dll");
DynamicLinkLibraries.Add("System.xml.dll");
DynamicLinkLibraries.Add("System.web.dll");
DynamicLinkLibraries.Add("System.configuration.dll");
//Any dynamic assembly adding must be done here
foreach (string strLibrary in DynamicLinkLibraries)
{
parameters.ReferencedAssemblies.Add(strLibrary);
}
results = icc.CompileAssemblyFromSource(parameters, strCode);
if (results.Errors.Count > 0)
{
//report any compilation errors
string strErrors = "Compilation failed:" + Environment.NewLine;
foreach (CompilerError oError in results.Errors)
{
strErrors = strErrors + "Line number " + oError.Line + ", Error Number: " + oError.ErrorNumber + ", '" + oError.ErrorText + ";";
}
throw new Exception("Error in CompileSourceCode(): " + Environment.NewLine + strErrors);
}
objCodeProvider = null;
icc = null;
parameters = null;");