如何使用引用到另一个程序集的加载的 DLLS 程序集的方法? [英] how to use loaded DLLS assembly' methods which is referenced to another assembly?
问题描述
我有 2 个程序集.我将 classlib1 添加到 classLib2 引用中.像那样:
i have 2 assemblies. i added classlib1 into classLib2 references. like that:
我就是这么用的:
namespace ClassLibrary2
{
public class Class1
{
public Class1()
{
}
public int GetSum(int a , int b)
{
try
{
ClassLibrary1.Class1 ctx = new ClassLibrary1.Class1();
return ctx.Sum(a, b);
}
catch
{
return -1;
}
}
}
}
我还想通过使用 AppDomain 动态加载(class1lib 和 Class2Lib)另一个 C# 项目.
Also i want to load (class1lib and Class2Lib) another C# project dynamically by using AppDomain.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Reflection;
using System.Collections;
using System.Reflection.Emit;命名空间 WcfService3{公共部分类默认值:System.Web.UI.Page{公共静态 ArrayList arryFiles { 获取；放;}protected void Page_Load(object sender, EventArgs e){
namespace WcfService3 { public partial class Default : System.Web.UI.Page { public static ArrayList arryFiles { get; set; } protected void Page_Load(object sender, EventArgs e) {
}
protected void Button1_Click(object sender, EventArgs e)
{
arryFiles = new ArrayList();
List<byte[]> binaryList = new List<byte[]>();
// string fileName = @"S:\Source\Yusuf.Karatoprak\plugin\ClassLibrary1.dll";
DirSearch(@"S:\Source\Yusuf.Karatoprak\plugin");
foreach (var filePath in arryFiles)
{
FileStream fileStream = File.OpenRead(filePath.ToString());
byte[] buffer = new byte[fileStream.Length];
fileStream.Read(buffer, 0, Convert.ToInt32(fileStream.Length));
fileStream.Dispose();
binaryList.Add(buffer);
//Assembly[] assBefore = AppDomain.CurrentDomain.GetAssemblies();
//AppDomain.CurrentDomain.Load(buffer);
//Assembly[] assAfter = AppDomain.CurrentDomain.GetAssemblies();
//Type t = Type.GetType("ClassLibrary1.Class1,ClassLibrary1");
}
new AssemblyLoader().LoadAndCall(binaryList);
}
static void DirSearch(string sDir)
{
try
{
foreach (string f in Directory.GetFiles(sDir, "*.dll"))
{
if (!arryFiles.Contains(f))
arryFiles.Add(f);
}
foreach (string d in Directory.GetDirectories(sDir))
{
if (d != null)
{
foreach (string f in Directory.GetFiles(d, "*.dll"))
{
if (!arryFiles.Contains(f))
arryFiles.Add(f);
}
DirSearch(d);
}
else
break;
}
}
catch (System.Exception excpt)
{
throw new Exception(excpt.Message);
}
}
}
public class AssemblyLoader : MarshalByRefObject
{
public void LoadAndCall(List<byte[]> binaryList)
{
Assembly loadedAssembly=null;
Assembly[] assBefore = AppDomain.CurrentDomain.GetAssemblies();
foreach (byte[] binary in binaryList)
{
loadedAssembly = AppDomain.CurrentDomain.Load(binary);
}
Assembly[] assAfter = AppDomain.CurrentDomain.GetAssemblies();
object[] tt = { 3, 6 };
Type type = loadedAssembly.GetType("ClassLibrary2.Class1");
object loaded = loadedAssembly.CreateInstance("ClassLibrary2.Class1", true, BindingFlags.Instance | BindingFlags.Public | BindingFlags.CreateInstance, null, new object[] { }, null, null);
// object obj = Activator.CreateInstance(type);
ObjectCreateMethod inv = new ObjectCreateMethod(type); //Specify Type
Object obj = inv.CreateInstance();
MethodInfo minfo = type.GetMethod("GetSum", BindingFlags.Instance | BindingFlags.Public | BindingFlags.CreateInstance);
int x = (int)minfo.Invoke(obj, new Object[] { 3, 6 });
Console.WriteLine(x);
}
}
public class ObjectCreateMethod
{
delegate object MethodInvoker();
MethodInvoker methodHandler = null;
public ObjectCreateMethod(Type type)
{
CreateMethod(type.GetConstructor(Type.EmptyTypes));
}
public ObjectCreateMethod(ConstructorInfo target)
{
CreateMethod(target);
}
void CreateMethod(ConstructorInfo target)
{
DynamicMethod dynamic = new DynamicMethod(string.Empty,
typeof(object),
new Type[0],
target.DeclaringType);
ILGenerator il = dynamic.GetILGenerator();
il.DeclareLocal(target.DeclaringType);
il.Emit(OpCodes.Newobj, target);
il.Emit(OpCodes.Stloc_0);
il.Emit(OpCodes.Ldloc_0);
il.Emit(OpCodes.Ret);
methodHandler = (MethodInvoker)dynamic.CreateDelegate(typeof(MethodInvoker));
}
public object CreateInstance()
{
return methodHandler();
}
}
}
为什么不能加载和异常错误返回给我:
Why can not load and Exception error return to me:
看内部异常:无法加载文件或程序集 'ClassLibrary1 但我加载了 Classlib2 abd Classlib1 .class2 取决于 classlib1 如何使用 classlib1 方法我想在加载程序集后使用 GetSum(int a , int b) 方法:
Look inner exception: Could not load file or assembly 'ClassLibrary1 But i loaded Classlib2 abd Classlib1 . class2 depends on classlib1 how to use classlib1 method i want to use GetSum(int a , int b) method after load assemblies:
推荐答案
发现这个有点类似的问题.处理解决事件似乎是最后的努力.如果您没有选择，请尝试一下.替换为您的 S:\Source\Yusuf.Karatoprak\plugin.您还可以尝试处理 AppDomain.AssemblyLoad 事件, 查看从您的二进制文件中加载的内容.
Found this somewhat similar question. Handling the resolve event seems to be a last ditch effort. Just try it if you run out of options. Replace with your S:\Source\Yusuf.Karatoprak\plugin. You can also try handling the AppDomain.AssemblyLoad event, to see what was loaded from your binaries.
@programmerist，干杯！
@programmerist, cheers!
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