最近我使用vs2005做了一個addins在制作的過程中使用Assembly動態(tài)加載DLL，其他的地方需要實現(xiàn)刪除DLL的操作，因此需要能夠?qū)崿F(xiàn)卸載Assembly動態(tài)加載DLL，不知道各位有沒有什么好的解決方案。大多數(shù)都說用AppDomain來實現(xiàn)，試驗過很多，都存在這樣或者那樣的問題，大家有沒有一個比較完美的解決方案啊。
public Assembly LoadAssembly(string filePath) { Assembly asm = null; if (this.copyToMem) { //先將插件拷貝到內(nèi)存緩沖 byte[] addinStream = null; if (FileHelper.ReadFileToBuff(filePath, out addinStream)) { asm = Assembly.Load(addinStream); //加載內(nèi)存中的Dll } } else { asm = Assembly.LoadFrom(filePath); } return asm; }
?
使用過上面的這種方式加載DLL，可是因為需要加載附加的DLL，還是失敗。
1 回答
偶然的你
TA貢獻(xiàn)1841條經(jīng)驗 獲得超3個贊
請參考如下代碼片段：
?public DynamicAssembly()
??????? {
??????????? PermissionSet perSet = new System.Security.PermissionSet(System.Security.Permissions.PermissionState.Unrestricted);
??????????? AppDomainSetup objSetup = new AppDomainSetup();
??????????? objSetup.ApplicationBase = AppDomain.CurrentDomain.BaseDirectory;
??????????? _objAppDomain = AppDomain.CreateDomain("MyAppDomain", null, objSetup, perSet, null);
??????? }
?
?public void InitCall()
??????? {
??????????? string strErrorMsg = string.Empty;
??????????? RemoteLoaderFactory factory = (RemoteLoaderFactory)_objAppDomain.CreateInstance("UIT.DynamicExpression.RemoteAccess", "UIT.DynamicExpression.RemoteAccess.RemoteLoaderFactory").Unwrap();
??????????? // with help of factory, create a real 'LiveClass' instance
??????????? _object = factory.Create("UIT.DynamicalExpressionBin.dll", "UIT.DynamicExpression.Eval", null);
??????????? if (_object == null)
??????????? {
??????????????? strErrorMsg = "Error: " + "Couldn't load class.";
??????????????? Trace.WriteLine(strErrorMsg);
??????????? }
??????? }
其中RemoteFactory類代碼如下：
?public class RemoteLoaderFactory : MarshalByRefObject
??? {
??????? private const BindingFlags bfi = BindingFlags.Instance | BindingFlags.Public | BindingFlags.CreateInstance;
??????? public RemoteLoaderFactory() { }
??????? public IRemoteInterface Create(string assemblyFile, string typeName, object[] constructArgs)
??????? {
??????????? return (IRemoteInterface)Activator.CreateInstanceFrom(
???????????????????? assemblyFile, typeName, false, bfi, null, constructArgs,
???????????????????? null, null, null).Unwrap();
??????? }
??? }
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