Question

我试图使用一个临时AppDomain为外部库（引用CrystalDecisions）加载程序集，然后将其卸载，因此最终我将从内存中卸载CrystalDecisions dll。

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我正在使用Microsoft的ListDLLs来查看CrystalDecisions dll是否已卸载，并且看到在执行引用它的外部方法之前，这些dll没有被加载，并且一旦执行此方法，这些dll已加载但未从列表中卸载。

下面是用于创建AppDomain，加载程序集并执行该方法，最后将其卸载的代码。

        var setupInformation = AppDomain.CurrentDomain.SetupInformation;
        setupInformation.ConfigurationFile = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;
        var appDomainForCrystalExecutor = AppDomain.CreateDomain(string.Empty,
            new Evidence(AppDomain.CurrentDomain.Evidence), setupInformation);
        var utilsDllPath = Path.Combine(Directory.GetCurrentDirectory(), string.Format("{0}.dll", UtilsNamespace));

        var assembly = appDomainForCrystalExecutor.Load(new AssemblyName
        {
            CodeBase = utilsDllPath
        });

        var crExecutorType = assembly.GetType(string.Format("{0}.CRExecutor", UtilsNamespace));
        var methodInfo = crExecutorType.GetMethod("TryExecuteReport", new Type[] {typeof(CrystalReportVO)});
        object crExecutor;
        try
        {
            crExecutor = appDomainForCrystalExecutor
                .CreateInstanceFrom(crExecutorType.Assembly.Location, crExecutorType.FullName).Unwrap();
        }
        catch (Exception ex)
        {
            AppDomain.Unload(appDomainForCrystalExecutor);
            return;
        }

        Task.Run(() =>
        {
            var reportExecutedSuccessfuly = (bool) methodInfo.Invoke(crExecutor, new[] {crystalReportVo});

            AppDomain.Unload(appDomainForCrystalExecutor);
        });

ListDLL中卸载的dll的示例： 0x0000000028090000 0x163000 C：\ Program Files（x86）\ SAP BusinessObjects \ Crystal Reports for .NET Framework 4.0 \ Common \ SAP BusinessObjects Enterprise XI 4.0 \ win32_x86 \ crlov.dll

AppDomain.Unload不会摆脱依赖关系

0 个答案: