C#学习教程:如何从GAC加载特定版本的程序集分享


如何从GAC加载特定版本的程序集

出于测试目的,我喜欢从GAC加载特定版本的DLL程序集。 但是,我的程序总是加载最新版本 – 我认为由策略程序集驱动。

var dll = Assembly.Load("Oracle.ManagedDataAccess, Version=4.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342"); Console.WriteLine(dll.ToString()); 

输出:

 Oracle.ManagedDataAccess, Version=4.122.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342 

即使我以强名称指定版本“4.121.1.0”,它也会加载版本“4.122.1.0”。 有没有办法强制使用特定版本?

来自fuslogvw.exe中请求的fuslogvw.exe结果:

 *** Assembly Binder Log Entry (29.06.2017 @ 11:24:15) *** The operation was successful. Bind result: hr = 0x0. The operation completed successfully. Assembly manager loaded from: C:WindowsMicrosoft.NETFramework64v4.0.30319clr.dll Running under executable C:ProgramsToolsConnectionTester_x64.exe --- A detailed error log follows. === Pre-bind state information === LOG: DisplayName = Oracle.ManagedDataAccess, Version=4.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342 (Fully-specified) LOG: Appbase = file:///C:/Programs/Tools/ LOG: Initial PrivatePath = NULL LOG: Dynamic Base = NULL LOG: Cache Base = NULL LOG: AppName = ConnectionTester_x64.exe Calling assembly : ConnectionTester_x64, Version=1.0.353.0, Culture=neutral, PublicKeyToken=null. === LOG: This bind starts in default load context. LOG: No application configuration file found. LOG: Using host configuration file: LOG: Using machine configuration file from C:WindowsMicrosoft.NETFramework64v4.0.30319configmachine.config. LOG: Publisher policy file is found at C:WindowsMicrosoft.NetassemblyGAC_MSILPolicy.4.121.Oracle.ManagedDataAccessv4.0_4.122.1.0__89b483f429c47342Policy.4.121.Oracle.ManagedDataAccess.config. LOG: Publisher policy file redirect is found: 4.121.1.0 redirected to 4.122.1.0. LOG: ProcessorArchitecture is locked to MSIL. LOG: Post-policy reference: Oracle.ManagedDataAccess, Version=4.122.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342, processorArchitecture=MSIL LOG: Found assembly by looking in the GAC. LOG: Binding succeeds. Returns assembly from C:WindowsMicrosoft.NetassemblyGAC_MSILOracle.ManagedDataAccessv4.0_4.122.1.0__89b483f429c47342Oracle.ManagedDataAccess.dll. LOG: Assembly is loaded in default load context. 

它看起来像预期的那样说道

找到发布者策略文件重定向:4.121.1.0重定向到4.122.1.0。

但我喜欢绕过它。

GAC中安装了4.121.1.0版:

 C:Program Files (x86)Microsoft Visual Studio 11.0>gacutil /l Oracle.ManagedDataAccess Microsoft (R) .NET Global Assembly Cache Utility. Version 4.0.30319.18020 Copyright (c) Microsoft Corporation. All rights reserved. The Global Assembly Cache contains the following assemblies: Oracle.ManagedDataAccess, Version=4.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342, processorArchitecture=MSIL Oracle.ManagedDataAccess, Version=4.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342, processorArchitecture=MSIL Oracle.ManagedDataAccess, Version=4.122.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342, processorArchitecture=MSIL Number of items = 3 C:Program Files (x86)Microsoft Visual Studio 11.0> 

你可能不得不绕过发布者政策。 将应用程序配置文件添加到dependentAssembly

  

更多信息在这里和这里

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