如何检测另一个程序集是否可用于我的应用程序 [英] How to detect if another assembly is available to my application or not

问题描述

我有一个命令行winforms可执行文件，调用Windows winforms应用程序。

I have a command line winforms executable that calls into a Windows winforms application.

部署应用程序时，偶尔会将Windows exe与命令行exe包含在一起，导致错误。

Occassionally Ops forget to include the windows exe with the command line exe when deploying the application, leading to an error.

如何优雅地处理并显示一个很好的错误，而不是：

How do I gracefully handle that and show a nice error instead of:

未处理的异常：
System.IO.FileNotFoundException：可以
无法加载文件或屁股，MyappFoo，
版本= 5.1.4303.0，Culture = neutral，
PublicKeyToken = null'或其
依赖关系之一。系统找不到
指定的文件。文件名：
'MyAppFoo，Version = 5.1.4303.0，
Culture = neutral，PublicKeyToken = null'
在AppFoo.Program.Main（String [] args）

Unhandled Exception: System.IO.FileNotFoundException: Could not load file or ass embly 'MyappFoo, Version=5.1.4303.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified. File name: 'MyAppFoo, Version=5.1.4303.0, Culture=neutral, PublicKeyToken=null' at AppFoo.Program.Main(String[] args)

WRN：装配绑定日志记录是
关闭。要启用程序集绑定
失败日志记录，请将注册表
值[HKLM\Software\M
icrosoft\Fusion！EnableLog]（DWORD）设置为
1.注意：与组装绑定有关的一些性能损失
失败。要关闭此功能
，请删除注册表值
[HKLM\Software\Microsoft\Fus
ion！EnableLog]。

WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\M icrosoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure lo gging. To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fus ion!EnableLog].

编辑：

为了澄清一下，如何截取FileNotFoundExcception，当

To clarify a bit, how do I intercept the FileNotFoundExcception, when

static int Main(string[] args)
{
   try
   {
      Console.WriteLine"MyPhooApp Command Line (c) PhooSoft 2008");
   }
   catch (System.IO.FileNotFoundException fe)
   {
      Console.WriteLine("Unable to find foo.exe");
      return -1;
   }
}

也不会写入。

推荐答案

您可以使用.NET 2.0中引入的Reflection-Only加载功能。这样，您可以加载程序集进行检查，而无需将其加载到应用程序域中。

You can use the Reflection-Only loading capability introduced in .NET 2.0. This allows you to load an assembly for inspection without actually loading it into the appdomain.

Assembly.ReflectionOnlyLoad

Assembly.ReflectionOnlyLoadFrom

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