配置参照DLL文件路径的方法

   众所周知,.NET程序所参照的DLL按照所有的文件路径划分,可分为两类:

• 全局DLL(注册在GAC中)
• 私有DLL(Win程序和exe文件在同一文件夹下,Web程序在顶层web.config同级的Bin文件夹下)

  对于私有的DLL,当其数目众多时,由于没有分类,会显得比较凌乱;如果将其分类,分别放到对应的子目录,则会清爽许多.

  问题是,如何解决应用程序对DLL的查找路径问题呢?答案是在配置文件中添加如下配置项:

DLL路径配置

<? xml version="1.0"  ?>
< configuration
     xmlns:asm ="urn:schemas-microsoft-com:asm.v1" >
   < runtime >
     < asm:assemblyBinding >
       < asm:probing  privatePath ="shared;common"    />
     </ asm:assemblyBinding >
   </ runtime >
</ configuration >

  其中privatePath是相对于 config文件的相对路径,多个文件夹以分号(;)分隔.

  举微软的Enterprise Library 4.1作为例子,其默认为:

  调整后为:

 

 

附:config文件

<? xml version="1.0" encoding="utf-8"  ?>
< configuration >
     < runtime >
         < assemblyBinding  xmlns ="urn:schemas-microsoft-com:asm.v1" >
             < probing  privatePath ="Caching;Common;Configuration;Data;ExceptionHandling;Logging;PolicyInjection;Security;Unity;Validation"    />     
             < dependentAssembly >
                 < assemblyIdentity  name ="Microsoft.Data.ConnectionUI"
                    publicKeyToken ="b03f5f7f11d50a3a"
                    culture ="neutral"   />
                 < codeBase  version ="8.0.0.0"
          href ="file:///C:/Program%20Files/Microsoft%20Visual%20Studio%208/Common7/IDE/Microsoft.Data.ConnectionUI.dll"   />
             </ dependentAssembly >
            
             < dependentAssembly >
                 < assemblyIdentity  name ="Microsoft.Data.ConnectionUI.Dialog"
                    publicKeyToken ="b03f5f7f11d50a3a"
                    culture ="neutral"   />
                 < codeBase  version ="8.0.0.0"
          href ="file:///C:/Program%20Files/Microsoft%20Visual%20Studio%208/Common7/IDE/Microsoft.Data.ConnectionUI.Dialog.dll"   />
             </ dependentAssembly >
            
         </ assemblyBinding >
     </ runtime >
</ configuration >

 

  更高级的应用,如版本重定向,请参考:.NET CLR Components—Resolving Names to Locations