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From: mahesh_m
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[18Nov05] How Do I
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From:
mahesh_m
18 November 2005
How Do I...
_________________________________________________________________
How Do I Use Assembly Version Policy?
A primary goal of the deployment system in the .NET Framework is to eliminate
conflicts between applications caused by shared components and shared states
(or DLL conflicts). A key solution to this problem is a robust versioning
system. The .NET Framework records information about an application's
dependencies in the assembly manifest. This dependency information includes a
version number that is used at runtime to load the proper version of a
dependency.
By default, the common language runtime will load the version of a dependency
that is specified in the manifest. This is preferred in the majority of
scenarios. However, there are cases where running an application with a
different version of a dependency can be useful. In order to accomplish this,
version policies can be included in an application's configuration file. For
example, the following XML code fragment redirects references to version
5.0.0.0 of a shared assembly called "CalcR" up to version 6.0.0.0 of that
assembly:
<configuration>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="calcR"
publicKeyToken="a1690a5ea44bab32"
culture=""/>
<bindingRedirect oldVersion="5.0.0.0"
newVersion="6.0.0.0
"/>
</dependentAssembly>
</assemblyBinding>
</runtime>
</configuration>
In addition to policies specified at the application level, the .NET Framework
also provides two other policy levels: publisher and administrator. A Publisher
policy statement describes the compatibility of an assembly issued by the
publisher of that shared assembly. Administrator level policy is a machine
version policy that affects all applications. Administrator policy is created
using the same XML syntax as application level policy. The administrator policy
file is called
machine.config, and resides in the common language runtime install directory.
The three policy levels are evaluated in the following order:
Application Policy
Publisher Policy
Administrator Policy
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You can also post your questions which you think are of the form "How Do I...?"
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--
--
Thank You,
Regards,
m_mahesh
Mahesh Mitkari
INETA Volunteer
Asst. Manager (Pune .net User group)
Manager (PUG Student)
09890555485 ([EMAIL PROTECTED])
http://mmahesh.blogspot.com
_________________________________________________________________
Note: The information Published under this section is ONLY FOR INFORMATIVE
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