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Updating the Validation Application Block

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This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This page may contain URLs that were valid when originally published, but now link to sites or pages that no longer exist.

The latest Enterprise Library information can be found at the Enterprise Library site.

If an upgraded version of the Validation Application Block becomes available, you can install the new version and have all applications use the updated assembly. However, if the new version introduces compatibility problems for certain applications, you can install the new version in the global assembly cache and configure some applications to use it, while others continue to use the earlier version.

Updating Private Assemblies

If the Validation Application Block assembly has been deployed as a private assembly, you can deploy the upgrade by replacing the earlier version of the DLL in the application folder hierarchy with the new one.

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You should keep a copy of the earlier version so that if you experience any compatibility issues with the new assembly, you can revert to the earlier version.

Updating Shared Assemblies

The easiest way to upgrade the Validation Application Block assembly in a shared configuration is to install the updated DLL in the global assembly cache. By default, the common language runtime tries to load the assembly that has the latest build and revision numbers but the same major and minor version numbers as the assembly the application was built with. Therefore, if the major and minor version numbers have not changed, adding the later version to the global assembly cache automatically updates all applications that refer to the Validation Application Block assembly.

If the major or minor version numbers are incremented, or if the new version causes compatibility problems with existing applications, you can override the default version policy. To specify that a particular version of an assembly should be used, edit the application's configuration file (for individual applications) or the machine policy file. Alternatively, you can distribute the new version of the assembly with a publisher policy file to redirect assembly requests to the new version.

Retired Content

This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This page may contain URLs that were valid when originally published, but now link to sites or pages that no longer exist.

The latest Enterprise Library information can be found at the Enterprise Library site.
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