How Can I Use Multiple DLLs with Identical Namespaces?

Using Multiple DLLs with Duplicate Namespaces

In a typical programming project, it is possible to encounter multiple DLLs with identical namespaces. This can menimbulkan kebingungan, especially if the DLLs contain methods and types with conflicting or overlapping names. However, resolving this issue is relatively straightforward.

The key to using multiple DLLs with the same namespace is to recognize that namespaces are not true, opaque types. Rather, they are simply a means of prefixing types with a shared identifier. This allows for multiple types with the same name to coexist within different namespaces.

Within the framework, each type is uniquely identified by its fully qualified name, which includes its alias and namespace. As a result, the framework distinguishes between types with identical names but different namespaces. Therefore, referencing both DLLs and using their methods and types poses no inherent problems.

In the unlikely event that two assemblies contain types with the same name and namespace, you can leverage aliases to specify which assembly should be used for a particular type. The default alias for all references is "global," but you can define your own alias when referencing an assembly. This can be done via a compiler switch or through Visual Studio's properties box. Additionally, an extern alias clause can be added to the top of the source file to access types from different assemblies using the format "::MyNamespace.Type."

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