Why Am I Getting a 'TypeLoadException: 'No Implementation'' Error Despite Having Implemented the Method?

TypeLoadException: "No Implementation" Despite Existing Code

This error occurs when a base class method lacks an implementation in a derived class, even if the implementation seems to be present. This paradox often stems from assembly version conflicts.

Root Cause:

The problem typically arises from inconsistencies between the versions of referenced assemblies. Your code might be referencing an older version of an assembly that doesn't include the implemented method.

Resolution:

To correct this, delete the "bin" and "obj" folders in your project and rebuild the entire solution. This forces a clean recompilation, ensuring all references point to the correct, up-to-date assemblies containing the complete method implementations.

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