It looks like the geode-dotnet-core-client repository is stale, and the code has moved to the geode-native repository. Is it ok to go ahead and remove the geode-dotnet-core-client repository? If so, I'll figure out how to make that happen. At a minimum we could commit a change that deletes all the code and leaves a README pointing to the new location.
Old Location: https://github.com/apache/geode-dotnet-core-client/ New Location: https://github.com/apache/geode-native/tree/develop/netcore -Dan