Z.BulkOperations (nuget): An improved version of SqlBulkCopy.  Features: BulkInsert, BulkDelete, BulkUpdate, BulkMerge, and more!  Support: SQL Server, MySQL, Oracle, PostgreSQL, SQLite, and more!  DataTable Example: https://dotnetfiddle.net/2B7QpT  Entity Example: https://dotnetfiddle.net/istUUT  Include free and prime features.
Keywords: Bulk|BulkCopy|BulkOperation|SqlBulkCopy|Insert|Update|Delete|Merge|Upsert|Synchronize|Batch