Neo4jClient Documentation

Version 4.x introduces significant breaking changes. If you are upgrading from 3.x, ensure you address the following:

1. Update Connection URIs

Depending on the client type and server version, you must use the correct URI:

• GraphClient:
  • For Neo4j 3.x server: http://localhost:7474/db/data
  • For Neo4j 4.x server: http://localhost:7474/
• BoltGraphClient:
  • For both 3.x and 4.x servers: neo4j://localhost:7687 (Review Neo4j Documentation for specific configuration needs).

2. Switch to Async API

Neo4jClient 4.x is 100% async. You must replace all synchronous calls to Results or ExecuteWithoutResults with their Async equivalents.

To use Neo4jClient in your .NET project, install the latest version from the official NuGet package repository.

dotnet add package Neo4jClient

When using Neo4jClient 4.x, be aware of these fundamental changes:

• Async Only: The library has transitioned to an exclusively async API.
• Transaction Management: Transactions no longer use the TransactionScope class. Consequently, MSDTC (Microsoft Distributed Transaction Coordinator) is no longer supported.
• Neo4j Version Support: GraphClient and BoltGraphClient no longer support Neo4j 3.4 or lower. The underlying Neo4j.Driver requires Neo4j 3.5+.
• Dependency Updates:
  • Newtonsoft.Json (Json.NET) has been updated to 12.0.3.
  • Neo4j.Driver.Signed has been updated to 4.1.1.