Problem connecting .NET Client to Neo4j Desktop version 4

1
votes

I've just installed Neo4j Desktop, and I am trying to connect using .NET Client, the problem is that when I try to connect I get the Error 404 response (resource not found). The current situation is as follows:

1) I've created a new user (admin, with administrator rights), to replace the use of neo4j user (I don't have the password for this user).

2) Using admin user I can connect successfully to Neo4j using a browser, so the user seems ok.

3) I have a database running under the Neo4j default database, I can query this db from browser interface, so also db seems ok.

4) In my .NET application I've just put the connection commands present in all .NET Clients example:

var graphClient = new GraphClient(new Uri("http://localhost:7474/db/data"), "admin", "admin"); graphClient.Connect();

The execution of Connect generate an exception for resource not found (404).

The current version of Neo4j is 4.0.3, the version of Noe4jClient is 3.1.0.6 (the latest NuGet package found), my suspect is that client version 3 is not compatible with Neo4j version 4.

1
neo4jneo4jclient

1 Answers

2
votes

You are right, the GraphClient is not able to work with a 4.x database at the moment, you can use the BoltGraphClient - but you need to provide a driver instance to it to get it to work due to a change in the way Encryption works with 4.x.

//First create a 'Driver' instance.
var driver = GraphDatabase.Driver("bolt://localhost:7687", AuthTokens.Basic("neo4j", "neo"), Config.Builder.WithEncryptionLevel(EncryptionLevel.None).ToConfig());

//Pass that driver to the BoltGraphClient
var bgc = new BoltGraphClient(driver);

//Connect.
bgc.Connect();