NET中使用 Neo4j 5.20.0 学习记录

使用属性创建节点

语句
//创建单个节点
CREATE (n:Person $props)
RETURN n
//创建多个节点
UNWIND $props AS map
CREATE (n)
SET n = map

具体参数请访问 https://neo4j.com/docs/cypher-manual/current/clauses/create/

NET
　　using Neo4jClient;
   private readonly BoltGraphClient _client;

   public MedicalGraphService()
   {
        //连接数据库
       _client = new BoltGraphClient(new Uri("bolt://localhost:7687"), "user", "pwd");
       _client.ConnectAsync().Wait();
   }
   
  public async Task<string> CreateMedicalGraph()
 {
    List<Doctor> doctors = new List<Doctor> {
    new Doctor { Name = "史密斯博士", Specialty = "心脏病科" },
    new Doctor { Name = "约翰逊医生", Specialty = "神经学科" } };
    
    try
    {
　　//创建单个节点
    await _client.Cypher
    .Create("(n:doctor $doctors)")
    .WithParam("doctors", doctors[0])
    .ExecuteWithoutResultsAsync();
    //创建多个节点
     await   _client.Cypher
   　 .Unwind(doctors, "doctors")
  　　.Create("(n:Doctor)")
  　　.Set("n = doctors")
 　　.ExecuteWithoutResultsAsync();
    }
    catch (Exception ex)
    {
     return "创建失败";
    }
    return "创建成功";
}