neo4jclient merge query cause unhandled exception

问题

I want to use merge in my neo4jclient c# application, so I read this link and create a query like the below one :

resultList.ForEach(
tweets => client.Cypher
    .Merge("(tweet:Tweet {newtweet})")
    .OnCreate()
    .Set("tweet = {newtweet}")
    .WithParams(new Tweets(tweets))
    .ExecuteWithoutResults());

But it crash and I don't know what I am missing.

Which part of my code is wrong?

回答1:

First define your tweet class:

public class Tweet {
    public long StatusId { get; set; }
    public string Author { get; set; }
    public string Content { get; set; } 
}

Then try this statement like this:

var newTweet = new Tweet { StatusId = 2344
    , Author = "@AuthorName"
    , Content = "this is a tweet" };
graphClient.Cypher
    .Merge("(tweet:Tweet { StatusId: {id} })")
    .OnCreate()
    .Set("tweet = {newTweet}")
    .WithParams(new {
        id = newTweet.StatusId,
        newTweet
    })
    .ExecuteWithoutResults();

来源：https://stackoverflow.com/questions/32658527/neo4jclient-merge-query-cause-unhandled-exception