使用 C# 在 WPF 中的 Firestore 写入批处理？

Question

I'm using google-cloud-dotnet library to work with Firestore in my WPF program using c#

I need to write large amount of documents at once, about 2000 documents.. So I have to find a way better than writing a single document each time

Found WriteBatch class, and tried the following:

var batch = new WriteBatch();

DocumentReference docRef = db.Document("cities/myCity");
batch = batch.Set(docRef, new {
    Name = "Los Angeles",
    Country = "USA",
    State = "CA",
});

batch.CommitAsync();

but couldn't initiate the batch correctly, getting an error:

WriteBatch does not contain a constructor that takes 0 arguments

So could you please explain how should I initiate the batch writing to be used later?

Answer 1

After some researching I was able to use batch write successfully, example :

using Google.Cloud.Firestore;

// ...

System.Environment.SetEnvironmentVariable("GOOGLE_APPLICATION_CREDENTIALS", "myCredentials.json");
FirestoreDb db = await FirestoreDb.CreateAsync("myProject");

var batch = db.StartBatch();

DocumentReference docRef = db.Document("cities/myCity");
batch = batch.Set(docRef, new {
    Name = "Los Angeles",
    Country = "USA",
    State = "CA",
});

batch.CommitAsync();