Asynchronous Sort for MongoDB in .Net

Question

I am using MongoDB and .Net in visual studio to make a web API. It works but I'm trying to make this asynchronous

I am trying to get the most recent record added to a collection

public T LoadRecentRecord<T>(string collectionName)
{   
    var collection = db.GetCollection<T>(collectionName);
    return collection.Find(new BsonDocument()).Sort("{_id:-1}").Limit(1).First();
}

Most of the collection methods have an async version also. See some examples at the MongoDb C# Driver Examples - Read Operations. — prasad_
– prasad_, Commented Jun 3, 2021 at 5:24
See Sorting documents section of Quick Tour Tutorials - for performing an async read with sort. — prasad_
– prasad_, Commented Jun 3, 2021 at 5:31

Grigory Zhadko · Accepted Answer · 2021-06-03 07:51:19Z

1

All the methods which read or write data to the database have an async version. In your case, it is the method FirstAsync(). Your code should look something like that:

public async Task<T> LoadRecentRecord<T>(string collectionName)
{   
    var collection = db.GetCollection<T>(collectionName);
    var item = await collection.Find(new BsonDocument()).Sort("{_id:-1}").Limit(1).FirstAsync();
    return item;
}

answered Jun 3, 2021 at 7:51

Grigory Zhadko

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