C# 如何异步统计MongoDB GridFS bucket中的所有文件

我需要计算GridFS存储桶中的所有对象

我写了以下方法，但我想如果有更好的方法：

public async Task<long> GetAllFilesCountAsync()
{
    var bucket = new GridFSBucket(newDatabase, new GridFSBucketOptions
    {
        BucketName = "fs",
        ChunkSizeBytes = 1048576, // 1MB
        WriteConcern = WriteConcern.WMajority,
        ReadPreference = ReadPreference.Secondary
    });


    var filter = Builders<GridFSFileInfo>.Filter.Empty;
    var options = new GridFSFindOptions
    {
    };

    using (var cursor = await bucket.FindAsync(filter, options))
    {
        var fileInfo = await cursor.ToListAsync(); // <-- this returns the whole collection

        var count = fileInfo.Count();

        return count;
    }
}

公共异步任务GetAllFileCountAsync（） { var bucket=new GridFSBucket（newDatabase，new GridFSBucket选项 { BucketName=“fs”， ChunkSizeBytes=1048576，//1MB WriteConcern=WriteConcern.WMajority， ReadPreference=ReadPreference.Secondary }); var filter=Builders.filter.Empty； var options=new GridFSFindOptions { }; 使用（var cursor=wait bucket.FindAsync（过滤器，选项）） { var fileInfo=wait cursor.ToListAsync（）//