更新文档下的Name字段可以:
var filter = Builders.Filter.Eq("Name", "1");
var update = Builders.Update.Set("Name", "880");
var result = collection.UpdateOneAsync(filter, update).Result;
更新子文档下的字段就不能了!
var filter = Builders.Filter.Eq("address.num", "1");
var update = Builders.Update.Set("address.num", "880");
var result = collection.UpdateOneAsync(filter, update).Result;
num是people下的address下的一个字段