插入使用InsertOneAsync新的文档(.NET 2.0驱动程序) [英] Insert new document using InsertOneAsync (.NET Driver 2.0)
问题描述
为了.NET API版本:
MongoClient客户端=新MongoClient();
VAR服务器= client.GetServer();
变种DB = server.GetDatabase(富);
变种集合= db.GetCollection< BsonDocument>(巴);
变种文档=新BsonDocument {{_id,1},{×,2}};
collection.Save(文件);
它的工作。
当我使用新的.NET驱动程序2.0:
VAR的客户=新MongoClient(mongodb的://本地主机:27017);
VAR数据库= client.GetDatabase(富);
变种集合= database.GetCollection< BsonDocument>(巴);
变种文档=新BsonDocument {{_id,1},{×,2}};
等待collection.InsertOneAsync(文件);
错误:'等待'运算符只能异步内使用方法。
考虑标志着该方法与异步修饰和改变
返回类型为'任务'。
块引用>
参考文献:
我想问问如何使用的.Net 2.0驱动程序中插入一个新的文档。谢谢
[更新1]我试图执行:
公共类资源库
{
公共静态异步任务插入()
{
VAR的客户=新MongoClient(mongodb的://本地主机:27017);
VAR数据库= client.GetDatabase(富);
变种集合= database.GetCollection< BsonDocument>(巴);
变种文档=新BsonDocument {{_id,1},{×,2}};
等待collection.InsertOneAsync(文件);
}
}
静态无效的主要(字串[] args)
{
任务TSK = Repository.Insert();
tsk.Wait();
Console.WriteLine(状态:+ tsk.Status);
}
结果:WaitingForActivation。没有在数据库中更改。请帮帮我!
[更新2(解决)]:添加tsk.Wait();有效 !
感谢这篇文章:我将如何同步运行异步任务的方法
解决方案您的方法应该是这样的。
公共异步无效插入()
{
VAR的客户=新MongoClient(mongodb的://本地主机:27017);
VAR数据库= client.GetDatabase(富);
变种集合= database.GetCollection< BsonDocument>(巴);
变种文档=新BsonDocument {{_id,1},{×,2}};
等待collection.InsertOneAsync(文件);
}
In order .Net API version :
MongoClient client = new MongoClient(); var server = client.GetServer(); var db = server.GetDatabase("foo"); var collection = db.GetCollection<BsonDocument>("bar"); var document = new BsonDocument { { "_id", 1 }, { "x", 2 } }; collection.Save(document);
It worked.
When i use new .Net Driver 2.0 :
var client = new MongoClient("mongodb://localhost:27017"); var database = client.GetDatabase("foo"); var collection = database.GetCollection<BsonDocument>("bar"); var document = new BsonDocument { { "_id", 1 }, { "x", 2 } }; await collection.InsertOneAsync(document);
Error : The 'await' operator can only be used within an async method. Consider marking this method with the 'async' modifier and changing its return type to 'Task'.
Refs :
Introducing the 2.0 .NET Driver
I want to ask how to insert a new document using .Net Driver 2.0. Thanks.
[Update 1] I tried to implement :
public class Repository { public static async Task Insert() { var client = new MongoClient("mongodb://localhost:27017"); var database = client.GetDatabase("foo"); var collection = database.GetCollection<BsonDocument>("bar"); var document = new BsonDocument { { "_id", 1 }, { "x", 2 } }; await collection.InsertOneAsync(document); } } static void Main(string[] args) { Task tsk = Repository.Insert(); tsk.Wait(); Console.WriteLine("State: " + tsk.Status); }
Result : WaitingForActivation. Nothing changed in database. Please help me!
[Update 2 (Solved)] : add tsk.Wait(); It worked ! Thanks this post : How would I run an async Task method synchronously?
解决方案Your method should be like
public async void Insert() { var client = new MongoClient("mongodb://localhost:27017"); var database = client.GetDatabase("foo"); var collection = database.GetCollection<BsonDocument>("bar"); var document = new BsonDocument { { "_id", 1 }, { "x", 2 } }; await collection.InsertOneAsync(document); }
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