C# C中异步创建新DocumentDB文档的问题#
我刚开始使用DocumentDB，所以我下载了.NETSDK。按照从Azure网站下载的使用示例，我尝试创建一些文档以保存到DocumentDB。示例代码如下所示C# C中异步创建新DocumentDB文档的问题#,c#,azure,azure-cosmosdb,C#,Azure,Azure Cosmosdb,我刚开始使用DocumentDB，所以我下载了.NETSDK。按照从Azure网站下载的使用示例，我尝试创建一些文档以保存到DocumentDB。示例代码如下所示 public static void Main(string[] args) { try { GetStartedDemo().Wait(); } catch (DocumentClientException de)
public static void Main(string[] args)
{
try
{
GetStartedDemo().Wait();
}
catch (DocumentClientException de)
{
// omissis
}
}
private static async Task GetStartedDemo()
{
var client = new DocumentClient(new Uri(EndpointUrl), AuthorizationKey);
Family andersonFamily = new Family
{
Id = "AndersenFamily",
LastName = "Andersen",
Parents = new Parent[] {
new Parent { FirstName = "Thomas" },
new Parent { FirstName = "Mary Kay"}
},
Children = new Child[] {
new Child
{
FirstName = "Henriette Thaulow",
Gender = "female",
Grade = 5,
Pets = new Pet[] {
new Pet { GivenName = "Fluffy" }
}
}
},
Address = new Address { State = "WA", County = "King", City = "Seattle" },
IsRegistered = true
};
await client.CreateDocumentAsync("dbs/" + database.Id + "/colls/" + documentCollection.Id, andersonFamily);
client.Dispose();
}
public static async Task Save(int UserId, int productID, string code, string language, string dataOraLettura, string longitudine, string latitudine, string nazione_lettura)
{
CultureInfo ciEN = CultureInfo.GetCultureInfo("en-US");
CodeType ScannedCode = new CodeType
{
Code = code,
ProductId = productID,
ScanLog = new List<CodeType.ScanDataType>()
};
ScannedCode.ScanLog.Add(new CodeType.ScanDataType
{
Location = new Microsoft.Azure.Documents.Spatial.Point(double.Parse(longitudine, ciEN.NumberFormat), double.Parse(latitudine, ciEN.NumberFormat)),
ScanType = CodeType.ScanDataType.eScanType.Alert,
UserId = UserId.ToString(),
TimeStamp = long.Parse(DateTime.Now.ToString("yyyyMMddHHmmssffff"))
});
await ScannedCode.AddAsync();
}
public async Task AddAsync()
{
using (DocumentClient client = new DocumentClient(new Uri(WebConfigurationManager.AppSettings["DbURI"]), WebConfigurationManager.AppSettings["DbKEY"]))
{
var CodeDocuments = client.CreateDocumentQuery<CodeType>("dbs/" + database.Id + "/colls/" + coll.Id).Where(a => a.Code == this.Code).ToArray();
if (CodeDocuments.Length == 0)
await client.CreateDocumentAsync("dbs/" + database.Id + "/colls/" + coll.Id, this);
}
}
await client.CreateDocumentAsync("dbs/" + database.Id + "/colls/" + coll.Id, this);
public static void Main(string[] args)
{
try
{
GetStartedDemo().Wait();
}
catch (DocumentClientException de)
{
// omissis
}
}
private static async Task GetStartedDemo()
{
var client = new DocumentClient(new Uri(EndpointUrl), AuthorizationKey);
Family andersonFamily = new Family
{
Id = "AndersenFamily",
LastName = "Andersen",
Parents = new Parent[] {
new Parent { FirstName = "Thomas" },
new Parent { FirstName = "Mary Kay"}
},
Children = new Child[] {
new Child
{
FirstName = "Henriette Thaulow",
Gender = "female",
Grade = 5,
Pets = new Pet[] {
new Pet { GivenName = "Fluffy" }
}
}
},
Address = new Address { State = "WA", County = "King", City = "Seattle" },
IsRegistered = true
};
await client.CreateDocumentAsync("dbs/" + database.Id + "/colls/" + documentCollection.Id, andersonFamily);
client.Dispose();
}
public static async Task Save(int UserId, int productID, string code, string language, string dataOraLettura, string longitudine, string latitudine, string nazione_lettura)
{
CultureInfo ciEN = CultureInfo.GetCultureInfo("en-US");
CodeType ScannedCode = new CodeType
{
Code = code,
ProductId = productID,
ScanLog = new List<CodeType.ScanDataType>()
};
ScannedCode.ScanLog.Add(new CodeType.ScanDataType
{
Location = new Microsoft.Azure.Documents.Spatial.Point(double.Parse(longitudine, ciEN.NumberFormat), double.Parse(latitudine, ciEN.NumberFormat)),
ScanType = CodeType.ScanDataType.eScanType.Alert,
UserId = UserId.ToString(),
TimeStamp = long.Parse(DateTime.Now.ToString("yyyyMMddHHmmssffff"))
});
await ScannedCode.AddAsync();
}
public async Task AddAsync()
{
using (DocumentClient client = new DocumentClient(new Uri(WebConfigurationManager.AppSettings["DbURI"]), WebConfigurationManager.AppSettings["DbKEY"]))
{
var CodeDocuments = client.CreateDocumentQuery<CodeType>("dbs/" + database.Id + "/colls/" + coll.Id).Where(a => a.Code == this.Code).ToArray();
if (CodeDocuments.Length == 0)
await client.CreateDocumentAsync("dbs/" + database.Id + "/colls/" + coll.Id, this);
}
}
public static async Task Save（int UserId、int productID、string code、string language、string dataOraLettura、string longitudine、string latitudine、string nazione_lettura）
{
CultureInfo ciEN=CultureInfo.GetCultureInfo（“en-US”）；
代码类型ScannedCode=新代码类型
{
代码=代码，
ProductId=ProductId，
ScanLog=新列表（）
};
ScannedCode.ScanLog.Add（新代码类型.ScandaType
{
Location=new Microsoft.Azure.Documents.Spatial.Point（double.Parse（longitudine，ciEN.NumberFormat），double.Parse（latitudine，ciEN.NumberFormat）），
ScanType=CodeType.ScandaType.eScanType.Alert，
UserId=UserId.ToString（），
TimeStamp=long.Parse（DateTime.Now.ToString（“yyyymmddhhmmssfff”））
});
等待ScannedCode.AddAsync（）；
}
公共异步任务AddAsync（）
{
使用（DocumentClient client=new DocumentClient（新Uri（WebConfiguration Manager.AppSettings[“DbURI”]），WebConfiguration Manager.AppSettings[“DbKEY”]））
{
var CodeDocuments=client.CreateDocumentQuery（“dbs/”+database.Id+“/colls/”+coll.Id）。其中（a=>a.Code==this.Code）。ToArray（）；
如果（CodeDocuments.Length==0）
等待client.CreateDocumentAsync（“dbs/”+database.Id+“/colls/”+coll.Id，this）；
}
}
异步任务似乎会阻塞，并且它不会将控制权返回给调用方，然后保持循环执行。正确，您有一个典型的异步阻塞另一个异步的情况。 在wait ScannedCode.AddAsync（）上，应将ConfigureWait设置为false 这使其在线程池线程而不是ASP.NET请求上下文上恢复
您可以阅读下面的文章，其中很好地解释了这一点以及使用异步代码时的其他最佳实践。Buncha小东西：ScannedCode.AddAsync（）看起来不是静态的，但它被称为静态的。你确定你没有超载吗？在提取“dbs/../colls/”模式之前，需要重复多少次？如果你在一个方法上有20个参数，你肯定错过了一个——把它们放在一个类中。不要遵循示例如何隐藏exception@StenPetrov这不是代码审查；OP询问了一个异步问题。无需对编码风格提出批评。ScannedCode.AddAsync（）似乎不是静态的，这是我首先要检查的。这个问题本身需要一个回顾，没有足够的信息来继续。。。。在某些情况下，如果OP重构自己的代码，他们会自己发现错误。你的观点很好，因此我的回答是评论，而不是回答。尝试将
wait client.CreateDocumentAsyncclient.CreateDocumentAsync（…）.Result