你当前正在访问 Microsoft Azure Global Edition 技术文档网站。如果需要访问由世纪互联运营的 Microsoft Azure 中国技术文档网站，请访问 https://docs.azure.cn。

IDocumentClient.ReplaceAttachmentAsync 方法

参考

定义

命名空间:: Microsoft.Azure.Documents

程序集:: Microsoft.Azure.DocumentDB.Core.dll, Microsoft.Azure.Documents.Client.dll

包:: Microsoft.Azure.DocumentDB v2.18.0, Microsoft.Azure.DocumentDB.Core v2.18.0

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

重载

ReplaceAttachmentAsync(Attachment, RequestOptions, CancellationToken)	将 Attachment Azure Cosmos DB 服务中的替换为异步操作。
ReplaceAttachmentAsync(Uri, Attachment, RequestOptions, CancellationToken)	将附件替换为 Azure Cosmos DB 服务中的异步操作。

ReplaceAttachmentAsync(Attachment, RequestOptions, CancellationToken)

将 Attachment Azure Cosmos DB 服务中的替换为异步操作。

public System.Threading.Tasks.Task<Microsoft.Azure.Documents.Client.ResourceResponse<Microsoft.Azure.Documents.Attachment>> ReplaceAttachmentAsync (Microsoft.Azure.Documents.Attachment attachment, Microsoft.Azure.Documents.Client.RequestOptions options = default, System.Threading.CancellationToken cancellationToken = default);

abstract member ReplaceAttachmentAsync : Microsoft.Azure.Documents.Attachment * Microsoft.Azure.Documents.Client.RequestOptions * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Microsoft.Azure.Documents.Client.ResourceResponse<Microsoft.Azure.Documents.Attachment>>

Public Function ReplaceAttachmentAsync (attachment As Attachment, Optional options As RequestOptions = Nothing, Optional cancellationToken As CancellationToken = Nothing) As Task(Of ResourceResponse(Of Attachment))

参数

attachment: Attachment

已更新 Attachment ，以将现有资源替换为。

options: RequestOptions

(可选) 请求的请求选项。

cancellationToken: CancellationToken

(可选) A CancellationToken ，可供其他对象或线程用来接收取消通知。

Task<ResourceResponse<Attachment>>

一 System.Threading.Tasks 个， ResourceResponse<TResource> 它包含包装 Attachment 包含更新的资源记录的。

例外

ArgumentNullException

如果未 attachment 设置。

DocumentClientException

此异常可以封装许多不同类型的错误。若要确定特定错误，请始终查看 StatusCode 属性。创建文档时可能会获取的一些常见代码包括：

StatusCode	异常原因
404	NotFound - 这意味着你尝试删除的资源不存在。

示例

//Fetch the item to be updated
Attachment attachment = client.CreateAttachmentQuery(attachmentLink)
                            .Where(r => r.Id == "attachment id")
                            .AsEnumerable()
                            .SingleOrDefault();

//Update some properties on the found resource
attachment.MediaLink = "updated value";

//Now persist these changes to the database by replacing the original resource
Attachment updated = await client.ReplaceAttachmentAsync(attachment);

另请参阅

适用于

ReplaceAttachmentAsync(Uri, Attachment, RequestOptions, CancellationToken)

将附件替换为 Azure Cosmos DB 服务中的异步操作。

public System.Threading.Tasks.Task<Microsoft.Azure.Documents.Client.ResourceResponse<Microsoft.Azure.Documents.Attachment>> ReplaceAttachmentAsync (Uri attachmentUri, Microsoft.Azure.Documents.Attachment attachment, Microsoft.Azure.Documents.Client.RequestOptions options = default, System.Threading.CancellationToken cancellationToken = default);

abstract member ReplaceAttachmentAsync : Uri * Microsoft.Azure.Documents.Attachment * Microsoft.Azure.Documents.Client.RequestOptions * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Microsoft.Azure.Documents.Client.ResourceResponse<Microsoft.Azure.Documents.Attachment>>

Public Function ReplaceAttachmentAsync (attachmentUri As Uri, attachment As Attachment, Optional options As RequestOptions = Nothing, Optional cancellationToken As CancellationToken = Nothing) As Task(Of ResourceResponse(Of Attachment))

参数

attachmentUri: Uri

要更新的附件的 URI。

attachment: Attachment

附件资源。

options: RequestOptions

(可选的) RequestOptions 请求的。

cancellationToken: CancellationToken