IDocumentClient.ReadUserAsync Method
Definition
Important
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Overloads
| ReadUserAsync(String, RequestOptions) |
Reads a User from the Azure Cosmos DB service as an asynchronous operation. |
| ReadUserAsync(Uri, RequestOptions) |
Reads a User as an asynchronous operation from the Azure Cosmos DB service. |
ReadUserAsync(String, RequestOptions)
Reads a User from the Azure Cosmos DB service as an asynchronous operation.
public System.Threading.Tasks.Task<Microsoft.Azure.Documents.Client.ResourceResponse<Microsoft.Azure.Documents.User>> ReadUserAsync (string userLink, Microsoft.Azure.Documents.Client.RequestOptions options = default);abstract member ReadUserAsync : string * Microsoft.Azure.Documents.Client.RequestOptions -> System.Threading.Tasks.Task<Microsoft.Azure.Documents.Client.ResourceResponse<Microsoft.Azure.Documents.User>>Public Function ReadUserAsync (userLink As String, Optional options As RequestOptions = Nothing) As Task(Of ResourceResponse(Of User))Parameters
- userLink
- String
The link to the User resource to be read.
- options
- RequestOptions
(Optional) The request options for the request.
Returns
A System.Threading.Tasks containing a ResourceResponse<TResource> which wraps a User containing the read resource record.
Exceptions
If userLink is not set.
This exception can encapsulate many different types of errors. To determine the specific error always look at the StatusCode property. Some common codes you may get when creating a Document are:
| StatusCode | Reason for exception |
|---|---|
| 404 | NotFound - This means the resource you tried to read did not exist. |
| 429 | TooManyRequests - This means you have exceeded the number of request units per second. Consult the DocumentClientException.RetryAfter value to see how long you should wait before retrying this operation. |
Examples
//Reads a User resource from a Database
// - sample_database is the ID of the database
// - user_id is the ID of the user to be read
var userLink = "/dbs/sample_database/users/user_id";
User user = await client.ReadUserAsync(userLink);
Remarks
Doing a read of a resource is the most efficient way to get a resource from the Database. If you know the resource's ID, do a read instead of a query by ID.
The example shown uses ID-based links, where the link is composed of the ID properties used when the resources were created. You can still use the SelfLink property of the User if you prefer. A self-link is a URI for a resource that is made up of Resource Identifiers (or the _rid properties). ID-based links and SelfLink will both work. The format for userLink is always "/dbs/{db identifier}/users/{user identifier}" only the values within the {...} change depending on which method you wish to use to address the resource.
See also
Applies to
ReadUserAsync(Uri, RequestOptions)
Reads a User as an asynchronous operation from the Azure Cosmos DB service.
public System.Threading.Tasks.Task<Microsoft.Azure.Documents.Client.ResourceResponse<Microsoft.Azure.Documents.User>> ReadUserAsync (Uri userUri, Microsoft.Azure.Documents.Client.RequestOptions options = default);abstract member ReadUserAsync : Uri * Microsoft.Azure.Documents.Client.RequestOptions -> System.Threading.Tasks.Task<Microsoft.Azure.Documents.Client.ResourceResponse<Microsoft.Azure.Documents.User>>Public Function ReadUserAsync (userUri As Uri, Optional options As RequestOptions = Nothing) As Task(Of ResourceResponse(Of User))Parameters
- userUri
- Uri
A URI to the User resource to be read.
- options
- RequestOptions
The request options for the request.
Returns
A System.Threading.Tasks containing a ResourceResponse<TResource> which wraps a User containing the read resource record.
Exceptions
If userUri is not set.
This exception can encapsulate many different types of errors. To determine the specific error always look at the StatusCode property. Some common codes you may get when creating a Document are:
| StatusCode | Reason for exception |
|---|---|
| 404 | NotFound - This means the resource you tried to read did not exist. |
| 429 | TooManyRequests - This means you have exceeded the number of request units per second. Consult the DocumentClientException.RetryAfter value to see how long you should wait before retrying this operation. |
Examples
//Reads a User resource where
// - db_id is the ID property of the Database
// - user_id is the ID property of the User you wish to read.
var userLink = UriFactory.CreateUserUri("db_id", "user_id");
User user = await client.ReadUserAsync(userLink);
Remarks
Doing a read of a resource is the most efficient way to get a resource from the service. If you know the resource's ID, do a read instead of a query by ID.
