文档 AWS SDK 示例 GitHub 存储库中还有更多 [S AWS DK 示例](https://github.com/awsdocs/aws-doc-sdk-examples)。

本文属于机器翻译版本。若本译文内容与英语原文存在差异，则一律以英文原文为准。

# AWS STS 使用示例 适用于 .NET 的 SDK
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以下代码示例向您展示了如何使用with来执行操作和实现常见场景 AWS STS。 适用于 .NET 的 AWS SDK 

*操作*是大型程序的代码摘录，必须在上下文中运行。您可以通过操作了解如何调用单个服务函数，还可以通过函数相关场景的上下文查看操作。

每个示例都包含一个指向完整源代码的链接，您可以从中找到有关如何在上下文中设置和运行代码的说明。

**Topics**
+ [操作](#actions)

## 操作
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### `AssumeRole`
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以下代码示例演示了如何使用 `AssumeRole`。

**适用于 .NET 的 SDK**  
 还有更多相关信息 GitHub。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv3/STS#code-examples)中查找完整示例，了解如何进行设置和运行。

```
using System;
using System.Threading.Tasks;
using Amazon;
using Amazon.SecurityToken;
using Amazon.SecurityToken.Model;

namespace AssumeRoleExample
{
    class AssumeRole
    {
        /// <summary>
        /// This example shows how to use the AWS Security Token
        /// Service (AWS STS) to assume an IAM role.
        ///
        /// NOTE: It is important that the role that will be assumed has a
        /// trust relationship with the account that will assume the role.
        ///
        /// Before you run the example, you need to create the role you want to
        /// assume and have it trust the IAM account that will assume that role.
        ///
        /// See https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_create.html
        /// for help in working with roles.
        /// </summary>

        // A region property may be used if the profile or credentials loaded do not specify a region,
        // or to use a specific region.
        private static readonly RegionEndpoint REGION = RegionEndpoint.USWest2;

        static async Task Main()
        {
            // Create the SecurityToken client and then display the identity of the
            // default user.
            var roleArnToAssume = "arn:aws:iam::123456789012:role/testAssumeRole";

            var client = new Amazon.SecurityToken.AmazonSecurityTokenServiceClient(REGION);

            // Get and display the information about the identity of the default user.
            var callerIdRequest = new GetCallerIdentityRequest();
            var caller = await client.GetCallerIdentityAsync(callerIdRequest);
            Console.WriteLine($"Original Caller: {caller.Arn}");

            // Create the request to use with the AssumeRoleAsync call.
            var assumeRoleReq = new AssumeRoleRequest()
            {
                DurationSeconds = 1600,
                RoleSessionName = "Session1",
                RoleArn = roleArnToAssume
            };

            var assumeRoleRes = await client.AssumeRoleAsync(assumeRoleReq);

            // Now create a new client based on the credentials of the caller assuming the role.
            var client2 = new AmazonSecurityTokenServiceClient(credentials: assumeRoleRes.Credentials, REGION);

            // Get and display information about the caller that has assumed the defined role.
            var caller2 = await client2.GetCallerIdentityAsync(callerIdRequest);
            Console.WriteLine($"AssumedRole Caller: {caller2.Arn}");
        }
    }
}
```
+  有关 API 的详细信息，请参阅 *适用于 .NET 的 AWS SDK API 参考[AssumeRole](https://docs.aws.amazon.com/goto/DotNetSDKV3/sts-2011-06-15/AssumeRole)*中的。