第 4 版 (V4) 適用於 .NET 的 AWS SDK 已發行！

如需有關中斷變更和遷移應用程式的資訊，請參閱[遷移主題](https://docs.aws.amazon.com/sdk-for-net/v4/developer-guide/net-dg-v4.html)。

 [https://docs.aws.amazon.com/sdk-for-net/v4/developer-guide/net-dg-v4.html](https://docs.aws.amazon.com/sdk-for-net/v4/developer-guide/net-dg-v4.html)

本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

# 終止 Amazon EC2 執行個體
<a name="terminate-instance"></a>

當您不再需要一或多個 Amazon EC2 執行個體時，您可以終止它們。

此範例說明如何使用 適用於 .NET 的 AWS SDK 來終止 EC2 執行個體。它需要執行個體 ID 做為輸入。

## 開發套件參考
<a name="w2aac19c15c21c19c11b7b1"></a>

NuGet 套件：
+ [AWSSDK.EC2](https://www.nuget.org/packages/AWSSDK.EC2)

程式設計元素：
+ 命名空間 [Amazon.EC2](https://docs.aws.amazon.com/sdkfornet/v4/apidocs/items/EC2/NEC2.html)

  [AmazonEC2Client](https://docs.aws.amazon.com/sdkfornet/v4/apidocs/items/EC2/TEC2Client.html) 類別
+ 命名空間 [Amazon.EC2.Model](https://docs.aws.amazon.com/sdkfornet/v4/apidocs/items/EC2/NEC2Model.html)

  類別 [TerminateInstancesRequest](https://docs.aws.amazon.com/sdkfornet/v4/apidocs/items/EC2/TTerminateInstancesRequest.html)

  類別 [TerminateInstancesResponse](https://docs.aws.amazon.com/sdkfornet/v4/apidocs/items/EC2/TTerminateInstancesResponse.html)

```
using System;
using System.Threading.Tasks;
using System.Collections.Generic;
using Amazon.EC2;
using Amazon.EC2.Model;

namespace EC2TerminateInstance
{
  class Program
  {
    static async Task Main(string[] args)
    {
      if((args.Length == 1) && (args[0].StartsWith("i-")))
      {
        // Terminate the instance
        var ec2Client = new AmazonEC2Client();
        await TerminateInstance(ec2Client, args[0]);
      }
      else
      {
        Console.WriteLine("\nCommand-line argument missing or incorrect.");
        Console.WriteLine("\nUsage: EC2TerminateInstance instance-ID");
        Console.WriteLine("  instance-ID - The EC2 instance you want to terminate.");
        return;
      }
    }

    //
    // Method to terminate an EC2 instance
    private static async Task TerminateInstance(IAmazonEC2 ec2Client, string instanceID)
    {
      var request = new TerminateInstancesRequest{
        InstanceIds = new List<string>() { instanceID }};
      TerminateInstancesResponse response =
        await ec2Client.TerminateInstancesAsync(new TerminateInstancesRequest{
          InstanceIds = new List<string>() { instanceID }
        });
      foreach (InstanceStateChange item in response.TerminatingInstances)
      {
        Console.WriteLine("Terminated instance: " + item.InstanceId);
        Console.WriteLine("Instance state: " + item.CurrentState.Name);
      }
    }
  }
}
```

執行範例之後，最好登入 [Amazon EC2 主控台](https://console.aws.amazon.com/ec2/)，以確認 [EC2 執行個體](https://console.aws.amazon.com/ec2/v2/home#Instances)已終止。