tencent cloud

using COSXML.Model.Object;
using COSXML.Auth;
using System;
using COSXML;

namespace COSSnippet
{
    public class DoesObjectExistModel {

      private CosXml cosXml;

      DoesObjectExistModel() {
        CosXmlConfig config = new CosXmlConfig.Builder()
          .SetRegion("COS_REGION") // 设置默认的地域, COS 地域的简称请参照 https://www.tencentcloud.com/document/product/436/6224?from_cn_redirect=1
          .Build();

        string secretId = "SECRET_ID";   // 云 API 密钥 SecretId, 获取 API 密钥请参照 https://console.tencentcloud.com/cam/capi
        string secretKey = "SECRET_KEY"; // 云 API 密钥 SecretKey, 获取 API 密钥请参照 https://console.tencentcloud.com/cam/capi
        long durationSecond = 600;          //每次请求签名有效时长，单位为秒
        QCloudCredentialProvider qCloudCredentialProvider = new DefaultQCloudCredentialProvider(secretId, 
          secretKey, durationSecond);

        this.cosXml = new CosXmlServer(config, qCloudCredentialProvider);
      }

      /// 检查对象是否存在
      public void DoesObjectExist()
      {
        try
        {
          // 存储桶名称，此处填入格式必须为 bucketname-APPID, 其中 APPID 获取参考 https://console.tencentcloud.com/developer
          string bucket = "examplebucket-1250000000";
          string key = "exampleobject"; //对象键
          DoesObjectExistRequest request = new DoesObjectExistRequest(bucket, key);
          //执行请求
          bool exist = cosXml.DoesObjectExist(request);
          //请求成功
          Console.WriteLine("object exist state is: " + exist);
        }
        catch (COSXML.CosException.CosClientException clientEx)
        {
          //请求失败
          Console.WriteLine("CosClientException: " + clientEx);
        }
        catch (COSXML.CosException.CosServerException serverEx)
        {
          //请求失败
          Console.WriteLine("CosServerException: " + serverEx.GetInfo());
        }

        //.cssg-snippet-body-end
      }

      // .cssg-methods-pragma

      static void Main(string[] args)
      {
        DoesObjectExistModel m = new DoesObjectExistModel();

        /// 检查对象是否存在
        m.DoesObjectExist();
        // .cssg-methods-pragma
      }
    }
}