API | Operation | Description |
Checking a bucket and its permissions | Checks whether a bucket exists and whether you have permission to access it |
DoesBucketExist
) is used to check whether a bucket exists.DoesBucketExist
API is a simple version of the HEAD Bucket
API provided by the .NET SDK. It can only be used to check whether a bucket exists and return a Boolean value.using COSXML.Model.Bucket;using COSXML.Auth;using System;using COSXML;namespace COSSnippet{public class DoesBucketExistModel {private CosXml cosXml;DoesBucketExistModel() {CosXmlConfig config = new CosXmlConfig.Builder().SetRegion("COS_REGION") // Set the default region. For abbreviations of COS regions, visit https://www.tencentcloud.com/document/product/436/6224?from_cn_redirect=1..Build();string secretId = "SECRET_ID"; // SecretId of the TencentCloud API. For more information about how to obtain the API key, see https://console.tencentcloud.com/cam/capi.string secretKey = "SECRET_KEY"; // SecretKey of the TencentCloud API. For more information about how to obtain the API key, see https://console.tencentcloud.com/cam/capi.long durationSecond = 600; // Validity period of the request signature in secondsQCloudCredentialProvider qCloudCredentialProvider = new DefaultQCloudCredentialProvider(secretId,secretKey, durationSecond);this.cosXml = new CosXmlServer(config, qCloudCredentialProvider);}/// Check whether a bucket existspublic void DoesBucketExist(){try{// Bucket name in the format of `BucketName-APPID`. You can get APPID by referring to https://console.tencentcloud.com/developer.string bucket = "examplebucket-1250000000";DoesBucketExistRequest request = new DoesBucketExistRequest(bucket);// Execute the requestbool existState = cosXml.DoesBucketExist(request);// Request succeededConsole.WriteLine("bucket exist state is: " + existState);}catch (COSXML.CosException.CosClientException clientEx){// Request failedConsole.WriteLine("CosClientException: " + clientEx);}catch (COSXML.CosException.CosServerException serverEx){// Request failedConsole.WriteLine("CosServerException: " + serverEx.GetInfo());}}static void Main(string[] args){DoesBucketExistModel m = new DoesBucketExistModel();/// Check whether a bucket existsm.DoesBucketExist();}}}
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