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Object Storage Service:Delete the tags of an object

Last Updated:Oct 16, 2023

Object tagging uses a key-value pair to identify objects. This topic describes how to delete the tags of an object.

Usage notes

  • In this topic, the public endpoint of the China (Hangzhou) region is used. If you want to access OSS by using other Alibaba Cloud services in the same region as OSS, use an internal endpoint. For more information about the regions and endpoints supported by OSS, see Regions and endpoints.

  • In this topic, an OSSClient instance is created by using an OSS endpoint. If you want to create an OSSClient instance by using custom domain names or Security Token Service (STS), see Initialization.

  • To delete the tags of an object, you must have the oss:DeleteObjectTagging permission. For more information, see Attach a custom policy to a RAM user.

Sample code

The following code provides an example on how to delete the tags of an object:

using Aliyun.OSS;
// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to 
var endpoint = "yourEndpoint";
// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
var accessKeyId = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_ID");
var accessKeySecret = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_SECRET");
// Specify the name of the bucket. Example: examplebucket. 
var bucketName = "examplebucket";
// Specify the full path of the object. Do not include the bucket name in the full path. Example: exampledir/exampleobject.txt. 
var objectName = "exampledir/exampleobject.txt";
// Create an OSSClient instance. 
var client = new OssClient(endpoint, accessKeyId, accessKeySecret);
    // Delete the tags of the object. 
    Console.WriteLine("delete objects tagging succeeded");
catch (Exception ex)
    Console.WriteLine("delete objects failed. {0}", ex.Message);


For more information about the API operation that you can call to delete the tags of an object, see DeleteObjectTagging.