Delete object tags using C# SDK V1 - Object Storage Service

Object tagging lets you mark objects using key-value pairs. This topic describes how to delete object tags.

Usage notes

In this topic, the public endpoint of the China (Hangzhou) region is used. If you want to access OSS from other Alibaba Cloud services in the same region as OSS, use an internal endpoint. For more information about OSS regions and endpoints, 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 sample code shows how to delete object tags:

using Aliyun.OSS;
using Aliyun.OSS.Common;

// Set yourEndpoint to the endpoint of the region where the bucket is located. For example, if the bucket is in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com.
var endpoint = "yourEndpoint";
// Obtain access credentials from environment variables. Before running this sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set.
var accessKeyId = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_ID");
var accessKeySecret = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_SECRET");
// Specify the bucket name. For example, examplebucket.
var bucketName = "examplebucket";
// Specify the full path of the object. The full path cannot contain the bucket name. For example, exampledir/exampleobject.txt.
var objectName = "exampledir/exampleobject.txt";
// Specify the region where the bucket is located. For example, if the bucket is in the China (Hangzhou) region, set the region to cn-hangzhou.
const string region = "cn-hangzhou";

// Create a ClientConfiguration instance and modify the default parameters as needed.
var conf = new ClientConfiguration();

// Set the signature version to V4.
conf.SignatureVersion = SignatureVersion.V4;

// Create an OssClient instance.
var client = new OssClient(endpoint, accessKeyId, accessKeySecret, conf);
client.SetRegion(region);
try
{
    // Delete the object tags.
    client.DeleteObjectTagging(bucketName,objectName);
    Console.WriteLine("Delete object tagging succeeded.");
}
catch (Exception ex)
{
    Console.WriteLine("Delete object tagging failed. {0}", ex.Message);
}

References

For more information about the DeleteObjectTagging API operation, see DeleteObjectTagging.