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Uploading Objects

Terakhir diperbarui:2024-02-02 14:36:36

    Overview

    This document provides an overview of APIs and SDK code samples related to object upload.
    Simple operations
    API
    Operation
    Description
    Uploading an object
    Uploads an object to a bucket.
    Uploading an object using an HTML form
    Uploads an object using an HTML form.
    Appending parts
    Uploads an object by appending the object by parts.
    Multipart operations
    API
    Operation
    Description
    Querying multipart uploads
    Queries in-progress multipart uploads.
    Initializing a multipart upload operation
    Initializes a multipart upload operation.
    Uploading parts
    Uploads an object in multiple parts.
    Querying uploaded parts
    Queries the uploaded parts of a multipart upload.
    Completing a multipart upload
    Completes the multipart upload of a file.
    Aborting a multipart upload
    Aborts a multipart upload and deletes the uploaded parts.

    Advanced APIs (Recommended)

    Uploading an object

    Description

    The advanced APIs encapsulate the simple upload and multipart upload APIs and can intelligently select the upload method based on file size. They also support checkpoint restart for resuming interrupted operations.
    Note:
    If the file size is less than the multipart upload threshold, simple upload is used. Otherwise, multiple upload is used. The multipart upload threshold is configurable and is 5 MB by default.
    The part size is configurable and is 1 MB by default.
    If your .NET Framework version is 4.0 or earlier, advanced APIs are not available. For more information, please see Backward Compatibility.

    Sample code 1. Uploading a local object via advanced API

    using COSXML.Model.Object;
    using COSXML.Auth;
    using COSXML.Transfer;
    using System;
    using COSXML;
    using System.Threading.Tasks;
    
    namespace COSSnippet
    {
    public class TransferUploadObjectModel {
    
    private CosXml cosXml;
    
    TransferUploadObjectModel() {
    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.
    .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 seconds
    QCloudCredentialProvider qCloudCredentialProvider = new DefaultQCloudCredentialProvider(secretId,
    secretKey, durationSecond);
    
    this.cosXml = new CosXmlServer(config, qCloudCredentialProvider);
    }
    
    /// Upload a file via advanced API
    public async Task TransferUploadFile()
    {
    // Initialize TransferConfig
    TransferConfig transferConfig = new TransferConfig();
    // Set the object size threshold for multipart upload to 10 MB. Default value: 5 MB
    transferConfig.DivisionForUpload = 10 * 1024 * 1024;
    // Set the size of each object part for multipart upload to 2 MB. Default value: 1 MB
    transferConfig.SliceSizeForUpload = 2 * 1024 * 1024;
    
    // Initialize TransferManager
    TransferManager transferManager = new TransferManager(cosXml, transferConfig);
    // Bucket name in the format of `BucketName-APPID`. You can get APPID by referring to https://console.tencentcloud.com/developer.
    String bucket = "examplebucket-1250000000";
    String cosPath = "exampleobject"; // Location identifier of the object in the bucket, i.e., the object key
    String srcPath = @"temp-source-file";// Absolute path to the local file
    
    // Upload an object
    COSXMLUploadTask uploadTask = new COSXMLUploadTask(bucket, cosPath);
    uploadTask.SetSrcPath(srcPath);
    
    uploadTask.progressCallback = delegate (long completed, long total)
    {
    Console.WriteLine(String.Format("progress = {0:##.##}%", completed * 100.0 / total));
    };
    
    try {
    COSXML.Transfer.COSXMLUploadTask.UploadTaskResult result = await
    transferManager.UploadAsync(uploadTask);
    Console.WriteLine(result.GetResultInfo());
    string eTag = result.eTag;
    } catch (Exception e) {
    Console.WriteLine("CosException: " + e);
    }
    
    }
    
    static void Main(string[] args)
    {
    TransferUploadObjectModel m = new TransferUploadObjectModel();
    /// Upload an object via advanced API
    m.TransferUploadFile().Wait();
    // .cssg-methods-pragma
    }
    }
    }
    Note:
    For the complete sample, go to GitHub.
    After the upload, you can generate a download URL for the uploaded file with the same key. For detailed directions, please see Generating Pre-signed Links. Please note that for private-read files, the download URL is only valid for a limited period of time.

    Sample code 2. Uploading binary data

    using COSXML.Model.Object;
    using COSXML.Auth;
    using COSXML.Transfer;
    using System;
    using COSXML;
    
    namespace COSSnippet
    {
    public class TransferUploadObjectModel {
    
    private CosXml cosXml;
    
    TransferUploadObjectModel() {
    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.
    .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 seconds
    QCloudCredentialProvider qCloudCredentialProvider = new DefaultQCloudCredentialProvider(secretId,
    secretKey, durationSecond);
    
    this.cosXml = new CosXmlServer(config, qCloudCredentialProvider);
    }
    
    /// Upload binary data
    public void TransferUploadBytes()
    {
    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";
    string cosPath = "exampleObject"; // Object key
    byte[] data = new byte[1024]; // Binary data
    PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, cosPath, data);
    // Initiate an upload.
    PutObjectResult result = cosXml.PutObject(putObjectRequest);
    Console.WriteLine(result.GetResultInfo());
    }
    catch (COSXML.CosException.CosClientException clientEx)
    {
    // Request failed
    Console.WriteLine("CosClientException: " + clientEx);
    }
    catch (COSXML.CosException.CosServerException serverEx)
    {
    // Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
    }
    }
    
    static void Main(string[] args)
    {
    TransferUploadObjectModel m = new TransferUploadObjectModel();
    
    /// Upload binary data via an advanced API
    m.TransferUploadBytes();
    }
    }
    }
    Note:
    For the complete sample, go to GitHub.
    After the upload, you can generate a download URL for the uploaded file with the same key. For detailed directions, please see Generating Pre-signed Links. Please note that for private-read files, the download URL is only valid for a limited period of time.

    Sample code 3. Uploading with a file stream

    using COSXML.Model.Object;
    using COSXML.Utils;
    using COSXML.Auth;
    using System;
    using COSXML;
    using System.IO;
    
    namespace COSSnippet
    {
    public class PutObjectModel {
    
    private CosXml cosXml;
    
    PutObjectModel() {
    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.
    .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 seconds
    QCloudCredentialProvider qCloudCredentialProvider = new DefaultQCloudCredentialProvider(secretId,
    secretKey, durationSecond);
    
    this.cosXml = new CosXmlServer(config, qCloudCredentialProvider);
    }
    
    /// Uploading with a file stream, supported from v5.4.24
    public void PutObjectStream()
    {
    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";
    string key = "exampleobject"; // Object key
    string srcPath = @"temp-source-file";// Absolute path of the local file
    // Open the read-only file stream object
    FileStream fileStream = new FileStream(srcPath, FileMode.Open, FileAccess.Read);
    // Assemble the upload request, where offset sendLength is optional
    long offset = 0L;
    long sendLength = fileStream.Length;
    PutObjectRequest request = new PutObjectRequest(bucket, key, fileStream, offset, sendLength);
    // Set the progress callback
    request.SetCosProgressCallback(delegate (long completed, long total)
    {
    Console.WriteLine(String.Format("progress = {0:##.##}%", completed * 100.0 / total));
    });
    // Execute the request
    PutObjectResult result = cosXml.PutObject(request);
    // Close the file stream
    fileStream.Close();
    // Object ETag
    string eTag = result.eTag;
    // crc64ecma value of the object
    string crc64ecma = result.crc64ecma;
    // Print the request result.
    Console.WriteLine(result.GetResultInfo());
    }
    catch (COSXML.CosException.CosClientException clientEx)
    {
    // Request failed
    Console.WriteLine("CosClientException: " + clientEx);
    }
    catch (COSXML.CosException.CosServerException serverEx)
    {
    // Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
    }
    }
    
    static void Main(string[] args)
    {
    PutObjectModel m = new PutObjectModel();
    /// Upload the object with a file stream
    m.PutObjectStream();
    }
    }
    }
    Note:
    Uploading with a file stream is supported from v5.4.24. To download the latest version of SDK, go to Releases or refer to Getting Started.
    For the version changelog, see GitHub.
    For the complete sample, go to GitHub.
    After the upload, you can generate a download URL for the uploaded file with the same key. For detailed directions, please see Generating Pre-signed Links. Please note that for private-read files, the download URL is only valid for a limited period of time.

    Sample code 4. Suspending, resuming, and canceling an upload

    To suspend an upload, use the code below:
    uploadTask.Pause();
    To resume a suspended download, use the code below:
    uploadTask.Resume();
    To cancel an upload, use the code below:
    uploadTask.Cancel();
    Note:
    For the complete sample, go to GitHub.

    Sample code 5. Uploading multiple objects

    TransferConfig transferConfig = new TransferConfig();
    
    // Initialize TransferManager
    TransferManager transferManager = new TransferManager(cosXml, transferConfig);
    // Bucket name in the format of `BucketName-APPID`. You can get APPID by referring to https://console.tencentcloud.com/developer.
    string bucket = "examplebucket-1250000000";
    
    for (int i = 0; i < 5; i++) {
    // Upload an object
    string cosPath = "exampleobject" + i; // Location identifier of an object in the bucket, i.e. the object key
    string srcPath = @"temp-source-file";// Absolute path of the local file
    COSXMLUploadTask uploadTask = new COSXMLUploadTask(bucket, cosPath);
    uploadTask.SetSrcPath(srcPath);
    await transferManager.UploadAsync(uploadTask);
    }

    Sample 6. Creating a directory

    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";
    string cosPath = "dir/"; // Object key
    PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, cosPath, new byte[0]);
    
    cosXml.PutObject(putObjectRequest);
    }
    catch (COSXML.CosException.CosClientException clientEx)
    {
    // Request failed
    Console.WriteLine("CosClientException: " + clientEx);
    }
    catch (COSXML.CosException.CosServerException serverEx)
    {
    // Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
    }
    Note:
    For the complete sample, go to GitHub.
    After the upload, you can generate a download URL for the uploaded file with the same key. For detailed directions, please see Generating Pre-signed Links. Please note that for private-read files, the download URL is only valid for a limited period of time.

    Simple Operations

    Uploading an object using simple upload

    Description

    This API (PUT Object) is used to upload an object smaller than 5 GB to a specified bucket. To call this API, you need to have permission to write to the bucket. If the object size is larger than 5 GB, please use Multipart Upload or Advanced APIs for the upload.
    Note:
    The key (filename) cannot end with /; otherwise, it will be identified as a folder.
    Each root account (APPID) can have up to 1,000 bucket ACLs and an unlimited number of object ACLs. Do not configure ACLs for an object during upload if you don’t need to control access to it. The object will inherit the permissions of its bucket by default.
    Due to the limitations of the underlying SDK dependent language components, the general upload API may encounter unexpected exceptions in some environments when it is used to upload objects over 2 GB at a time. Therefore, we recommend you use the advanced API or multipart upload to avoid potential problems.

    Sample code

    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";
    string key = "exampleobject"; // Object key
    string srcPath = @"temp-source-file";// Absolute path of the local file
    
    PutObjectRequest request = new PutObjectRequest(bucket, key, srcPath);
    // Set the progress callback
    request.SetCosProgressCallback(delegate (long completed, long total)
    {
    Console.WriteLine(String.Format("progress = {0:##.##}%", completed * 100.0 / total));
    });
    // Execute the request
    PutObjectResult result = cosXml.PutObject(request);
    // Object ETag
    string eTag = result.eTag;
    }
    catch (COSXML.CosException.CosClientException clientEx)
    {
    // Request failed
    Console.WriteLine("CosClientException: " + clientEx);
    }
    catch (COSXML.CosException.CosServerException serverEx)
    {
    // Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
    }
    Note:
    For the complete sample, go to GitHub.
    After the upload, you can generate a download URL for the uploaded file with the same key. For detailed directions, please see Generating Pre-signed Links. Please note that for private-read files, the download URL is only valid for a limited period of time.

    Uploading an object using an HTML form

    Description

    This API is used to upload an object using an HTML form.

    Sample code

    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";
    string key = "exampleobject"; // Object key
    string srcPath = @"temp-source-file";// Absolute path of the local file
    PostObjectRequest request = new PostObjectRequest(bucket, key, srcPath);
    // Set the progress callback
    request.SetCosProgressCallback(delegate (long completed, long total)
    {
    Console.WriteLine(String.Format("progress = {0:##.##}%", completed * 100.0 / total));
    });
    // Execute the request
    PostObjectResult result = cosXml.PostObject(request);
    // Request succeeded
    Console.WriteLine(result.GetResultInfo());
    }
    catch (COSXML.CosException.CosClientException clientEx)
    {
    // Request failed
    Console.WriteLine("CosClientException: " + clientEx);
    }
    catch (COSXML.CosException.CosServerException serverEx)
    {
    // Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
    }
    Note:
    For the complete sample, go to GitHub.

    Appending parts

    Description

    This API is used to upload an object by appending parts of the object.
    Note:
    This feature is supported starting from v5.4.22. For the version changelog, see GitHub.

    Sample code

    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";
    string key = "exampleobject"; // Object key
    string srcPath = @"temp-source-file";// Absolute path of the local file
    
    // Append the first part. 0 is passed in for the appending position, and an appendable object is created
    long next_append_position = 0;
    AppendObjectRequest request = new AppendObjectRequest(bucket, key, srcPath, next_append_position);
    // Set the progress callback
    request.SetCosProgressCallback(delegate (long completed, long total)
    {
    Console.WriteLine(String.Format("progress = {0:##.##}%", completed * 100.0 / total));
    });
    AppendObjectResult result = cosXml.AppendObject(request);
    // Get the next appending position
    next_append_position = result.nextAppendPosition;
    Console.WriteLine(result.GetResultInfo());
    
    // Execute appending and pass in the object end obtained last time
    request = new AppendObjectRequest(bucket, key, srcPath, next_append_position);
    request.SetCosProgressCallback(delegate (long completed, long total)
    {
    Console.WriteLine(String.Format("progress = {0:##.##}%", completed * 100.0 / total));
    });
    result = cosXml.AppendObject(request);
    Console.WriteLine(result.GetResultInfo());
    }
    catch (COSXML.CosException.CosClientException clientEx)
    {
    // Request failed
    Console.WriteLine("CosClientException: " + clientEx);
    }
    catch (COSXML.CosException.CosServerException serverEx)
    {
    // Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
    }
    Note:
    For the complete sample, go to GitHub.

    Multipart Operations

    The multipart upload process is outlined below.

    Performing a multipart upload

    1. Initialize the multipart upload with Initiate Multipart Upload and get the UploadId.
    2. Use the UploadId to upload the parts with Upload Part - Copy.
    3. Complete the multipart upload with Complete Multipart Upload.

    Resuming a multipart upload

    1. If you did not record the UploadId of the multipart upload, you can query the multipart upload job with List Multipart Uploads to get the UploadId of the corresponding file.
    2. Use the UploadId to list the uploaded parts with List Parts.
    3. Use the UploadId to upload the remaining parts with Upload Part.
    4. Complete the multipart upload with Complete Multipart Upload.

    Aborting a multipart upload

    1. If you did not record the UploadId of the multipart upload, you can query the multipart upload job with List Multipart Uploads to get the UploadId of the corresponding file.
    2. Abort the multipart upload and delete the uploaded parts with Abort Multipart Upload.

    Querying multipart uploads

    Description

    This API (List Multipart Uploads) is used to query in-progress multipart uploads in a specified bucket.

    Sample code

    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";
    ListMultiUploadsRequest request = new ListMultiUploadsRequest(bucket);
    // Execute the request
    ListMultiUploadsResult result = cosXml.ListMultiUploads(request);
    // Request succeeded
    Console.WriteLine(result.GetResultInfo());
    }
    catch (COSXML.CosException.CosClientException clientEx)
    {
    // Request failed
    Console.WriteLine("CosClientException: " + clientEx);
    }
    catch (COSXML.CosException.CosServerException serverEx)
    {
    // Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
    }
    Note:
    For the complete sample, go to GitHub.

    Initializing a multipart upload

    Description

    This API is used to initialize a multipart upload operation and get its uploadId.

    Sample code

    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";
    string key = "exampleobject"; // Object key
    InitMultipartUploadRequest request = new InitMultipartUploadRequest(bucket, key);
    // Execute the request
    InitMultipartUploadResult result = cosXml.InitMultipartUpload(request);
    // Request succeeded
    this.uploadId = result.initMultipartUpload.uploadId; // The uploadId to use for subsequent multipart uploads
    Console.WriteLine(result.GetResultInfo());
    }
    catch (COSXML.CosException.CosClientException clientEx)
    {
    // Request failed
    Console.WriteLine("CosClientException: " + clientEx);
    }
    catch (COSXML.CosException.CosServerException serverEx)
    {
    // Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
    }
    Note:
    For the complete sample, go to GitHub.

    Uploading parts

    Description

    This API (Upload Part) is used to upload an object in parts.

    Sample code

    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";
    string key = "exampleobject"; // Object key
    string uploadId = "exampleUploadId"; // uploadId returned when the multipart upload is initialized
    int partNumber = 1; // Part number, increases incrementally starting from 1
    string srcPath = @"temp-source-file";// Absolute path of the local file
    UploadPartRequest request = new UploadPartRequest(bucket, key, partNumber,
    uploadId, srcPath, 0, -1);
    // Set the progress callback
    request.SetCosProgressCallback(delegate (long completed, long total)
    {
    Console.WriteLine(String.Format("progress = {0:##.##}%", completed * 100.0 / total));
    });
    // Execute the request
    UploadPartResult result = cosXml.UploadPart(request);
    // Request succeeded
    // Get the ETag of the returned part for subsequent CompleteMultiUploads.
    this.eTag = result.eTag;
    Console.WriteLine(result.GetResultInfo());
    }
    catch (COSXML.CosException.CosClientException clientEx)
    {
    // Request failed
    Console.WriteLine("CosClientException: " + clientEx);
    }
    catch (COSXML.CosException.CosServerException serverEx)
    {
    // Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
    }
    Note:
    For the complete sample, go to GitHub.

    Querying uploaded parts

    Description

    This API (List Parts) is used to query the uploaded parts of a multipart upload.

    Sample code

    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";
    string key = "exampleobject"; // Object key
    string uploadId = "exampleUploadId"; // uploadId returned when the multipart upload is initialized
    ListPartsRequest request = new ListPartsRequest(bucket, key, uploadId);
    // Execute the request
    ListPartsResult result = cosXml.ListParts(request);
    // Request succeeded
    // List the parts that have been uploaded
    List<COSXML.Model.Tag.ListParts.Part> alreadyUploadParts = result.listParts.parts;
    Console.WriteLine(result.GetResultInfo());
    }
    catch (COSXML.CosException.CosClientException clientEx)
    {
    // Request failed
    Console.WriteLine("CosClientException: " + clientEx);
    }
    catch (COSXML.CosException.CosServerException serverEx)
    {
    // Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
    }
    Note:
    For the complete sample, go to GitHub.

    Completing a multipart upload

    Description

    This API (Complete Multipart Upload) is used to complete the multipart upload of a file.

    Sample code

    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";
    string key = "exampleobject"; // Object key
    string uploadId = "exampleUploadId"; // uploadId returned when the multipart upload is initialized
    CompleteMultipartUploadRequest request = new CompleteMultipartUploadRequest(bucket,
    key, uploadId);
    // Concatenate uploaded parts in ascending order by partNumber.
    request.SetPartNumberAndETag(1, this.eTag);
    // Execute the request
    CompleteMultipartUploadResult result = cosXml.CompleteMultiUpload(request);
    // Request succeeded
    Console.WriteLine(result.GetResultInfo());
    }
    catch (COSXML.CosException.CosClientException clientEx)
    {
    // Request failed
    Console.WriteLine("CosClientException: " + clientEx);
    }
    catch (COSXML.CosException.CosServerException serverEx)
    {
    // Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
    }
    Note:
    For the complete sample, go to GitHub.

    Aborting a multipart upload

    Description

    This API (Abort Multipart Upload) is used to abort a multipart upload and delete the uploaded parts.

    Sample code

    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";
    string key = "exampleobject"; // Object key
    string uploadId = "exampleUploadId"; // uploadId returned when the multipart upload is initialized
    AbortMultipartUploadRequest request = new AbortMultipartUploadRequest(bucket, key, uploadId);
    // Execute the request
    AbortMultipartUploadResult result = cosXml.AbortMultiUpload(request);
    // Request succeeded
    Console.WriteLine(result.GetResultInfo());
    }
    catch (COSXML.CosException.CosClientException clientEx)
    {
    // Request failed
    Console.WriteLine("CosClientException: " + clientEx);
    }
    catch (COSXML.CosException.CosServerException serverEx)
    {
    // Request failed
    Console.WriteLine("CosServerException: " + serverEx.GetInfo());
    }
    Note:
    For the complete sample, go to GitHub.
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