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  • Object Storage Service
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    Object Storage Service

    • Product Introduction
      • What is OSS?
      • Benefits
      • Functions
      • Scenarios
      • Limits
    • Pricing
      • Billing items
    • Quick Start
      • Get started with Object Storage Service
      • Sign up for OSS
      • Create a bucket
      • Upload an object
      • Download an object
      • Delete an object
      • Delete a bucket
    • Developer Guide
      • Usage instructions
      • Basic concepts
      • Endpoint
        • Regions and endpoints
        • Endpoints
      • Storage classes
        • Introduction to storage classes
        • Storage Classes Conversion
        • Create and use the Archive bucket
      • Access OSS
        • Quick start
        • OSS-based app development
      • Buckets
        • Create a bucket
        • Set bucket read and write permissions
        • Obtain bucket region information
        • View the bucket list
        • Set a retention strategy
        • Attach a custom domain name
        • Anti-leech settings
        • Cross-origin resource sharing
        • Delete a bucket
      • Upload files
        • Simple upload
        • Form upload
        • Multipart upload
        • Append object
        • Authorized third-party upload
        • Upload callback
      • Download files
        • Simple download
        • Multipart download
        • Authorized third-party download
      • Manage files
        • Object Meta
        • View the object list
        • Copy an object
        • Delete an object
        • Manage object lifecycle
        • Cross-region replication
        • Manage back-to-origin settings
        • SelectObject
      • Signature
        • OSS request process
        • Add a signature to the header
        • Add a signature to a URL
      • Identity authentication
        • What is RAM and STS
        • RAM user
        • Access OSS with a temporary access token provided by STS
      • Access and control
        • Overview
        • ACL
        • Access control based on RAM Policy
          • RAM policy
          • Tutorial: Use RAM Policy to control access to buckets and folders
        • Bucket policy
        • Cross-account authorization
          • Overview
          • Tutorial:Authorize a RAM user under another Alibaba Cloud account by adding a bucket policy
          • Tutorial: Grant cross-account bucket permissions
      • Manage logs
        • Set access logging
      • Data encryption
        • Server-side encryption
        • Introduction to client-side encryption SDK
      • Static website hosting
        • Configure static website hosting
        • Tutorial: Host a static website using a custom domain name
      • Monitoring service
        • Monitoring service overview
        • Monitoring service user guide
        • Alarm service user guide
        • Metric item reference 
        • Monitoring indicators reference
        • Service monitoring, diagnosis, and troubleshooting
      • Cloud data processing
    • SDK Reference
      • Introduction
      • Java
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Bucket
        • Manage a bucket
        • Upload objects
          • Overview
          • Simple upload
          • Form upload
          • Append upload
          • Resumable upload
          • Multipart upload
          • Upload progress bars
          • Upload callback
        • Download objects
          • Overview
          • Streaming download
          • Download to your local file
          • Range download
          • Resumable download
          • Conditional download
          • Download progress bars
        • Manage objects
          • Overview
          • Determine whether a specified object exists
          • Manage ACL for an object
          • Manage Object Meta
          • List objects
          • Delete objects
          • Copy objects
          • Restore an archive object
          • Manage a symbolic link
        • Data security
        • Authorized access
        • Manage lifecycle rules
        • CORS
        • Set logging
        • Static website hosting
        • Anti-leech
        • Cross-region replication
        • Image processing
        • Exception handling
        • FAQ
      • Python
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Bucket
        • Upload objects
          • Overview
          • Simple upload
          • Append upload
          • Resumable upload
          • Multipart upload
          • Upload progress bars
          • Upload callback
        • Download objects
          • Overview
          • Streaming download
          • Download to your local file
          • Range download
          • Resumable download
          • Download progress bars
        • Manage objects
          • Overview
          • Determine whether a specified object exists
          • Manage ACL for an object
          • Manage Object Meta
          • List objects
          • Delete objects
          • Copy objects
          • Restore an archive object
          • Manage a symbolic link
        • Authorized access
        • Enable logging in Python SDK
        • Client-side encryption
        • Static website hosting
        • Manage lifecycle rules
        • CORS
        • Set logging
        • Anti-leech
        • Image processing
        • Chinese character and time
        • Exception handling
      • PHP
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Bucket
        • Upload objects
          • Overview
          • Simple upload
          • File upload
          • Append upload
          • Multipart upload
          • Upload callback
        • Download objects
          • Overview
          • Download to your local file
          • Download to your local memory
          • Range download
          • Conditional download
        • Manage objects
          • Overview
          • Determine whether a specified object exists
          • Manage ACL for an object
          • Manage Object Meta
          • List objects
          • Delete objects
          • Copy objects
          • Restore an archive object
          • Manage a symbolic link
          • Enable MD5 verification
        • Authorized access
        • Static website hosting
        • Manage lifecycle rules
        • Set logging
        • CORS
        • Anti-leech
        • Bind a custom domain name
        • Image processing
        • Exception handling
      • Go
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Bucket
        • Upload objects
          • Overview
          • Simple upload
          • Append upload
          • Resumable upload
          • Multipart upload
          • Progress bars
        • Download objects
          • Overview
          • Streaming download
          • Download to your local file
          • Resumable download
          • Conditional download
          • Download a compressed object
          • Progress bars
        • Manage objects
          • Overview
          • Determine whether a specified object exists
          • Manage ACL for an object
          • Manage Object Meta
          • List objects
          • Delete objects
          • Copy objects
          • Restore an archive object
          • Manage a symbolic link
        • Set access permissions
        • Authorized access
        • Manage lifecycle rules
        • Set logging
        • Static website hosting
        • Anti-leech
        • CORS
        • Image processing
        • Error handling
      • C
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Bucket
        • Upload objects
          • Overview
          • Simple upload
          • Append upload
          • Resumable upload
          • Multipart upload
          • Upload progress bars
          • Upload callback
        • Download objects
          • Overview
          • Download an object to a local file
          • Download to your local memory
          • Range download
          • Resumable download
          • Download progress bars
        • Manage objects
          • Overview
          • Manage ACL for an object
          • Manage Object Meta
          • List objects
          • Delete objects
          • Copy objects
          • Restore an archive object
          • Manage a symbolic link
        • Authorized access
        • Manage lifecycle rules
        • Image processing
        • CORS
        • Set logging
        • Anti-leech
        • Static website hosting
        • Error handling
        • FAQ
      • . NET
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Manage a bucket
        • Upload objects
          • Overview
          • Simple upload
          • Append upload
          • Resumable upload
          • Multipart upload
          • Upload progress bars
          • Upload callback
        • Download objects
          • Overview
          • Streaming download
          • Range download
          • Resumable download
          • Download progress bars
        • Manage objects
          • Overview
          • Determine whether a specified object exists
          • Manage ACL for an object
          • Manage Object Meta
          • List objects
          • Delete objects
          • Copy objects
          • Restore an archive object
          • Manage a symbolic link
        • Authorized access
        • Manage lifecycle rules
        • Set logging
        • CORS
        • Anti-leech
        • Image processing
        • Static website hosting
        • Exception handling
      • Android
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Manage buckets
        • Authorized access
        • Access control
        • Exception handling
      • iOS
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Manage buckets
        • Multipart upload
        • Authorized access
        • Access control
        • Exception handling
      • Node. js
        • Installation
        • Quick start
        • Manage a bucket
        • CNAME
        • Use STS to access OSS
        • Set ACLs
        • Manage lifecycle rules
        • Set logging
        • Static website hosting
        • Anti-leech
        • Image processing
        • Exception handling
        • FAQ
      • Browser.js
        • Installation
        • Quick start
        • options
        • Upload objects
        • Download objects
        • Manage objects
        • CNAME
        • Use STS to access OSS
        • Set ACLs
        • Image processing
        • Browser
        • Exception handling
        • FAQ
      • Ruby
        • Installation
        • Quick start
        • Manage buckets
        • Upload objects
        • Download objects
        • Manage objects
        • CNAME
        • Use STS to access OSS
        • Set ACLs
        • Manage lifecycle rules
        • Set logging
        • Static website hosting
        • Anti-leech
        • CORS
        • Exception handling
        • Application of Rails
      • Media-C
        • Preface
        • Installation
        • Initialization
        • Client operations
        • Server operations
        • HLS basic interfaces
        • HLS encapsulated interfaces
        • Scenarios
        • FAQ
      • Download SDK
        • OSS SDK
        • Java SDK
        • Python SDK
        • Android SDK
        • iOS SDK
        • PHP SDK
        • C SDK
        • Media C SDK
        • .NET SDK
    • API Reference
      • Overview
      • API overview
      • Definitions of common HTTP headers
      • Access control
        • User signature authentication
        • Add a signature to the header
        • Add a signature to a URL
        • Bucket access control
      • Service operations
        • GetService (ListBuckets)
      • Bucket operations
        • PutBucket
        • PutBucketACL
        • PutBucketLogging
        • PutBucketWebsite
        • GetBucketWebsite
        • PutBucketReferer
        • PutBucketLifecycle
        • GetBucket (ListObject)
        • GetBucketAcl
        • GetBucketLocation
        • GetBucketInfo
        • GetBucketLogging
        • GetBucketReferer
        • GetBucketLifecycle
        • DeleteBucket
        • DeleteBucketLogging
        • DeleteBucketWebsite
        • DeleteBucketLifecycle
      • Object operations
        • PutObject
        • CopyObject
        • GetObject
        • AppendObject
        • DeleteObject
        • DeleteMultipleObjects
        • HeadObject
        • GetObjectMeta
        • PutObjectACL
        • GetObjectACL
        • PostObject
        • Callback
        • PutSymlink
        • GetSymlink
        • RestoreObject
        • SelectObject
      • Multipart upload operations
        • Introduction
        • InitiateMultipartUpload
        • UploadPart
        • UploadPartCopy
        • CompleteMultipartUpload
        • AbortMultipartUpload
        • ListMultipartUploads
        • ListParts
      • Cross-Origin Resource Sharing
        • Introduction
        • PutBucketcors
        • GetBucketcors
        • DeleteBucketcors
        • OptionObject
      • LiveChannel-related operations
        • Overview
        • Push RTMP streams using a URL and signature
        • PutLiveChannelStatus
        • PutLiveChannel
        • GetVodPlaylist
        • PostVodPlaylist
        • GetLiveChannelStat
        • GetLiveChannelInfo
        • GetLiveChannelHistory
        • ListLiveChannel
        • DeleteLiveChannel
        • FAQ
    • Console User Guide
      • Log on to the OSS console as a RAM user
      • Log on to OSS console
      • Manage buckets
        • Bucket overview
        • Create a bucket
        • Delete a bucket
        • Change bucket ACL
        • Enable pay-by-requester mode for a bucket
        • Manage a domain
          • Attach a custom domain name
          • Attach a CDN acceleration domain name
          • Certificate hosting
        • Host a static website
        • Set anti-leech
        • Set a retention strategy
        • Configure CORS rules
        • Set lifecycle
        • Configure cross-region replication
        • Set back-to-origin rules
      • Manage objects
        • Overview
        • Upload objects
        • Create a folder
        • Search for objects
        • Change object ACL
        • Use bucket policies to authorize other users to access OSS resources
        • Download an object
        • Set an HTTP header
        • Delete an object
        • Delete a folder
        • Set a symbolic link
      • Manage logs
        • Set logging
        • Log analysis
      • Manage fragments
      • Check resource usage
    • Best Practices
      • Migrate data to OSS
        • Migrate data from Amazon S3 to Alibaba Cloud OSS
        • Use OssImport to migrate data
        • Back up an HDFS to OSS for disaster tolerance
        • Migrate data from AWS S3 to Alibaba Cloud OSS by using IPSec VPN and Express Connect
      • Direct upload to OSS from Web
        • Overview of direct transfer on Web client
        • Direct transfer after adding a signature on the server
      • Application server
        • Set up direct data transfer for mobile apps
        • Permission control
        • Set up data callback for mobile apps
      • Data processing and analysis
        • EMR+OSS: Separated storage and computing for offline computing
        • Construct a data warehouse by using OSS and MaxCompute
      • Data backup and recovery
        • Back up buckets
      • Bucket management
        • Cross-origin resource sharing (CORS)
        • Storage class conversion
        • Anti-leech
        • Static website hosting
      • Data security
        • Check data transmission integrity by using 64-bit CRC
        • Protect data by performing server-side encryption
      • OSS resource monitoring and alarm service
      • Mobile Gaming - Security Token Service with Object Storage Service
      • OSS performance and scalability best practice
      • OssDemo for Android
        • OssDemo introduction
        • Use the setup application server
        • Upload a file
        • Image processing
      • Terraform
        • Introduction
        • Use Terraform to manage OSS
    • Data Processing
      • Image Processing
        • Image processing
        • Image processing access rules
        • Resize images
        • Crop images
          • Incircle
          • Crop
          • Indexed cut
          • Rounded rectangle
        • Rotate images
          • Adaptive orientation
          • Rotate
        • Apply effects
          • Blur
          • Brightness
          • Contrast
          • Sharpen
        • Convert formats
          • Format conversion
          • Gradual display
          • Quality Transformation
        • Add watermarks
        • Obtain image information
          • Retrieve dominant image tones
          • Obtain information
        • Response to errors
        • Image style
        • Source image protection
        • Save processing result
        • FAQ on using old and new versions of APIs and domain names
      • Video intercept
    • Tools
      • OSS tools
      • ossbrowser
        • Quick start
        • Permission management
      • ossutil
        • Quick Start
        • View all supported options
        • Bucket-related commands
        • Object-related commands
        • Multipart-related commands
      • ossimport
        • Architecture and configuration
        • Standalone deployment
        • Distributed deployment
        • Data migration
        • FAQ
      • RAM Policy Editor
      • ossftp
        • Quick installation for OSS FTP
        • How to store remote attachments to your OSS instance with Discuz
        • How to store remote attachments to your OSS instance with PHPWind
        • How to store remote attachments to your OSS instance with WordPress
        • How to integrate RAM for file sharing
      • ossfs
        • Quick installation
        • FAQ
      • osscmd
        • Quick installation
        • Example
        • Bucket commands
        • Object commands
        • Multipart commands
      • ossprobe
    • Errors and Troubleshooting
      • OSS error response
      • Network connection timeout handling
      • PostObject
      • OSS permission
      • Referer
      • Upload callback
      • STS common errors and troubleshooting
      • OSS CORS
      • OSS 403
    • FAQ
      • Data migration/synchronization
      • Data protection
      • Domain/network
      • Bucket management
      • Object management
      • Signature
      • API/SDK
    • General Reference
      • Guidelines for the use of documentation
        • Alibaba Cloud documentation
        • Instructions for open source documentation
          • Open-Source Documentation Code of Conduct
          • Editing Open-Source Documentation
      • Alibaba Cloud console
      • Regions and Zones
      • Service limits
      • Best practice of primary account security
      • Create an AccessKey
      • ICP Filing
      • Glossary

Overview

Last Updated: Nov 13, 2018 Edit

OSS .NET SDK provides the following download methods:

  • Streaming download
  • Range download
  • Resumable download

You can view the download progress shown in download progress bars.

Download PDF
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