BlockBlobClient.UploadAsync Method
Definition
Important
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The UploadAsync(Stream, BlobUploadOptions, CancellationToken) operation overwrites the contents of the blob, creating a new block blob if none exists. Overwriting an existing block blob replaces any existing metadata on the blob.
Set access conditions through Conditions to avoid overwriting existing data.
Partial updates are not supported with UploadAsync(Stream, BlobUploadOptions, CancellationToken); the content of the existing blob is overwritten with the content of the new blob. To perform a partial update of the content of a block blob, use the Azure.Storage.Blobs.Specialized.BlockBlobClient.StageBlock(System.String,System.IO.Stream,System.Byte[],Azure.Storage.Blobs.Models.BlobRequestConditions,System.IProgress{System.Int64},System.Threading.CancellationToken) and CommitBlockListAsync(IEnumerable<String>, CommitBlockListOptions, CancellationToken) operations.
For more information, see Put Blob.
public virtual System.Threading.Tasks.Task<Azure.Response<Azure.Storage.Blobs.Models.BlobContentInfo>> UploadAsync (System.IO.Stream content, Azure.Storage.Blobs.Models.BlobUploadOptions options, System.Threading.CancellationToken cancellationToken = default);abstract member UploadAsync : System.IO.Stream * Azure.Storage.Blobs.Models.BlobUploadOptions * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Azure.Response<Azure.Storage.Blobs.Models.BlobContentInfo>>
override this.UploadAsync : System.IO.Stream * Azure.Storage.Blobs.Models.BlobUploadOptions * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Azure.Response<Azure.Storage.Blobs.Models.BlobContentInfo>>Public Overridable Function UploadAsync (content As Stream, options As BlobUploadOptions, Optional cancellationToken As CancellationToken = Nothing) As Task(Of Response(Of BlobContentInfo))Parameters
- options
- BlobUploadOptions
Optional parameters.
- cancellationToken
- CancellationToken
Optional CancellationToken to propagate notifications that the operation should be cancelled.
Returns
A Response<T> describing the state of the updated block blob.
Remarks
A RequestFailedException will be thrown if a failure occurs.
