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CloudBlob.UploadFile Method (String, BlobRequestOptions)

Updated: April 24, 2013

[This topic is part of the Microsoft Azure Storage Client Library 1.7, which has been deprecated. See Storage Client Library for the latest version.]

Uploads a file from the file system to a block blob, using a conditional request based on the BlobRequestOptions that you specify.

Namespace: Microsoft.WindowsAzure.StorageClient
Assembly: Microsoft.WindowsAzure.StorageClient (in Microsoft.WindowsAzure.StorageClient.dll)

Dim instance As CloudBlob
Dim fileName As String
Dim options As BlobRequestOptions

instance.UploadFile(fileName, options)

public virtual void UploadFile (
	string fileName,
	BlobRequestOptions options



Type: System.String

The path and file name of the file to upload.


Type: Microsoft.WindowsAzure.StorageClient.BlobRequestOptions

An object that specifies any additional options for the request.

The following code example uploads a file from the local computer to a blob, using the specified blob request options.

static void UploadBlobFromFile(Uri blobEndpoint, string accountName, string accountKey)
    // Create a service client for credentialed-access to the blob.
    CloudBlobClient blobClient = 
        new CloudBlobClient(blobEndpoint, 
            new StorageCredentialsAccountAndKey(accountName, accountKey));
    // Get a reference to a container, which may or may not already exist in the cloud.
    CloudBlobContainer container = blobClient.GetContainerReference("mycontainer");
    // Create a new container in the cloud if one with this container address does not already exist.
    // Get a reference to a blob, which may or may not exist.
    CloudBlob blob = container.GetBlobReference("myfile.txt");
    // Create a BlobRequestOptions object.
    BlobRequestOptions options = new BlobRequestOptions();
    // Use the BlobRequestOptions object to set options for the request.
    // E.g., Specify a retry policy of 10 retries.
    options.RetryPolicy = 
        RetryPolicies.RetryExponential(10, RetryPolicies.DefaultClientBackoff);
    // Upload content to the blob, which will create the blob if it does not already exist.
    // If the operation fails, try it again - up to ten retries before giving up.
    blob.UploadFile("c:\\myfile.txt", options);

The maximum size for a block blob is 200 GB, and a block blob can include no more than 50,000 blocks.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Development Platforms

Windows Vista, Windows 7, Windows Server 2008, Windows 8.1, Windows Server 2012 R2, Windows 8 and Windows Server 2012


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