Web API : Read the image send from the app - c#-4.0

Question

I need to read the file been send from the Ios app to the Azure web api.
I need to upload that to the blob and keep the Uri.
Can anybody suggest me the code to accept the file been send.
/// <summary>
///This is to upload the image file for the user profile.
/// </summary>
///<param name="userRegId"> </param>
///<returns></returns>
[HttpPost]
public Response ImageUpload(int userRegId)
{
try
{
var response = new Response();
if (!Request.Content.IsMimeMultipartContent())
{
response.status = CommonHandler.GetInvalidStatus();
}
else
{
//here i want to read the file and upload it to blob.
string fileName =Request.Files[0].FileName;//unable to do this. Here i want to know ho to read the file
string uniqueBlobName = string.Format("{0}/{1}", constants.pdf, fileName);
CloudBlobClient blobStorage = cloudClasses.CreateOrGetReferenceOfBlobStorage(constants.pdf);
CloudBlockBlob blob = cloudClasses.ClouBblockBlobPropertySetting(blobStorage, uniqueBlobName, ".pdf");
blob.UploadFromStream(Request.Files[0].InputStream);//unable to do this. Here i want to know ho to read the file
response.status = CommonHandler.GetSuccessStatus();
}
return response;
}
catch (Exception ex)
{
_logger.LogError(Log4NetLogger.Category.Exception, "Error in : APIController.ImageUpload :>> Exception message: " + ex.Message);
return new Response { status = CommonHandler.GetFailedStatus(ex.Message) };
}
}

Answer 1

Here is my code,
var streamProvider = new MultipartMemoryStreamProvider();
Request.Content.ReadAsMultipartAsync(streamProvider);
foreach (var content in streamProvider.Contents)
{
if (content != null)
{
if (content.Headers.ContentDisposition.FileName != null)
{
var fileName =
content.Headers.ContentDisposition.FileName.Replace("\"", string.
Empty);
Stream stream = content.ReadAsStreamAsync().Result;
CloudBlobContainer blobStorage = BlobHandler.GetBlobStorage("profileimage");
CloudBlockBlob blob = BlobHandler.BlobPropertySetting(blobStorage,
Guid.NewGuid().ToString().ToLower() +
fileName);
blob.UploadFromStream(stream);
response = ProfileHandler.ImageUpdate(userRegId, blob.Uri);
}
}
}
For the blobHandler
public static CloudBlobContainer GetBlobStorage(string cloudBlobContainerName)
{
CloudBlobContainer container;
try
{
var storageAccount = CloudStorageAccount.FromConfigurationSetting("StorageConnectionString");
CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
container = blobClient.GetContainerReference(cloudBlobContainerName); //profile
container.CreateIfNotExist();
var permissions = container.GetPermissions();
permissions.PublicAccess = BlobContainerPublicAccessType.Container;
container.SetPermissions(permissions);
}
catch (Exception ex)
{
Logger.LogError(Log4NetLogger.Category.Exception, "Error in : BlobHandler.GetBlobStorage :>> Exception message: " + ex.Message);
throw;
}
return container;
}
public static CloudBlockBlob BlobPropertySetting(CloudBlobContainer cloudBlobClientReferenceName, string blobContentName)
{
CloudBlockBlob blob = cloudBlobClientReferenceName.GetBlockBlobReference(blobContentName);
//blob.Properties.ContentType = contentType;
return blob;
}
Hope this will help someone..

Answer 2

Yao Huang Lin wrote a blog post on how to produce a Web API file service backed by Azure blob storage. You can find it here.