I am trying to achieve the following using azures blob storage.
- Upload a file to azure blob storage.
- Then send a http response containing a base64 string of the file.
The strange part is that I can get only one to work as it causes the other to stop working depending on the order of my code.
HttpPostedFile image = Request.Files["froalaImage"];
if (image != null)
{
string fileName = RandomString() + System.IO.Path.GetExtension(image.FileName);
string companyID = Request.Form["companyID"].ToLower();
// Retrieve storage account from connection string.
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(
CloudConfigurationManager.GetSetting("StorageConnectionString"));
// Create the blob client.
CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
// Retrieve reference to a previously created container.
CloudBlobContainer container = blobClient.GetContainerReference(companyID);
// Create the container if it doesn't already exist.
container.CreateIfNotExists();
// Retrieve reference to a blob named "filename".
CloudBlockBlob blockBlob = container.GetBlockBlobReference(fileName);
// Create or overwrite the blob with contents from a local file.
using (image.InputStream)
{
blockBlob.UploadFromStream(image.InputStream);
byte[] fileData = null;
using (var binaryReader = new BinaryReader(image.InputStream))
{
fileData = binaryReader.ReadBytes(image.ContentLength);
}
string base64ImageRepresentation = Convert.ToBase64String(fileData);
// Clear and send the response back to the browser.
string json = "";
Hashtable resp = new Hashtable();
resp.Add("link", "data:image/" + System.IO.Path.GetExtension(image.FileName).Replace(@".", "") + ";base64," + base64ImageRepresentation);
resp.Add("imgID", "BLOB/" + fileName);
json = JsonConvert.SerializeObject(resp);
Response.Clear();
Response.ContentType = "application/json; charset=utf-8";
Response.Write(json);
Response.End();
}
}
The above code will upload the file to azure's blob storage however the base64 string will be empty.
But if I put the line blockBlob.UploadFromStream(image.InputStream); below the line string base64ImageRepresentation = Convert.ToBase64String(fileData);
I will get the base64 string no problem however the file is not uploaded correctly to azure's blob storage.
