/// <summary>
/// Download the file to a local file.
/// </summary>
/// <param name="blob"></param>
/// <param name="fileCreatedReceiver">Object that will receive a notification once the file is created.</param>
public async Task DownloadFileFromBlob(CloudBlob blob, IFileCreated fileCreatedReceiver = null)
{
CloudBlockBlob blockBlob = await GetBlockBlob(blob);
string filename = App.FileManager.CreateNewFilenameForDownloads(blob.Name);
using (var fileStream = File.OpenWrite(filename))
{
await blockBlob.DownloadToStreamAsync(fileStream);
}
fileCreatedReceiver?.FileCreated(filename);
}
/// <summary>
/// Download the blob and return the string value.
/// If the Content Type isn't that of text, an empty string will be returned.
/// </summary>
/// <param name="blob"></param>
/// <param name="saveToTempFile">Set this to TRUE if you want the contents of the text to be saved in a temp-file.</param>
/// <param name="fileCreatedReceiver">Object that will receive a notification once the file is created. This is only active is "saveToTempFile" is set to TRUE.</param>
/// <returns></returns>
public async Task <String> DownloadTextContentFromBlob(CloudBlob blob, bool saveToTempFile = false, IFileCreated fileCreatedReceiver = null)
{
if (!blob.Properties.ContentType.Equals(Constants.BlobTextContentType))
{
return(String.Empty);
}
CloudBlockBlob blockBlob = await GetBlockBlob(blob);
string text = String.Empty;
using (var memoryStream = new MemoryStream())
{
await blockBlob.DownloadToStreamAsync(memoryStream);
text = Encoding.UTF8.GetString(memoryStream.ToArray());
}
if (saveToTempFile)
{
App.FileManager.CreateTempFile();
using (var file = new StreamWriter(App.FileManager.TempTxtFile))
{
await file.WriteLineAsync(text);
}
fileCreatedReceiver?.FileCreated(App.FileManager.TempTxtFile);
}
return(text);
}
