private async void PagePrev()
{
var queryObject = new BlobManipulationData();
if (currentPage > 0)
{
queryObject.Skip = 10 * --currentPage;
}
else
{
queryObject.Skip = 0;
}
queryObject.Take = PAGING_TAKE;
queryObject.ContainerName = "testcontainer";
var dataToken = JToken.FromObject(queryObject);
var blobsJToken = await App.MobileService.InvokeApiAsync("pageblobs", dataToken);
var blobs = JsonConvert.DeserializeObject(blobsJToken.ToString());
var source = blobsJToken.Values <string>("name").ToList <string>();
this.lstBlobs.ItemsSource = source;
}
private async void Upld()
{
var filePicker = new FileOpenPicker();
filePicker.SuggestedStartLocation = PickerLocationId.ComputerFolder;
filePicker.FileTypeFilter.Clear();
filePicker.FileTypeFilter.Add("*");
var selectedFile = await filePicker.PickSingleFileAsync();
if (selectedFile != null)
{
var stream = await selectedFile.OpenStreamForReadAsync();
stream.Position = 0;
var fileData = new byte[stream.Length];
await stream.ReadAsync(fileData, 0, (int)stream.Length);
var queryObject = new BlobManipulationData();
queryObject.BlobName = selectedFile.Name;
queryObject.BlobData = fileData;
queryObject.ContainerName = "testcontainer";
var dataToken = JToken.FromObject(queryObject);
await App.MobileService.InvokeApiAsync("uploadblob", dataToken);
}
}
public async Task <IEnumerable <CloudBlockBlob> > PageBlobsInContainer(BlobManipulationData data)
{
await InitBlobContainer(data);
var blobs = container.ListBlobs().OfType <CloudBlockBlob>().Skip(data.Skip).Take(data.Take);
return(blobs);
}
public async Task DeleteBlob(BlobManipulationData data)
{
await InitBlobContainer(data);
var blob = container.GetBlockBlobReference(data.BlobName);
await blob.DeleteIfExistsAsync();
}
public async Task <IEnumerable <CloudBlockBlob> > GetAllBlobsInContainer(BlobManipulationData data)
{
await InitBlobContainer(data);
var blobs = container.ListBlobs().OfType <CloudBlockBlob>();
return(blobs);
}
public async Task UploadBlob(BlobManipulationData data)
{
await InitBlobContainer(data);
var blob = container.GetBlockBlobReference(data.BlobName);
await blob.UploadFromByteArrayAsync(data.BlobData, 0, data.BlobData.Length);
}
public async Task <int> GetBlobCount(BlobManipulationData data)
{
return(await Task.Run <int>(async() => {
await InitBlobContainer(data);
//Lazy. Therefore convert that thing to a list.
return container.ListBlobs().ToList().Count;
}));
}
private async void Del(string blobName)
{
var queryObject = new BlobManipulationData();
queryObject.BlobName = queryObject.BlobName = (string)lstBlobs.SelectedValue;
queryObject.ContainerName = "testcontainer";
var dataToken = JToken.FromObject(queryObject);
var blobsJToken = await App.MobileService.InvokeApiAsync("deleteblob", dataToken);
}
/// <summary>
/// Initializes the BLOB container.
/// </summary>
/// <param name="data">The data.</param>
/// <returns></returns>
private async Task InitBlobContainer(BlobManipulationData data)
{
var storageConnection = Services.Settings["StorageConnectionString"];
storageAccount = CloudStorageAccount.Parse(storageConnection);
blobClient = storageAccount.CreateCloudBlobClient();
container = blobClient.GetContainerReference(data.ContainerName);
await container.CreateIfNotExistsAsync();
}
private async Task LoadFirstTenBlobEntries()
{
var queryObject = new BlobManipulationData();
queryObject.Skip = PAGING_SKIP;
queryObject.Take = PAGING_TAKE;
queryObject.ContainerName = "testcontainer";
var dataToken = JToken.FromObject(queryObject);
var blobsJToken = await App.MobileService.InvokeApiAsync("pageblobs", dataToken);
var blobs = JsonConvert.DeserializeObject(blobsJToken.ToString());
var source = blobsJToken.Values <string>("name").ToList <string>();
this.lstBlobs.ItemsSource = source;
}
public async Task RenameBlob(BlobManipulationData data)
{
await InitBlobContainer(data);
var blob = container.GetBlockBlobReference(data.BlobName);
var exists = await blob.ExistsAsync();
if (exists)
{
var renameTo = container.GetBlockBlobReference(data.NewBlobName);
//copy the blob to rename to the new one
await renameTo.StartCopyFromBlobAsync(blob);
//delete the existing blob
await blob.DeleteAsync();
}
}
public async Task <byte[]> DownloadBlob(BlobManipulationData data)
{
return(await Task.Run <byte[]>(() => {
var storageConnection = Services.Settings["StorageConnectionString"];
storageAccount = CloudStorageAccount.Parse(storageConnection);
blobClient = storageAccount.CreateCloudBlobClient();
container = blobClient.GetContainerReference(data.ContainerName);
var blob = container.GetBlockBlobReference(data.BlobName);
blob.FetchAttributes();
var blobData = new byte[blob.Properties.Length];
blob.DownloadToByteArray(blobData, 0);
return blobData;
}));
}
private async void Dwnld(string blobName)
{
var queryObject = new BlobManipulationData();
queryObject.BlobName = (string)lstBlobs.SelectedValue;
queryObject.ContainerName = "testcontainer";
var dataToken = JToken.FromObject(queryObject);
var blobsJToken = await App.MobileService.InvokeApiAsync("dowloadblob", dataToken);
var blobData = blobsJToken.ToObject <byte[]>();
StorageFolder folder = Windows.Storage.ApplicationData.Current.LocalFolder;
StorageFile storageFile = await folder.CreateFileAsync(queryObject.BlobName, CreationCollisionOption.ReplaceExisting);
var stream = await storageFile.OpenStreamForWriteAsync();
await stream.WriteAsync(blobData, 0, blobData.Length);
stream.Dispose();
}
