private IMobileServiceSyncTable<TodoItem> todoTable = App.MobileService.GetSyncTable<TodoItem>(); // offline sync
public async Task DeleteTodoItem(TodoItem todoItem)
{
// This code deletes a TodoItem from the database.
await todoTable.DeleteAsync(todoItem);
await SyncWithImagesAsync(); // offline sync
}
public async Task DeleteTodoItem(TodoItem todoitem)
{
var item = (from t in _cache
where t.Id == todoitem.Id
select t).FirstOrDefault();
_cache.Remove(item);
await _fileService.WriteAsync<Models.TodoItem>(cachekey, _cache);
}
public async Task InsertTodoItem(TodoItem todoItem)
{
try
{
// This code inserts a new TodoItem into the database.
await todoTable.InsertAsync(todoItem);
}
catch (Exception)
{
throw;
}
//await SyncAsync(); // offline sync
}
public async Task InsertTodoItem(TodoItem todoItem)
{
try
{
if (todoItem.ImageUploadPending)
{
// Set blob properties of TodoItem.
todoItem.ContainerName = "todoitemimages";
// Use a unigue GUID to avoid collisions.
todoItem.ResourceName = Guid.NewGuid().ToString();
}
// This code inserts a new TodoItem into the database.
await todoTable.InsertAsync(todoItem);
}
catch (Exception)
{
throw;
}
await SyncWithImagesAsync(); // offline sync
}
public async Task InsertTodoItem(TodoItem item)
{
_cache.Add(item);
await _fileService.WriteAsync<Models.TodoItem>(cachekey, _cache);
}
private async Task UploadImage(TodoItem todoItem)
{
// If we have a returned SAS, then upload the blob.
if (!string.IsNullOrEmpty(todoItem.SasQueryString))
{
// Get the URI generated that contains the SAS
// and extract the storage credentials.
StorageCredentials cred = new StorageCredentials(todoItem.SasQueryString);
// Instantiate a Blob store container based on the info in the returned item.
CloudBlobContainer container = new CloudBlobContainer(
new Uri(string.Format("https://{0}/{1}",
todoItem.ImageUri.Host, todoItem.ContainerName)), cred);
// Get the new local image as a stream.
StorageFile media = await StorageFile.GetFileFromApplicationUriAsync(new Uri(todoItem.LocalImageUri));
using (var inputStream = await media.OpenReadAsync())
{
// Upload the new image as a BLOB from the stream.
CloudBlockBlob blobFromSASCredential =
container.GetBlockBlobReference(todoItem.ResourceName);
await blobFromSASCredential.UploadFromStreamAsync(inputStream);
}
// Clear the flag on the item and related fields
todoItem.ImageUploadPending = false;
todoItem.LocalImageUri = string.Empty;
todoItem.SasQueryString = string.Empty;
todoItem.ResourceName = string.Empty;
// This code updates a TodoItem in the local database.
await todoTable.UpdateAsync(todoItem);
await SyncAsync();
}
}
public async Task UpdateTodoItem(TodoItem todoItem)
{
if (todoItem.ImageUploadPending)
{
// Set blob properties of TodoItem.
todoItem.ContainerName = "todoitemimages";
// Use a unigue GUID to avoid collisions.
todoItem.ResourceName = Guid.NewGuid().ToString();
}
// This code updates a TodoItem in the local database.
await todoTable.UpdateAsync(todoItem);
await SyncWithImagesAsync(); // offline sync
}
public async Task UpdateTodoItem(TodoItem todoItem)
{
// This code updates a TodoItem in the database.
await todoTable.UpdateAsync(todoItem);
//await SyncAsync(); // offline sync
}
