gistfile1.cs

public async void RemoveDevices()
{
    CloudTableClient client = account.CreateCloudTableClient();
    CloudTable devicesTable = client.GetTableReference("PushNotificationDeviceTable");

    //// Good Form
    await devicesTable.CreateIfNotExistsAsync();

    // Entity Resolver
    EntityResolver<PushNotificationDevice> deviceResolver = (pk, rk, ts, props, etag) =>
        {
            PushNotificationDevice resolvedEntity = new PushNotificationDevice();
            resolvedEntity.PartitionKey = pk;
            resolvedEntity.RowKey = rk;
            resolvedEntity.Timestamp = ts;
            resolvedEntity.ETag = etag;
            resolvedEntity.ReadEntity(props, null);
            resolvedEntity.PushPlatform = (DevicePlatform)props["PushPlatform"].Int32Value;

            return resolvedEntity;
        };


    // Filter to only get the WNS and C2DM devices.
    string wnsFilterCondition = TableQuery.GenerateFilterConditionForInt("PushPlatform", QueryComparisons.Equal, (int)DevicePlatform.Windows);
    string c2dmFilterCondition = TableQuery.GenerateFilterConditionForInt("PushPlatform", QueryComparisons.Equal, (int)DevicePlatform.C2DM);
    string combinedFilterCondition = TableQuery.CombineFilters(wnsFilterCondition, TableOperators.Or, c2dmFilterCondition);

    TableQuery<PushNotificationDevice> query = new TableQuery<PushNotificationDevice>().Where(combinedFilterCondition);
    TableQuerySegment<PushNotificationDevice> currentSegment = null;
    List<PushNotificationDevice> deviceList = new List<PushNotificationDevice>();

    Console.WriteLine("Fetching all Windows and C2DM devices");
    while (currentSegment == null || currentSegment.ContinuationToken != null)
    {
        currentSegment = await devicesTable.ExecuteQuerySegmentedAsync(query, deviceResolver, currentSegment != null ? currentSegment.ContinuationToken : null);
        deviceList.AddRange(currentSegment.Results);                    
    }

    Console.WriteLine("Generating batches to delete.");

    foreach (PushNotificationDevice device in deviceList)
    {
        TableOperation deleteOperation = TableOperation.Delete(device);

        string deviceType = device.PushPlatform.Equals(DevicePlatform.C2DM) ? "C2DM" : "Windows";
        Console.WriteLine("Deleting a {0} device.", deviceType);

        await devicesTable.ExecuteAsync(deleteOperation);
    }
}