gistfile1.cs

public static long GetUniqueId()  
          {  
            if (_instance != null)  
           {  
              return _instance.NextId("importID");  
            }  
           var storageAccount =  
             CloudStorageAccount.Parse(CloudConfigurationManager.GetSetting("StorageConnectionString"));  
           IOptimisticDataStore blobDataStore = new BlobOptimisticDataStore(storageAccount, AzureCloudStorageServices.GetStorageContainerName());  
           _instance = new UniqueIdGenerator(blobDataStore);  
           return _instance.NextId("importID");  
        }