AzureWebFarm.Helpers.AzureRoleEnvironment.CreateIfNotExist C# (CSharp) Метод

        private static void CreateIfNotExist(this CloudBlob blob)
        {
            try
            {
                blob.UploadByteArray(new byte[0], new BlobRequestOptions {AccessCondition = AccessCondition.IfNoneMatch("*")});
            }
            catch (StorageClientException ex)
            {
                if (ex.ErrorCode != StorageErrorCode.BlobAlreadyExists && ex.StatusCode != HttpStatusCode.PreconditionFailed)
                    throw;
            }
        }