BlobStorage.Advanced.GetContainerSasUri C# (CSharp) Method

        private static string GetContainerSasUri(CloudBlobContainer container, string storedPolicyName = null)
        {
            string sasContainerToken;

            // If no stored policy is specified, create a new access policy and define its constraints.
            if (storedPolicyName == null)
            {
                // Note that the SharedAccessBlobPolicy class is used both to define the parameters of an ad-hoc SAS, and 
                // to construct a shared access policy that is saved to the container's shared access policies. 
                SharedAccessBlobPolicy adHocPolicy = new SharedAccessBlobPolicy()
                {
                    // When the start time for the SAS is omitted, the start time is assumed to be the time when the storage service receives the request. 
                    // Omitting the start time for a SAS that is effective immediately helps to avoid clock skew.
                    SharedAccessExpiryTime = DateTime.UtcNow.AddHours(24),
                    Permissions = SharedAccessBlobPermissions.Write | SharedAccessBlobPermissions.List
                };

                // Generate the shared access signature on the container, setting the constraints directly on the signature.
                sasContainerToken = container.GetSharedAccessSignature(adHocPolicy, null);

                Console.WriteLine("SAS for blob container (ad hoc): {0}", sasContainerToken);
                Console.WriteLine();
            }
            else
            {
                // Generate the shared access signature on the container. In this case, all of the constraints for the
                // shared access signature are specified on the stored access policy, which is provided by name.
                // It is also possible to specify some constraints on an ad-hoc SAS and others on the stored access policy.
                sasContainerToken = container.GetSharedAccessSignature(null, storedPolicyName);

                Console.WriteLine("SAS for blob container (stored access policy): {0}", sasContainerToken);
                Console.WriteLine();
            }

            // Return the URI string for the container, including the SAS token.
            return container.Uri + sasContainerToken;
        }