Blob Policy Expiration

Thank you Anupam , Jefferson 

Please suggest me a any blog to refer impimentation.

You can use Azure Event Grid, for trigger a notification for Azure blob policy expiration. You will need to create an event subscription and configure it to listen for "Blob Policy Expiration" events.

Generating SAS for container using C# code:

string containerName = "mycontainer";
string connectionString = "DefaultEndpointsProtocol=https;AccountName=myAccount;AccountKey=myKey";

// Create a BlobContainerClient object
BlobContainerClient container = new BlobContainerClient(connectionString, containerName);

// Create a SharedAccessBlobPolicy object that expires in one hour
SharedAccessBlobPolicy policy = new SharedAccessBlobPolicy
{
    SharedAccessExpiryTime = DateTime.UtcNow.AddHours(1),
    Permissions = SharedAccessBlobPermissions.Read
};

// Generate a SAS token
string sas = container.GetSharedAccessSignature(policy);

Hello,

When a blob policy expires, you can use Azure Event Grid to trigger a notification.