PurgeMultipleSessions

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//Pre-requisite: Following nuget packages needs to be installed
//Azure.Messaging.ServiceBus

//This code will help to first send multiple session messages to queue and then purge all the different session messages from that same queue within short period of time

using System;
using System.Threading.Tasks;
using Azure.Messaging.ServiceBus;

namespace PurgeSBMessages
{
    class Program
    {
        static async Task Main(string[] args)
        {
            var connectionStr = "<NAMESPACE CONNECTION-STRING>";
            var queueName = "<QueueName>";
            await using var client = new ServiceBusClient(connectionStr);
            var sender = client.CreateSender(queueName);

            for (int i = 0; i < 100; i++) //count of session Id's
            {
                int j = 50; // count of messages per session
                while (j > 0)
                {
                    var message = new ServiceBusMessage();
                    message.SessionId = "abs" + i.ToString();
                    Console.WriteLine(message.SessionId);
                    await sender.SendMessageAsync(message);
                    j -= 1;
                }

            }

            Console.WriteLine("DONE#######################");

            while (true)
            {

                ServiceBusSessionReceiver receiver = await client.AcceptNextSessionAsync(queueName, new ServiceBusSessionReceiverOptions()
                {
                    PrefetchCount = 100,
                    ReceiveMode = ServiceBusReceiveMode.ReceiveAndDelete
                });

                Console.WriteLine(receiver.SessionId);

                if (receiver == null)
                {
                    break;
                }
                var msg = await receiver.ReceiveMessageAsync();
                while (msg != null)
                {

                    Console.WriteLine("messageid: " + msg.MessageId.ToString());

                    //await receiver.CompleteMessageAsync(msg);
                    msg = await receiver.ReceiveMessageAsync(TimeSpan.FromSeconds(2));
                }



            }

        }
    }
}