public Task<int> SelectPersistentObjectCountAsync<PersistentObjectType>(
	PersistentObjectFieldFilterCollection persistentObjectFieldFilterCollection
)

Public Function SelectPersistentObjectCountAsync(Of PersistentObjectType) ( 
	persistentObjectFieldFilterCollection As PersistentObjectFieldFilterCollection
) As Task(Of Integer)

public:
generic<typename PersistentObjectType>
Task<int>^ SelectPersistentObjectCountAsync(
	PersistentObjectFieldFilterCollection^ persistentObjectFieldFilterCollection
)

member SelectPersistentObjectCountAsync : 
        persistentObjectFieldFilterCollection : PersistentObjectFieldFilterCollection -> Task<int> 

using System;
using System.Collections;
using System.Collections.Generic;

using Obujekutoru;

namespace ObujekutoruExamples.ConnectionSelectCountExample
{
  ...

    internal class AsyncSelectCountClass
    {
        public async void AsyncSelectCountMethod()
        {
            String dataFolderPath = @"C:\Temp\ObujekutoruData";
            EncryptionType encryptionType = EncryptionType.DESEncryption;
            String encryptionKey = "A proavo habui, quod publicos litterarum ludos non frequentavi, et domi bonis praeceptoribus usus...";

            using (Connection connection = new Connection(dataFolderPath, encryptionType, encryptionKey, true))
            {
                PersistentObjectE persistentObjectE1 = new PersistentObjectE("persistent object E1", 1);
                PersistentObjectE persistentObjectE2 = new PersistentObjectE("persistent object E2", 1);
                PersistentObjectE persistentObjectE3 = new PersistentObjectE("persistent object E3", 1);
                PersistentObjectE persistentObjectE4 = new PersistentObjectE("persistent object E4", 2);
                PersistentObjectE persistentObjectE5 = new PersistentObjectE("persistent object E5", 2);
                PersistentObjectE persistentObjectE6 = new PersistentObjectE("persistent object E6", 2);
                PersistentObjectE persistentObjectE7 = new PersistentObjectE("persistent object E7", 3);
                PersistentObjectE persistentObjectE8 = new PersistentObjectE("persistent object E8", 3);
                PersistentObjectE persistentObjectE9 = new PersistentObjectE("persistent object E9", 3);

                await connection.InsertPersistentObjectAsync(persistentObjectE1);
                await connection.InsertPersistentObjectAsync(persistentObjectE2);
                await connection.InsertPersistentObjectAsync(persistentObjectE3);
                await connection.InsertPersistentObjectAsync(persistentObjectE4);
                await connection.InsertPersistentObjectAsync(persistentObjectE5);
                await connection.InsertPersistentObjectAsync(persistentObjectE6);
                await connection.InsertPersistentObjectAsync(persistentObjectE7);
                await connection.InsertPersistentObjectAsync(persistentObjectE8);
                await connection.InsertPersistentObjectAsync(persistentObjectE9);

                Int32 persistentObjectCount = await connection.SelectPersistentObjectCountAsync<PersistentObjectE>(
                    PersistentObjectFieldFilterCollection.Empty().And(
                        "persistentObjectValue", PersistentObjectFieldFilterOperator.Equal, 2));

                Console.WriteLine("persistentObjectCount = {0}", persistentObjectCount);
            }
        }
    }

  ...
}