Trabalhar com thread no C# utilizando o TaskFactory

Adeilson — Tue, 05 Apr 2016 12:08:30 +0000

using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            //var buffer1 = new BlockingCollection(10); //Qtd maxima de 10 na pilha
            //var buffer2 = new BlockingCollection(10);
            var buffer1 = new BlockingCollection(); //Sem qtd maxima na pilha
            var buffer2 = new BlockingCollection();

            var f = new TaskFactory(TaskCreationOptions.LongRunning,
                                    TaskContinuationOptions.None);

            //List t = new List();
            //t.Add(f.StartNew(() => CreateInitialRange(buffer1)));

            Task[] tasks = new Task[3];

            //Start the phases of the pipeline
            //Task stage1 = f.StartNew(() => CreateInitialRange(buffer1));
            //Task stage2 = f.StartNew(() => DoubleTheRange(buffer1, buffer2));
            //Task stage3 = f.StartNew(() => WriteResults(buffer2));

            tasks[0] = f.StartNew(() => CreateInitialRange(buffer1));
            tasks[1] = f.StartNew(() => DoubleTheRange(buffer1, buffer2));
            tasks[2] = f.StartNew(() => WriteResults(buffer2));

            //wait for the phases to complete
            //Task.WaitAll(stage1, stage2, stage3);
            Task.WaitAll(tasks);

            Console.WriteLine("Pressione uma tecla...");
            Console.ReadLine();
        }



        static void CreateInitialRange(BlockingCollection output)
        {
            try
            {
                for (int i = 1; i <= 50; i++)
                {
                    Console.WriteLine("Inicio {0}, qtd {1}", i, output.Count());

                    //Console.WriteLine("CreateInitialRange {0}", i);
                    Thread.Sleep(200);
                    output.Add(i);
                }
            }
            finally
            {
                output.CompleteAdding();
            }
        }


        static void DoubleTheRange(BlockingCollection input, BlockingCollection output)
        {
            try
            {
                foreach (var number in input.GetConsumingEnumerable())
                {
                    Console.WriteLine("Meio {0}, qtd input {1}, qtd output {2}", number * number, input.Count(), output.Count());
                    Thread.Sleep(400);
                    output.Add(number * number);
                }
            }
            finally
            {
                output.CompleteAdding();
            }
        }


        static void WriteResults(BlockingCollection input)
        {
            foreach (var squaredNumber in input.GetConsumingEnumerable())
            {
                //Console.WriteLine("Result is {0}", squaredNumber);
                Console.WriteLine("Fim {0}, qtd {1}", squaredNumber, input.Count());
                Thread.Sleep(800);
            }
        }

    }
}

Fonte: Link

Quebrar arquivo grande em C# (Console)

Adeilson — Wed, 02 Dec 2015 15:31:36 +0000

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace split
{
    class Program
    {
        static void Main(string[] args)
        {
            if (args.Length == 2)
            {
                string arquivo = args[0];
                string destino = args[1];
                int qtd = 0;

                StreamWriter writer = null;
                try
                {
                    using (StreamReader inputfile = new System.IO.StreamReader(arquivo))
                    {
                        int count = 0;
                        string line;
                        while ((line = inputfile.ReadLine()) != null)
                        {

                            //800.000 linhas
                            if (writer == null || count >= 800000)
                            {
                                count = 0;
                                if (writer != null)
                                {
                                    writer.Close();
                                    writer = null;
                                }

                                writer = new System.IO.StreamWriter(Path.GetDirectoryName(arquivo) + "\\" + Path.GetFileNameWithoutExtension(arquivo) + "_" + qtd.ToString() + ".txt", true);
                                qtd++;
                            }

                            writer.WriteLine(line.ToLower());

                            ++count;
                        }
                    }
                }
                finally
                {
                    if (writer != null)
                        writer.Close();
                    Console.WriteLine("Split concluido.");
                }
            }
            else
            {
                Console.WriteLine("Split diretorio_e_arquivo diretorio_destino");
            }

            Console.WriteLine("Pressione uma tecla para continuar . . .");
            Console.ReadKey();
        }
    }
}

Arquivos c# - Adeilson :)

Trabalhar com thread no C# utilizando o TaskFactory

Quebrar arquivo grande em C# (Console)