C # streams for file management

Question

I need to save the file, unfortunately, it can potentially be very large, so saving it can take several minutes. Since I need to do this from a GUI thread, I don't want to block GUI execution. I was thinking of trying a save operation in a separate thread to allow the main GUI thread to continue executing.

Is there a good (easy) way to create a new stream, save the file and destroy the stream without any unpleasant side effects ?!

I must say that I NEVER had to use streams so that I was a complete beginner! Any help would be greatly appreciated!

Answer 1

BackgroundWorker ( ) - , , . A BackgroundWorker , , .

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Answer 2

, BackGroundWorker, Threading .

Answer 3

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void SaveMyFile(object state)
{
    // SaveTheFile
}

ThreadPool.QueueUserWorkItem( SaveMyFile );

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Answer 4

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, BeginWrite/BeginRead EndWrite/EndRead, Stream.

BeginWrite , , . , BeginWrite .

EndWrite .

BeginWrite , , , (, GUI).

using System;
using System.IO;
using System.Text;

class Program
    {
        private static FileStream stream;
        static void Main(string[] args)
        {
            stream = new FileStream("foo.txt", 
                                    FileMode.Create, 
                                    FileAccess.Write);

            const string mystring = "Foobarlalala";
            ASCIIEncoding encoding = new ASCIIEncoding();
            byte[] data = encoding.GetBytes(mystring);
            Console.WriteLine("Started writing");
            stream.BeginWrite(data, 0, data.Length, callback, null);
            Console.WriteLine("Writing dispatched, sleeping 5 secs");
            System.Threading.Thread.Sleep(5000);
        }

        public static void callback(IAsyncResult ia)
        {
            stream.EndWrite(ia);
            Console.WriteLine("Finished writing");
        }
    }
}

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MSDN , , , backgroundworker ThreadPool.

Answer 5

.