MemoryMappedFile 送信側

Form1.cs

    public partial class Form1 : Form
    {
        private MemoryMappedFile mmf;

        public Form1()
        {
            InitializeComponent();
            try
            {
                mmf = MemoryMappedFile.CreateNew("Test", 1024);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
                this.Close();
            }
        }
        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                using (var stream = mmf.CreateViewStream())
                using (StreamWriter sw = new StreamWriter(stream))
                {
                    DateTime dt = DateTime.Now;
                    sw.Write(dt.ToString());
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            mmf.Dispose();
        }
    }