namespace Homework

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

string pathSource = string.Empty;

string pathMB = string.Empty;

private void btnOpenPath_Click(object sender, EventArgs e)

{

OpenFileDialog ofd = new OpenFileDialog();

ofd.Multiselect = false;

ofd.ShowDialog();

pathSource = ofd.FileName;

txtSourcePath.Text = pathSource;

}

private void btnXz_Click(object sender, EventArgs e)

{

if (!string.IsNullOrEmpty(pathSource))

{

SaveFileDialog sfd = new SaveFileDialog();

sfd.CheckPathExists = true;

sfd.FileName = Path.GetFileNameWithoutExtension(pathSource);

sfd.DefaultExt = Path.GetExtension(pathSource);

sfd.ShowDialog();

pathMB = sfd.FileName;

txtTargetPath.Text = pathMB;

}

}

private void button1_Click(object sender, EventArgs e)

{

if (File.Exists(pathSource))

{

CopyTo();

// CopyTo(pathSource, pathMB);

}

}

private void CopyTo()

{

using (FileStream fsRead = new FileStream(pathSource, FileMode.Open))

{

using (FileStream fsWrite = new FileStream(pathMB, FileMode.Create))

{

while (true)

{

byte[] bytes = new byte[1024 * 50 * 1024];

int count = fsRead.Read(bytes, 0, bytes.Length);

fsWrite.Write(bytes, 0, count);

if (count <= 0)

{

MessageBox.Show("OK");

break;

}

}

}

}

}

}

}