.NET (Core and Framework)

String *fileName1 = S"Old.Dat";<br />
String *fileName2 = S"New.Dat";<br />
FileStream *fsOld = new FileStream(fileName1, FileMode::Open);<br />
FileStream *fsNew = new FileStream(fileName2, FileMode::Create);<br />
<br />
BinaryReader *br = new BinaryReader(fsOld);<br />
BinaryWriter *bw = new BinaryWriter(fsNew);<br />
	do <br />
	{<br />
		if (br->BaseStream->Length == br->BaseStream->Position)<br />
			break;<br />
<br />
		Byte q[] = br->ReadBytes(10);<br />
		bw->Write(q);<br />
				 	<br />
	} while(true);<br />
br->Close();<br />
bw->Close();

StreamReader ^sr = gcnew StreamReader(File::OpenRead("test.txt"), Encoding::Default);

SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
SetStyle(ControlStyles.DoubleBuffer, true);

Bitmap resizedBitmap = new Bitmap(wantedWidth, wantedHeight);
Graphics g = Graphics.FromImage(resizedBitmap);
g.DrawImageUnscaled(oldBitmap, 0, 0, wantedWidth, wantedHeight);
g.Dispose();
//resizedBimtap is ready to use

public class Form1 : System.Windows.Forms.Form
{
	private Point _curPos = new Point(0, 0);
	private Image _image;

	public Form1()
	{
		base.KeyPress += new KeyPressEventHandler(Form1_KeyPress);
		SetStyle(ControlStyles.UserPaint, true);
		SetStyle(ControlStyles.AllPaintingInWmPaint, true);
		SetStyle(ControlStyles.DoubleBuffer, true);
		_image = new Bitmap("C:\\test2.jpg");
	}

	private void Form1_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
	{
		switch (e.KeyChar)
		{
			case 'w': _curPos.Y -= 5; break;
			case 's': _curPos.Y += 5; break;
			case 'a': _curPos.X -= 5; break;
			case 'd': _curPos.X += 5; break;
		}
		Invalidate();
	}

	protected override void OnPaint(PaintEventArgs e)
	{
		base.OnPaint (e);
		e.Graphics.DrawImageUnscaled(_image, _curPos);
	}
}