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//using System.IO;
private void button1_Click(object sender, EventArgs e)
{
switch (openFileDialog1.ShowDialog())
{
case DialogResult.Yes:
case DialogResult.OK:
break;
default:
return;
}
FileStream fileStream = new FileStream(openFileDialog1.FileName,
FileMode.Open, FileAccess.Read);
byte[] buffer = new byte[fileStream.Length];
fileStream.Read(buffer, 0, buffer.Length);
StringBuilder result = new StringBuilder(0x1000);
fileStream.Close();
for (int i = 0; i < buffer.Length; i++)
{
result.Append(Convert.ToString(buffer[i] + 0x100, 2).Substring(1, 8));
result.Append(" ");
}
richTextBox1.Text = result.ToString();
}