private void chooseFileForMatrix_Click(object sender, EventArgs e)
{
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
matrixFilename = openFileDialog.FileName;
}
else
{
return;
}
fileForMatrix.Text = filename;
FileStream readStream;
try
{
readStream = new FileStream(matrixFilename, FileMode.Open);
}
catch (IOException)
{
MessageBox.Show("Opening file error", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
pictureBox.Image = LSB.CreateMatrix(new Bitmap(readStream));
readStream.Close();
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
destFilename = saveFileDialog.FileName;
}
else
{
return;
}
FileStream writeStream;
try
{
writeStream = new FileStream(destFilename, FileMode.Create);
}
catch (IOException)
{
MessageBox.Show("Opening file error", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
pictureBox.Image.Save(writeStream, System.Drawing.Imaging.ImageFormat.Bmp);
writeStream.Close();
matrixFilename = ""; destFilename = "";
}
private void extract_Click(object sender, EventArgs e)
{
FileStream readStream;
try
{
readStream = new FileStream(filename, FileMode.Open);
}
catch (IOException)
{
MessageBox.Show("Opening file error", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
string result = LSB.ExtractText(new Bitmap(readStream));
readStream.Close();
extractedMessage.Text = result;
filename = "";
}
private void hide_Click(object sender, EventArgs e)
{
FileStream readStream;
try
{
readStream = new FileStream(srcFilename, FileMode.Open);
}
catch (IOException)
{
MessageBox.Show("Opening file error", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
Bitmap result = LSB.HideText(hiddenMessage.Text, new Bitmap(readStream));
readStream.Close();
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
destFilename = saveFileDialog.FileName;
}
else
{
return;
}
FileStream writeStream;
try
{
writeStream = new FileStream(destFilename, FileMode.Create);
}
catch (IOException)
{
MessageBox.Show("Opening file error", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
result.Save(writeStream, System.Drawing.Imaging.ImageFormat.Bmp);
writeStream.Close();
srcFilename = ""; destFilename = "";
}