/////////////////////////////////////////////////////////////////////
// create pdf417 barcode image file
/////////////////////////////////////////////////////////////////////
private void OnEncode(object sender, EventArgs e)
{
// get bar width
if (!int.TryParse(BarWidthTextBox.Text.Trim(), out int BarWidth) || BarWidth < 1 || BarWidth > 20)
{
MessageBox.Show("Narrow bar width must be 1 to 20 pixels");
return;
}
// get row height
if (!int.TryParse(RowHeightTextBox.Text.Trim(), out int RowHeight) || RowHeight < 3 * BarWidth || RowHeight > 60)
{
MessageBox.Show("Row height must be 3 times bar width or more in pixels");
return;
}
// get quiet zone
if (!int.TryParse(QuietZoneTextBox.Text.Trim(), out int QuietZone) || QuietZone < 2 * BarWidth || RowHeight > 40)
{
MessageBox.Show("Quiet zone must be 2 times bar width or more in pixels");
return;
}
// get default data columns
if (!int.TryParse(DefDataColTextBox.Text.Trim(), out int DefDataColumns) || DefDataColumns < 1 || DefDataColumns > 30)
{
MessageBox.Show("Number of data columns must be 1 to 30");
return;
}
// disable buttons
EnableButtons(false);
// clear current image
Pdf417Bitmap = null;
// trap encoding errors
try
{
// encoding request
Encoder.EncodingControl = (EncodingControl)EncodingComboBox.SelectedIndex;
// error correction request
Encoder.ErrorCorrection = (ErrorCorrectionLevel)ErrorCorrectionComboBox.SelectedIndex;
// language or character set
int Part = CharacterSetComboBox.SelectedIndex;
if (Part == 10)
{
Part = 15;
}
else if (Part == 9)
{
Part = 13;
}
else
{
Part++;
}
Encoder.GlobalLabelIDCharacterSet = string.Format("ISO-8859-{0}", Part);
// narrow bar width
Encoder.NarrowBarWidth = BarWidth;
// row height
Encoder.RowHeight = RowHeight;
// quiet zone
Encoder.QuietZone = QuietZone;
// default data columns
Encoder.DefaultDataColumns = DefDataColumns;
// load barcode data
Encoder.Encode(DataTextBox.Text);
// create bitmap image
Pdf417Bitmap = Encoder.CreateBarcodeBitmap();
// update screen labels
WidthHeightLabel.Text = ((double)Encoder.ImageWidth / Encoder.ImageHeight).ToString("0.0");
DataRowsLabel.Text = Encoder.DataRows.ToString();
DataColumnsLabel.Text = Encoder.DataColumns.ToString();
#if DEBUG
string ArgLine = string.Format("-Col:{0} -Error:{1} -Width:{2} -Height:{3} -Quiet:{4} -t \"{5}\" \"{6}\"",
10, 7, 6, 20, 15, "TestFile.txt", "Test Image.png");
Pdf417CommandLine.Encode(ArgLine);
#endif
}
catch (Exception Ex)
{
MessageBox.Show("Encoding exception.\r\n" + Ex.Message);
}
// enable buttons
EnableButtons(true);
// repaint panel
Invalidate();
return;
}
