How to set bar width using zen barcode generator

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C#4.0

I am using Zen bar code .dll , to generate bar code , but as per my label , if i am passing character length more then 10 , then complete bar code not getting print also not able to scan. So need to set barcode width , so that the lining of barcode get reduced and i can print 20 character on the same length label.

What I have tried:

Zen.Barcode.Code39BarcodeDraw barcode = Zen.Barcode.BarcodeDrawFactory.Code39WithoutChecksum;

var barcodeImage1 = barcode.Draw("Here passing character", 28);
var barcodeImage2 = barcode.Draw("Here passing character", 28);

var resultImage1 = new Bitmap(barcodeImage1.Width, barcodeImage1.Height + 20); // 20 is bottom padding, adjust to your text
var resultImage2 = new Bitmap(barcodeImage2.Width, barcodeImage2.Height + 62); // 20 is bottom padding, adjust to your text

using (var graphics1 = Graphics.FromImage(resultImage1))
using (var graphics2 = Graphics.FromImage(resultImage2))
using (var font = new Font("Consolas", 7))
using (var brush = new SolidBrush(Color.Black))
using (var format = new StringFormat()
{
Alignment = StringAlignment.Center, // Also, horizontally centered text, as in your example of the expected output
LineAlignment = StringAlignment.Far
})
{
graphics1.Clear(Color.White);
ev.Graphics.DrawImage(barcodeImage1, 10, 3);
ev.Graphics.DrawString(originalNo, font, brush, resultImage1.Width / 2, resultImage1.Height, format);

graphics2.Clear(Color.White);
ev.Graphics.DrawImage(barcodeImage2, 10,48);
ev.Graphics.DrawString(InhouseNo, font, brush, resultImage2.Width / 2, resultImage2.Height, format);

}