Generating BarCode Using C-Sharp

Following are the methods to generate the barcode using C-Sharp...

private void btn_GenerateBarCode_Click(object sender, EventArgs e)

{

     GenerateBarCode();

}

private void GenerateBarCode()

{

    int barSize = System.Convert.ToInt32(39);

System.Byte[] imgBarcode = Code39("*" + txtBarCodeText.Text + "*", barSize, false, "");

    MemoryStream memStream = new MemoryStream(imgBarcode);

    PictureBox_BarCodeResult.Image = new Bitmap(memStream);

    //statbar.Panels[0].Text = "Done.";

    this.Cursor = Cursors.Default;

}

// This Method is used in above method

public byte[] Code39(string code, int barSize, bool showCodeString, string title)

{

    MyBarCodeClass c39 = new MyBarCodeClass();

    string appPath = Path.GetDirectoryName(Application.ExecutablePath);

    // Create stream....

    MemoryStream ms = new MemoryStream();

    c39.FontFamilyName = "Free 3 of 9";

    c39.FontFileName = appPath + "\\FREE3OF9.TTF";

    c39.FontSize = barSize;

    c39.ShowCodeString = showCodeString;

    if (title + "" != "")

        c39.Title = title;

    Bitmap objBitmap = c39.GenerateBarcode(code);

    objBitmap.Save(ms, ImageFormat.Png);

    //return bytes....

    return ms.GetBuffer();

}

 
Bellow is the Class used in above Method

public class MyBarCodeClass

{

private const int _itemSepHeight = 3;

SizeF _titleSize = SizeF.Empty;

SizeF _barCodeSize = SizeF.Empty;

SizeF _codeStringSize = SizeF.Empty;

#region Barcode Title

private string _titleString = null;

private Font _titleFont = null;

public string Title

{

    get { return _titleString; }

    set { _titleString = value; }

}

public Font TitleFont

{

    get { return _titleFont; }

    set { _titleFont = value; }

}

#endregion

#region Barcode code string

private bool _showCodeString = false;

private Font _codeStringFont = null;

public bool ShowCodeString

{

    get { return _showCodeString; }

    set { _showCodeString = value; }

}

public Font CodeStringFont

{

    get { return _codeStringFont; }

    set { _codeStringFont = value; }

}

#endregion

#region Barcode Font

private Font _c39Font = null;

private float _c39FontSize = 12;

private string _c39FontFileName = null;

private string _c39FontFamilyName = null;

public string FontFileName

{

    get { return _c39FontFileName; }

    set { _c39FontFileName = value; }

}

public string FontFamilyName

{

    get { return _c39FontFamilyName; }

    set { _c39FontFamilyName = value; }

}

public float FontSize

{

    get { return _c39FontSize; }

    set { _c39FontSize = value; }

}

private Font Code39Font

{

    get

    {

        if (_c39Font == null)

        {

            // Load the barcode font                 

            PrivateFontCollection pfc = new PrivateFontCollection();

            pfc.AddFontFile(_c39FontFileName);

            FontFamily family = new FontFamily(_c39FontFamilyName, pfc);

            _c39Font = new Font(family, _c39FontSize);

        }

        return _c39Font;

    }

}

#endregion

public MyBarCodeClass()

{

    _titleFont = new Font("Arial", 10);

    _codeStringFont = new Font("Arial", 10);

}

#region Barcode Generation

public Bitmap GenerateBarcode(string barCode)

{

    int bcodeWidth = 0;

    int bcodeHeight = 0;

    // Get the image container...

    Bitmap bcodeBitmap = CreateImageContainer(barCode, ref bcodeWidth, ref bcodeHeight);

    Graphics objGraphics = Graphics.FromImage(bcodeBitmap);

    // Fill the background               

    objGraphics.FillRectangle(new SolidBrush(Color.White), new Rectangle(0, 0, bcodeWidth, bcodeHeight));

    int vpos = 0;

    // Draw the title string

    if (_titleString != null)

    {

        objGraphics.DrawString(_titleString, _titleFont, new SolidBrush(Color.Black), XCentered((int)_titleSize.Width, bcodeWidth), vpos);

        vpos += (((int)_titleSize.Height) + _itemSepHeight);

    }

    // Draw the barcode

    objGraphics.DrawString(barCode, Code39Font, new SolidBrush(Color.Black), XCentered((int)_barCodeSize.Width, bcodeWidth), vpos);

    // Draw the barcode string

    if (_showCodeString)

    {

        vpos += (((int)_barCodeSize.Height));

        objGraphics.DrawString(barCode, _codeStringFont, new SolidBrush(Color.Black), XCentered((int)_codeStringSize.Width, bcodeWidth), vpos);

    }

    // return the image...                                                   

    return bcodeBitmap;

}

private Bitmap CreateImageContainer(string barCode, ref int bcodeWidth, ref int bcodeHeight)

{

    Graphics objGraphics;

    // Create a temporary bitmap...

    Bitmap tmpBitmap = new Bitmap(1, 1, PixelFormat.Format32bppArgb);

    objGraphics = Graphics.FromImage(tmpBitmap);

    // calculate size of the barcode items...

    if (_titleString != null)

    {

        _titleSize = objGraphics.MeasureString(_titleString, _titleFont);

        bcodeWidth = (int)_titleSize.Width;

        bcodeHeight = (int)_titleSize.Height + _itemSepHeight;

    }

    _barCodeSize = objGraphics.MeasureString(barCode, Code39Font);

    bcodeWidth = Max(bcodeWidth, (int)_barCodeSize.Width);

    bcodeHeight += (int)_barCodeSize.Height;

    if (_showCodeString)

    {

        _codeStringSize = objGraphics.MeasureString(barCode, _codeStringFont);

        bcodeWidth = Max(bcodeWidth, (int)_codeStringSize.Width);

        bcodeHeight += (_itemSepHeight + (int)_codeStringSize.Height);

    }

    // dispose temporary objects...

    objGraphics.Dispose();

    tmpBitmap.Dispose();

    return (new Bitmap(bcodeWidth, bcodeHeight, PixelFormat.Format32bppArgb));

}

#endregion

#region Auxiliary Methods

private int Max(int v1, int v2)

{

    return (v1 > v2 ? v1 : v2);

}

private int XCentered(int localWidth, int globalWidth)

{

    return ((globalWidth - localWidth) / 2);

}

#endregion

}