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Monday, January 21, 2013

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

}


 

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