1.先下载一种免费的 code39条码字体 2.建个类 为 code39 并写入以下代码 复制代码 代码如下: public sealed class Code39 { #region private variables /// <summary> /// The Space Between each of Title, BarCode, BarCodeString /// </summary> private const int SPACE_HEIGHT = 3; SizeF _sizeLabel = SizeF.Empty; SizeF _sizeBarCodeValue = SizeF.Empty; SizeF _sizeBarCodeString = SizeF.Empty; #endregion #region Label private string _label = null; private Font _labelFont = null; /// <summary> /// BarCode Title (条码标签) /// </summary> public string Label { set { _label = value; } } /// <summary> /// BarCode Title Font (条码标签使用的字体) /// </summary> public Font LabelFont { get { if (_labelFont == null) return new Font("Arial", 10); return _labelFont; } set { _labelFont = value; } } #endregion private string _additionalInfo = null; private Font _addtionalInfoFont = null; /// <summary> /// Additional Info Font (附加信息字体) /// </summary> public Font AdditionalInfoFont { set { _addtionalInfoFont = value; } get { if (_addtionalInfoFont == null) return new Font("Arial", 10); return _addtionalInfoFont; } } /// <summary> /// Additional Info Content, if "ShowBarCodeValue" is true, the info is unvisible /// 附加信息，如果设置ShowBarCodeValue为true,则此项不显示 /// </summary> public string AdditionalInfo { set { _additionalInfo = value; } } #region BarCode Value and Font private string _barCodeValue = null; /// <summary> /// BarCode Value (条码值) /// </summary> public string BarCodeValue { get { if (string.IsNullOrEmpty(_barCodeValue)) throw new NullReferenceException("The BarCodeValue has not been set yet!"); return _barCodeValue; } set { _barCodeValue = value.StartsWith("*") && value.EndsWith("*") ? value : "*" + value + "*"; } } private bool _showBarCodeValue = false; /// <summary> /// whether to show the original string of barcode value bellow the barcode /// 是否在条码下方显示条码值，默认为false /// </summary> public bool ShowBarCodeValue { set { _showBarCodeValue = value; } } private Font _barCodeValueFont = null; /// <summary> /// the font of the codestring to show /// 条码下方显示的条码值的字体 /// </summary> public Font BarCodeValueFont { get { if (_barCodeValueFont == null) return new Font("Arial", 10); return _barCodeValueFont; } set { _barCodeValueFont = value; } } private int _barCodeFontSize = 50; /// <summary> /// the font size of the barcode value to draw /// 条码绘制的大小，默认50 /// </summary> public int BarCodeFontSzie { set { _barCodeFontSize = value; } } #endregion #region generate the barcode image private Bitmap BlankBackImage { get { int barCodeWidth = 0, barCodeHeight = 0; using (Bitmap bmp = new Bitmap(1, 1, PixelFormat.Format32bppArgb)) { using (Graphics g = Graphics.FromImage(bmp)) { if (!string.IsNullOrEmpty(_label)) { _sizeLabel = g.MeasureString(_label, LabelFont); barCodeWidth = (int)_sizeLabel.Width; barCodeHeight = (int)_sizeLabel.Height + SPACE_HEIGHT; } _sizeBarCodeValue = g.MeasureString(BarCodeValue, new Font("Free 3 of 9 Extended", _barCodeFontSize)); barCodeWidth = Math.Max(barCodeWidth, (int)_sizeBarCodeValue.Width); barCodeHeight += (int)_sizeBarCodeValue.Height; if (_showBarCodeValue) { _sizeBarCodeString = g.MeasureString(_barCodeValue, BarCodeValueFont); barCodeWidth = Math.Max(barCodeWidth, (int)_sizeBarCodeString.Width); barCodeHeight += (int)_sizeBarCodeString.Height + SPACE_HEIGHT; } //else //{ // if (!string.IsNullOrEmpty(_additionalInfo)) // { // _sizeAdditionalInfo = g.MeasureString(_additionalInfo, AdditionalInfoFont); // barCodeWidth = Math.Max(barCodeWidth, (int)_sizeAdditionalInfo.Width); // barCodeHeight += (int)_sizeAdditionalInfo.Height + SPACE_HEIGHT; // } //} } } return new Bitmap(barCodeWidth, barCodeHeight, PixelFormat.Format32bppArgb); } } /// <summary> /// Draw the barcode value to the blank back image and output it to the browser /// 绘制WebForm形式的条码 /// </summary> /// <param name="ms">Recommand the "Response.OutputStream" 使用 Response.OutputStream</param> /// <param name="imageFormat">The Image format to the Browser 输出到浏览器到图片格式，建议GIF</param> public Bitmap CreateWebForm(Stream ms, ImageFormat imageFormat) { int barCodeWidth, barCodeHeight; using (Bitmap bmp = this.BlankBackImage) { barCodeHeight = bmp.Height; barCodeWidth = bmp.Width; using (Graphics g = Graphics.FromImage(bmp)) { g.Clear(Color.White); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit; g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; int vPos = 0; ////Draw Label String if (!string.IsNullOrEmpty(_label)) { g.DrawString(_label, LabelFont, new SolidBrush(Color.Black), XCenter((int)_sizeLabel.Width, barCodeWidth), vPos); vPos += (int)_sizeLabel.Height + SPACE_HEIGHT; } else { vPos = SPACE_HEIGHT; } ////Draw The Bar Value g.DrawString(_barCodeValue, new Font("Free 3 of 9 Extended", _barCodeFontSize), new SolidBrush(Color.Black), XCenter((int)_sizeBarCodeValue.Width, barCodeWidth), vPos); ////Draw the BarValue String if (_showBarCodeValue) { g.DrawString(_barCodeValue, BarCodeValueFont, new SolidBrush(Color.Black), XCenter((int)_sizeBarCodeString.Width, barCodeWidth), vPos + (int)_sizeBarCodeValue.Height); } //else //{ // if (!string.IsNullOrEmpty(_additionalInfo)) // { // g.DrawString(_additionalInfo, AdditionalInfoFont, new SolidBrush(Color.Black), // XCenter((int)_sizeAdditionalInfo.Width, barCodeWidth), // vPos + (int)_sizeBarCodeValue.Height); // } //} } bmp.Save(ms, imageFormat); return bmp; } } /// <summary> /// 生成winform格式的条码 /// </summary> /// <param name="imageFormat">图片格式，建议GIF</param> /// <returns>Stream类型</returns> public Stream CreateWinForm(ImageFormat imageFormat) { int barCodeWidth, barCodeHeight; using (Bitmap bmp = this.BlankBackImage) { barCodeHeight = bmp.Height; barCodeWidth = bmp.Width; using (Graphics g = Graphics.FromImage(bmp)) { g.Clear(Color.White); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit; g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; int vPos = 0; ////Draw Label String if (!string.IsNullOrEmpty(_label)) { g.DrawString(_label, LabelFont, new SolidBrush(Color.Black), XCenter((int)_sizeLabel.Width, barCodeWidth), vPos); vPos += (int)_sizeLabel.Height + SPACE_HEIGHT; } else { vPos = SPACE_HEIGHT; } ////Draw The Bar Value g.DrawString(_barCodeValue, new Font("Free 3 of 9 Extended", _barCodeFontSize), new SolidBrush(Color.Black), XCenter((int)_sizeBarCodeValue.Width, barCodeWidth), vPos); ////Draw the BarValue String if (_showBarCodeValue) { g.DrawString(_barCodeValue, BarCodeValueFont, new SolidBrush(Color.Black), XCenter((int)_sizeBarCodeString.Width, barCodeWidth), vPos + (int)_sizeBarCodeValue.Height); } //else //{ // //if (!string.IsNullOrEmpty(_additionalInfo)) // //{ // // g.DrawString(_additionalInfo, AdditionalInfoFont, new SolidBrush(Color.Black), // // //XCenter((int)_sizeAdditionalInfo.Width, barCodeWidth), // // vPos + (int)_sizeBarCodeValue.Height); // //} //} } Stream ms = new MemoryStream(); bmp.Save(ms, imageFormat); return ms; } } #endregion private static int XCenter(int subWidth, int globalWidth) { return (globalWidth - subWidth) / 2; } }
3.如果是web程序 请调用 CreateWebForm 如果是cs程序 则使用CreateWinForm 4.新建一aspx文件，写入以下代码 复制代码 代码如下: protected void Page_Load(object sender, EventArgs e) { Code39 code39 = new Code39(); code39.BarCodeValue = "LDSO-001"; code39.BarCodeFontSzie = 60; // code39.Label = "39码，底部显示码值"; code39.ShowBarCodeValue = true; Response.Write(code39.CreateWebForm(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Gif)); code39 = null; }