【ASP】ASP.net(c#)生成条形码 code39条码生成方法-net--c-生成-条形码

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ASP.net(c#)生成条形码 code39条码生成方法

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;
}
}

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