开源项目barcodelib-C#条形码图像生成库
DotNetCore实战
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·
2021-07-10 14:32
介绍
该库旨在为开发人员提供一个简单的类,以便他们在需要根据数据字符串生成条形码图像时使用。
用法
该库包含一个名为BarcodeLib的类,其中包含三个构造函数:
Barcode();
Barcode(string);
Barcode(string, BarcodeLib.TYPE);
如果决定使用参数创建实例,则参数如下:字符串是要编码到条形码中的数据,而BarcodeLib.TYPE是用于编码数据的符号体系。如果在创建实例时未选择指定数据和类型,则可以稍后(但在编码之前)通过适当的属性指定它们。
BarcodeLib.Barcode b = new BarcodeLib.Barcode();
Image img = b.Encode(BarcodeLib.TYPE.UPCA, "038000356216", Color.Black, Color.White, 290, 120);
private void btnEncode_Click(object sender, EventArgs e)
{
errorProvider1.Clear();
int W = Convert.ToInt32(this.txtWidth.Text.Trim());
int H = Convert.ToInt32(this.txtHeight.Text.Trim());
b.Alignment = AlignmentPositions.CENTER;
//barcode alignment
switch (cbBarcodeAlign.SelectedItem.ToString().Trim().ToLower())
{
case "left": b.Alignment = AlignmentPositions.LEFT; break;
case "right": b.Alignment = AlignmentPositions.RIGHT; break;
default: b.Alignment = AlignmentPositions.CENTER; break;
}//switch
TYPE type = TYPE.UNSPECIFIED;
switch (cbEncodeType.SelectedItem.ToString().Trim())
{
case "UPC-A": type = TYPE.UPCA; break;
case "UPC-E": type = TYPE.UPCE; break;
case "UPC 2 Digit Ext.": type = TYPE.UPC_SUPPLEMENTAL_2DIGIT; break;
case "UPC 5 Digit Ext.": type = TYPE.UPC_SUPPLEMENTAL_5DIGIT; break;
case "EAN-13": type = TYPE.EAN13; break;
case "JAN-13": type = TYPE.JAN13; break;
case "EAN-8": type = TYPE.EAN8; break;
case "ITF-14": type = TYPE.ITF14; break;
case "Codabar": type = TYPE.Codabar; break;
case "PostNet": type = TYPE.PostNet; break;
case "Bookland/ISBN": type = TYPE.BOOKLAND; break;
case "Code 11": type = TYPE.CODE11; break;
case "Code 39": type = TYPE.CODE39; break;
case "Code 39 Extended": type = TYPE.CODE39Extended; break;
case "Code 39 Mod 43": type = TYPE.CODE39_Mod43; break;
case "Code 93": type = TYPE.CODE93; break;
case "LOGMARS": type = TYPE.LOGMARS; break;
case "MSI": type = TYPE.MSI_Mod10; break;
case "Interleaved 2 of 5": type = TYPE.Interleaved2of5; break;
case "Interleaved 2 of 5 Mod 10": type = TYPE.Interleaved2of5_Mod10; break;
case "Standard 2 of 5": type = TYPE.Standard2of5; break;
case "Standard 2 of 5 Mod 10": type = TYPE.Standard2of5_Mod10; break;
case "Code 128": type = TYPE.CODE128; break;
case "Code 128-A": type = TYPE.CODE128A; break;
case "Code 128-B": type = TYPE.CODE128B; break;
case "Code 128-C": type = TYPE.CODE128C; break;
case "Telepen": type = TYPE.TELEPEN; break;
case "FIM": type = TYPE.FIM; break;
case "Pharmacode": type = TYPE.PHARMACODE; break;
default: MessageBox.Show("Please specify the encoding type."); break;
}//switch
try
{
if (type != TYPE.UNSPECIFIED)
{
try
{
b.BarWidth = textBoxBarWidth.Text.Trim().Length < 1 ? null : (int?)Convert.ToInt32(textBoxBarWidth.Text.Trim());
}
catch (Exception ex)
{
throw new Exception("Unable to parse BarWidth: " + ex.Message, ex);
}
try
{
b.AspectRatio = textBoxAspectRatio.Text.Trim().Length < 1 ? null : (double?)Convert.ToDouble(textBoxAspectRatio.Text.Trim());
}
catch (Exception ex)
{
throw new Exception("Unable to parse AspectRatio: " + ex.Message, ex);
}
b.IncludeLabel = this.chkGenerateLabel.Checked;
b.RotateFlipType = (RotateFlipType)Enum.Parse(typeof(RotateFlipType), this.cbRotateFlip.SelectedItem.ToString(), true);
if (!String.IsNullOrEmpty(this.textBox1.Text.Trim()))
b.AlternateLabel = this.textBox1.Text;
else
b.AlternateLabel = this.txtData.Text;
//label alignment and position
switch (this.cbLabelLocation.SelectedItem.ToString().Trim().ToUpper())
{
case "BOTTOMLEFT": b.LabelPosition = LabelPositions.BOTTOMLEFT; break;
case "BOTTOMRIGHT": b.LabelPosition = LabelPositions.BOTTOMRIGHT; break;
case "TOPCENTER": b.LabelPosition = LabelPositions.TOPCENTER; break;
case "TOPLEFT": b.LabelPosition = LabelPositions.TOPLEFT; break;
case "TOPRIGHT": b.LabelPosition = LabelPositions.TOPRIGHT; break;
default: b.LabelPosition = LabelPositions.BOTTOMCENTER; break;
}//switch
//===== Encoding performed here =====
barcode.BackgroundImage = b.Encode(type, this.txtData.Text.Trim(), this.btnForeColor.BackColor, this.btnBackColor.BackColor, W, H);
//===================================
//show the encoding time
this.lblEncodingTime.Text = "(" + Math.Round(b.EncodingTime, 0, MidpointRounding.AwayFromZero).ToString() + "ms)";
txtEncoded.Text = b.EncodedValue;
tsslEncodedType.Text = "Encoding Type: " + b.EncodedType.ToString();
// Read dynamically calculated Width/Height because the user is interested.
if (b.BarWidth.HasValue)
txtWidth.Text = b.Width.ToString();
if (b.AspectRatio.HasValue)
txtHeight.Text = b.Height.ToString();
}//if
//reposition the barcode image to the middle
barcode.Location = new Point((this.barcode.Location.X + this.barcode.Width / 2) - barcode.Width / 2, (this.barcode.Location.Y + this.barcode.Height / 2) - barcode.Height / 2);
}//try
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}//catch
}//btnEncode_Click
版权和许可
Apache-2.0 License
开源地址
https://github.com/barnhill/barcodelib
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