摘要：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。
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。
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);privatevoid 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 alignmentswitch (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; }//switchtry {if (type != TYPE.UNSPECIFIED) {try { b.BarWidth = textBoxBarWidth.Text.Trim.Length }catch (Exception ex) {thrownew Exception("Unable to parse BarWidth: " + ex.Message, ex); }try { b.AspectRatio = textBoxAspectRatio.Text.Trim.Length }catch (Exception ex) {thrownew 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.IsOrEmpty(this.textBox1.Text.Trim)) b.AlternateLabel = this.textBox1.Text;else b.AlternateLabel = this.txtData.Text;//label alignment and positionswitch (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 timethis.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); }//trycatch (Exception ex) { MessageBox.Show(ex.Message); }//catch }//btnEncode_Click来源：opendotnet
