开源项目barcodelib-C＃条形码图像生成库

缺乏、安全感 2022-08-28 04:41 172阅读 0赞

## 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

![图片][254cbddfd247437926d5f45cf016e858.png]

[254cbddfd247437926d5f45cf016e858.png]: /images/20220828/58147f3c5a9d4eb0a1dc8179609e4902.png