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C#生成条形码

C#利用Zxing.net生成条形码和二维码并实现打印的功能

    开篇:zxing.net是.net平台下编解条形码和二维码的工具。

         下载地址:http://pan.baidu.com/s/1i3BXPLN

Step1:使用VS2010新建一个窗体程序项目:

Step2:添加三个类:分别是BarCodeClass.cs、DocementBase.cs、imageDocument.cs。(下一步贴出这些类的代码);;;;添加下载回来的引用zxing.dll。

》说明:

《1》   BarCodeClass.cs主要用来实现条形码和二维码的生成和解析。

《2》   DocementBase.cs、imageDocument.cs这两个类是用来实现对生成的条形码和二维码进行打印。

Step3:编写上一步的三个类的代码:

》BarCodeClass.cs

    using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using ZXing.Common;

using ZXing;

using System.Windows.Forms;

using System.Drawing;

using System.Text.RegularExpressions;

using ZXing.QrCode;

namespace BarCode

{

    class BarCodeClass

    {

        ///<summary>

        ///生成条形码

        ///</summary>

        ///<paramname="pictureBox1"></param>

        ///<paramname="Contents"></param>

        public void CreateBarCode(PictureBoxpictureBox1,string Contents)

        {

            Regexrg = new Regex("^[0-9]{12}$");

            if(!rg.IsMatch(Contents))

             {

                 MessageBox.Show("本例子采用EAN_13编码,需要输入12位数字");

                 return;

             }

 

            EncodingOptionsoptions =null;

            BarcodeWriterwriter =null;

            options = newEncodingOptions

            {

                Width = pictureBox1.Width,

                Height = pictureBox1.Height

            };

            writer = newBarcodeWriter();

            writer.Format = BarcodeFormat.ITF;

            writer.Options = options;

 

            Bitmapbitmap = writer.Write(Contents);

            pictureBox1.Image = bitmap; 

        }

 

        ///<summary>

        ///生成二维码

        ///</summary>

        ///<paramname="pictureBox1"></param>

        ///<paramname="Contents"></param>

        public void CreateQuickMark(PictureBoxpictureBox1,string Contents)

        {

            if(Contents == string.Empty)

            {

                MessageBox.Show("输入内容不能为空!");

                return;

            }

 

            EncodingOptionsoptions =null;

            BarcodeWriterwriter =null;

 

            options = newQrCodeEncodingOptions

           {

               DisableECI = true,

               CharacterSet = "UTF-8",

               Width = pictureBox1.Width,

               Height = pictureBox1.Height

           };

            writer = newBarcodeWriter();

            writer.Format = BarcodeFormat.QR_CODE;

            writer.Options = options;

 

        

            Bitmapbitmap = writer.Write(Contents);

            pictureBox1.Image = bitmap;

        }

 

        ///<summary>

        ///解码

        ///</summary>

        ///<paramname="pictureBox1"></param>

        public void Decode(PictureBoxpictureBox1)

        {

            BarcodeReaderreader =new BarcodeReader();

            Resultresult = reader.Decode((Bitmap)pictureBox1.Image);

        }

    }

}

 

》DocementBase.cs

    using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Drawing.Printing;

using System.Drawing;

using System.Windows.Forms;

 

namespace BarCode

{

    class DocementBase : PrintDocument

    {

        //fields

        public Font Font = new Font("Verdana",10, GraphicsUnit.Point);

 

        //预览打印

        public DialogResult showPrintPreviewDialog()

        {

            PrintPreviewDialogdialog =new PrintPreviewDialog();

            dialog.Document = this;

 

            returndialog.ShowDialog();

        }

 

        //先设置后打印

        public DialogResult ShowPageSettingsDialog()

        {

            PageSetupDialogdialog =new PageSetupDialog();

            dialog.Document = this;

 

            returndialog.ShowDialog();

        }

    }

}

 

》imageDocument.cs

    using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Drawing;

using System.Drawing.Printing;

 

namespace BarCode

{

    class imageDocument : DocementBase

    {

        privateImage _Image;

 

        public Image Image

        {

            get

            {

                return_Image;

            }

            set

            {

                _Image = value;

 

                if(_Image != null)

                {

                    if(_Image.Size.Width > _Image.Size.Height)

                       DefaultPageSettings.Landscape = true;

                    else

                       DefaultPageSettings.Landscape = false;

                }

            }

        }

 

        publicimageDocument()

        {

 

        }

 

        publicimageDocument(Image image)

        {

            this.Image= image;

        }

 

        protectedoverridevoidOnPrintPage(PrintPageEventArgs e)

        {

            if(Image == null)

            {

                thrownewInvalidOperationException();

            }

 

            RectanglebestFit = GetBestFitRectangle(e.MarginBounds, Image.Size);

         

            e.Graphics.DrawImage(Image, bestFit);

 

            e.Graphics.DrawRectangle(Pens.Black, bestFit);

            e.Graphics.DrawRectangle(Pens.Black, e.MarginBounds);

        }

 

       // 保持高度比:参数为(打印边界的Rectangularle对象,图像大小的Size对象)

        protectedRectangle GetBestFitRectangle(Rectangle toContain,SizeobjectSize)

        {

            //检查页面是水平还是竖直的。

            boolcontainerLandscape =false;

            if(toContain.Width > toContain.Height)

                containerLandscape = true;

 

            //高度比=图像的高/图像的宽

            floataspectRatio = (float)objectSize.Height / (float)objectSize.Width;

            //得到页面左上角的坐标

            intmidContainerX = toContain.Left + (toContain.Width / 2);

            intmidContainerY = toContain.Top + (toContain.Height / 2);

 

            intx1 = 0, x2 = 0, y1 = 0, y2 = 0;

            if(containerLandscape ==false)

            {

                //竖直图像

                x1 = toContain.Left;

                x2 = toContain.Right;

                //调整之后的height

                intadjustedHeight = (int)((float)toContain.Width * aspectRatio);

 

                y1 = midContainerY -(adjustedHeight / 2);

                y2 = y1 + adjustedHeight;

            }

            else

            {

                y1 = toContain.Top;

                y2 = toContain.Bottom;

                //调整之后的height

                intadjustedWidth = (int)((float)toContain.Height/ aspectRatio);

 

                x1 = midContainerX -(adjustedWidth / 2);

                x2 = x1 + adjustedWidth;

            }

            returnnewRectangle(x1,y1, x2 - x1, y2 - y1);

        }

    }

}

 

Step4:修改界面。

Step5:依次双击【生成条形码】、【生成二维码】、【解码】、【打印】等按钮,进入Click事件,编写后台代码。这里不再一一讲述如何实现。代码参照下一步:


Step6:贴出窗体的全部代码。

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Text.RegularExpressions;

using ZXing;

using ZXing.QrCode.Internal;

using ZXing.Common;

using System.IO;

using ZXing.QrCode;

 

namespace BarCode

{

    public partial class Main : Form

    {

        publicMain()

        {

            InitializeComponent(); 

        }

 

       private BarCodeClass bcc = newBarCodeClass();

       private DocementBase _docement;

 

        //生成条形码

        privatevoid button1_Click(objectsender,EventArgs e)

        {

 

            bcc.CreateBarCode(pictureBox1,txtMsg.Text);

          

        }

        //生成二维码

        privatevoid button2_Click(objectsender,EventArgs e)

        {

            bcc.CreateQuickMark(pictureBox1, txtMsg.Text);

        }

 

        privatevoid Form1_Load(objectsender,EventArgs e)

        {

            txtMsg.Text = System.DateTime.Now.ToString("yyyyMMddhhmmss").Substring(0,12);

        }

        //解码

        privatevoid button4_Click(objectsender,EventArgs e)

        {

            if(pictureBox1.Image ==null)

            {

                MessageBox.Show("请录入图像后再进行解码!");

                return;

            }

            BarcodeReaderreader =new BarcodeReader(); 

            Resultresult = reader.Decode((Bitmap)pictureBox1.Image);

            MessageBox.Show(result.Text);

        }

 

        //打印

        privatevoid button3_Click(objectsender,EventArgs e)

        {

          

            if(pictureBox1.Image ==null)

            {

                MessageBox.Show("You Must Load an Image first!");

                return;

            }

            else

            {

                _docement=new imageDocument(pictureBox1.Image);

            }

          _docement.showPrintPreviewDialog();

        }

    }

 

}

 

Step7:剩下的就是演示了:本机演示结果如下:

》运行程序:点击【生成条形码】,结果如下:

》点击【解码】按钮,结果如下:

》点击《打印》按钮,结果如下:

》点击【生成二维码】按钮,结果如下:

》点击【解码】按钮,结果如下:


》点击【打印】按钮,结果如下:

 

总结:若有不足,请各位提出批评。

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C#生成条形码