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C#标签批量打印程序开发

news 2025/8/16 13:22:03

C#标签批量打印程序开发（集成Bartender解决方案）

一、系统架构设计

1. 核心模块划分

public class LabelPrintingSystem {private IDataLoader _dataLoader;    // 数据加载器private ITemplateEngine _templateEngine; // 模板引擎private IPrintController _printController; // 打印控制器private ILogger _logger;            // 日志系统
}

2. 技术选型建议

模板引擎：Bartender（推荐）或 SoftCode
数据接口：ADO.NET（数据库）/ EPPlus（Excel）
打印控制：BarTender COM组件或 SDK
界面框架：WinForm/WPF

二、关键实现步骤

1. 数据准备与加载

// 数据库数据加载示例
public class DatabaseLoader : IDataLoader {public List<LabelData> Load(string connectionString) {using (var conn = new SqlConnection(connectionString)) {var cmd = new SqlCommand("SELECT * FROM Labels", conn);conn.Open();return cmd.ExecuteReader().ConvertToList<LabelData>();}}
}// Excel数据加载示例
public class ExcelLoader : IDataLoader {public List<LabelData> Load(string filePath) {using (var package = new ExcelPackage(new FileInfo(filePath))) {return package.Workbook.Worksheets[0].ConvertToList<LabelData>();}}
}

2. Bartender模板集成

// 模板引擎初始化
var templateEngine = new BartenderTemplateEngine();
templateEngine.LoadTemplate("LabelTemplate.btw");// 数据绑定
templateEngine.BindData("ProductCode", item.Code);
templateEngine.BindData("Barcode", item.Barcode);
templateEngine.BindData("BatchNo", item.Batch);

3. 批量打印核心逻辑

public void BatchPrint(List<LabelData> dataList) {var printJob = new PrintJob {PrinterName = "Zebra ZT410",Copies = 3,PaperSize = PaperSize.Custom(6, 4)};foreach (var item in dataList) {templateEngine.SetVariable("ProductName", item.Name);templateEngine.SetVariable("ExpiryDate", item.Expiry.ToString("yyyy-MM-dd"));if (item.NeedsPrint) {printJob.AddPage(templateEngine.GeneratePage());}}printJob.SendToPrinter();
}

三、高级功能实现

1. 动态模板选择

public class TemplateSelector {public string SelectTemplate(LabelData data) {return data.ProductType switch {ProductType.Food => "FoodLabel.btw",ProductType.Pharmaceutical => "PharmaLabel.btw",_ => "DefaultLabel.btw"};}
}

2. 打印队列管理

public class PrintQueue {private Queue<PrintJob> _queue = new Queue<PrintJob>();public void Enqueue(PrintJob job) {_queue.Enqueue(job);}public void ProcessQueue() {while (_queue.Count > 0) {var job = _queue.Dequeue();job.Execute();}}
}

3. 错误处理机制

public class PrintExceptionHandler {public void HandleError(Exception ex, PrintJob job) {_logger.LogError($"打印失败: {job.Id} - {ex.Message}");if (job.RetryCount < 3) {job.RetryCount++;_printQueue.Enqueue(job);}}
}

四、性能优化策略

1. 打印任务合并

public void MergeJobs(List<PrintJob> jobs) {var merged = new PrintJob {PrinterName = jobs[0].PrinterName,Pages = jobs.SelectMany(j => j.Pages).ToList()};_printController.Send(merged);
}

2. 打印机状态监控

public class PrinterMonitor {public PrinterStatus GetStatus() {var status = new PrinterStatus();status.IsOnline = CheckPrinterOnline();status.PaperLevel = GetPaperLevel();status.InkLevel = GetInkLevel();return status;}
}

3. 内存优化方案

// 使用对象池管理模板实例
public class TemplatePool {private Queue<BartenderTemplate> _pool = new Queue<BartenderTemplate>();public BartenderTemplate GetTemplate() {return _pool.Count > 0 ? _pool.Dequeue() : LoadTemplate();}public void ReturnTemplate(BartenderTemplate template) {_pool.Enqueue(template);}
}

五、完整项目结构

LabelPrintingApp/
├── Data/
│   ├── DataLoader.cs
│   └── Models/
│       └── LabelData.cs
├── Templates/
│   ├── FoodLabel.btw
│   └── PharmaLabel.btw
├── Services/
│   ├── BartenderService.cs
│   └── PrintService.cs
├── UI/
│   └── MainForm.xaml
└── Utils/├── Logger.cs└── PrinterMonitor.cs

六、调试与测试

1. 单元测试示例

[TestClass]
public class PrintServiceTests {[TestMethod]public void TestBatchPrint() {var mockData = new List<LabelData> { /* 测试数据 */ };var service = new PrintService();service.Print(mockData);Assert.AreEqual(3, mockData[0].PrintCount);}
}

2. 压力测试方案

public void StressTest() {var stopwatch = Stopwatch.StartNew();var tasks = new List<Task>();for (int i = 0; i < 1000; i++) {tasks.Add(Task.Run(() => _printer.Print(testData)));}Task.WhenAll(tasks).Wait();stopwatch.Stop();Console.WriteLine($"1000标签打印耗时: {stopwatch.ElapsedMilliseconds}ms");
}

七、部署与维护

1. 安装包配置

必备组件：.NET Framework 4.8+、Bartender Runtime
驱动依赖：打印机厂商SDK（Zebra/ZebraDesigner等）

2. 日志系统配置

<log4net><appender name="FileAppender" type="log4net.Appender.FileAppender"><file value="logs\print.log" /><layout type="log4net.Layout.PatternLayout"><conversionPattern value="%date [%thread] %-5level %logger - %message%newline" /></layout></appender><root><level value="DEBUG" /><appender-ref ref="FileAppender" /></root>
</log4net>

八、扩展功能建议

1. Web服务集成

[HttpPost]
public IActionResult PrintLabel([FromBody] PrintRequest request) {var service = new PrintService();service.Print(request.LabelData);return Ok(new { Status = "Printing" });
}

2. 移动端支持

开发UWP应用实现移动端打印
集成蓝牙/WiFi打印机连接

3. 云打印方案

public class CloudPrintService {public async Task PrintAsync(LabelData data) {var pdf = GeneratePdf(data);await _cloudStorage.UploadAsync(pdf);await _printService.SendToCloudPrinter();}
}