C#标签批量打印程序开发

C#标签批量打印程序开发（集成Bartender解决方案）

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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

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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();
}

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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);
        }
    }
}

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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);
    }
}

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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

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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");
}

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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>

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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();
    }
}

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参考

• Bartender官方SDK文档
• 源码：C#标签打印程序，批量打印 youwenfan.com/contentcnl/92677.html
• TFORMer标签打印SDK技术手册
• .NET打印API深度解析
• 工业级标签打印最佳实践指南