Aspose.Words for .NET 教程（十五）：邮件合并基础完全指南

Aspose.Words for .NET下载地址 https://soft51.cc/software/175811283999782847

邮件合并（Mail Merge）是文档处理中的重要功能，它将固定的模板内容与动态数据相结合，批量生成个性化文档。Aspose.Words for .NET 提供了强大的邮件合并 API，本教程将全面介绍其核心概念和实际应用。

15.1 邮件合并原理与流程

邮件合并基本概念

邮件合并涉及三个核心要素：

主文档（模板）：包含固定内容和合并字段
数据源：提供变量数据（数据库、Excel、XML等）
合并结果：根据数据源生成的个性化文档

基础示例

using Aspose.Words;
using System.Data;

public static void BasicMailMerge()
{
    // 创建文档模板
    Document doc = new Document();
    DocumentBuilder builder = new DocumentBuilder(doc);
    
    builder.Write("尊敬的 ");
    builder.InsertField("MERGEFIELD CustomerName \\* MERGEFORMAT", "«CustomerName»");
    builder.Write(" 先生/女士：\n\n");
    builder.Write("您的订单 ");
    builder.InsertField("MERGEFIELD OrderNumber \\* MERGEFORMAT", "«OrderNumber»");
    builder.Write(" 金额为 ");
    builder.InsertField("MERGEFIELD Amount \\# \"¥#,##0.00\"", "«Amount»");
    builder.Write(" 已确认。\n\n谢谢！");
    
    // 创建数据源
    DataTable data = new DataTable();
    data.Columns.Add("CustomerName");
    data.Columns.Add("OrderNumber");
    data.Columns.Add("Amount", typeof(decimal));
    
    data.Rows.Add("张三", "ORD-001", 1299.00m);
    data.Rows.Add("李四", "ORD-002", 2599.50m);
    data.Rows.Add("王五", "ORD-003", 999.99m);
    
    // 执行合并
    doc.MailMerge.Execute(data);
    doc.Save("basic_merge_result.docx");
}

合并流程控制

public static void ConfigureMergeOptions()
{
    Document doc = new Document("template.docx");
    
    // 配置合并选项
    doc.MailMerge.CleanupOptions = 
        MailMergeCleanupOptions.RemoveEmptyParagraphs |
        MailMergeCleanupOptions.RemoveContainingFields |
        MailMergeCleanupOptions.RemoveUnusedFields;
    
    doc.MailMerge.UseNonMergeFields = true;
    doc.MailMerge.PreserveUnusedTags = false;
    doc.MailMerge.TrimWhitespaces = true;
    
    // 字段映射
    doc.MailMerge.MappedDataFields.Add("CustomerName", "客户姓名");
    
    DataTable data = CreateSampleData();
    doc.MailMerge.Execute(data);
    doc.Save("configured_merge.docx");
}

15.2 数据源配置与连接

DataTable 数据源

public static void UseDataTable()
{
    Document doc = new Document("employee_template.docx");
    
    // 创建结构化数据
    DataTable employees = new DataTable("Employees");
    employees.Columns.Add("ID", typeof(int));
    employees.Columns.Add("Name");
    employees.Columns.Add("Department");
    employees.Columns.Add("Salary", typeof(decimal));
    employees.Columns.Add("HireDate", typeof(DateTime));
    
    employees.Rows.Add(1, "张三", "技术部", 8000.00m, DateTime.Parse("2020-01-15"));
    employees.Rows.Add(2, "李四", "销售部", 7500.00m, DateTime.Parse("2019-08-20"));
    employees.Rows.Add(3, "王五", "人事部", 6800.00m, DateTime.Parse("2021-03-10"));
    
    doc.MailMerge.Execute(employees);
    doc.Save("employee_reports.docx");
}

自定义数据源

public class CustomerDataSource : IMailMergeDataSource
{
    private readonly List<Customer> customers;
    private int currentIndex = -1;
    
    public CustomerDataSource(List<Customer> customers)
    {
        this.customers = customers;
    }
    
    public string TableName => "Customers";
    
    public bool MoveNext()
    {
        currentIndex++;
        return currentIndex < customers.Count;
    }
    
    public bool GetValue(string fieldName, out object fieldValue)
    {
        fieldValue = null;
        if (currentIndex < 0 || currentIndex >= customers.Count)
            return false;
            
        var customer = customers[currentIndex];
        
        switch (fieldName.ToLower())
        {
            case "name":
                fieldValue = customer.Name;
                return true;
            case "email":
                fieldValue = customer.Email;
                return true;
            case "city":
                fieldValue = customer.City;
                return true;
            case "totalpurchases":
                fieldValue = customer.TotalPurchases.ToString("C");
                return true;
        }
        return false;
    }
    
    public IMailMergeDataSource GetChildDataSource(string tableName)
    {
        return null;
    }
}

public class Customer
{
    public string Name { get; set; }
    public string Email { get; set; }
    public string City { get; set; }
    public decimal TotalPurchases { get; set; }
}

// 使用自定义数据源
public static void UseCustomDataSource()
{
    Document doc = new Document("customer_template.docx");
    
    var customers = new List<Customer>
    {
        new Customer { Name = "张三", Email = "zhang@example.com", City = "北京", TotalPurchases = 15000 },
        new Customer { Name = "李四", Email = "li@example.com", City = "上海", TotalPurchases = 22000 }
    };
    
    var dataSource = new CustomerDataSource(customers);
    doc.MailMerge.ExecuteWithRegions(dataSource);
    doc.Save("custom_source_result.docx");
}

数据库连接

using System.Data.SqlClient;

public static void UseDatabaseSource()
{
    Document doc = new Document("database_template.docx");
    
    string connectionString = "Server=.;Database=Sales;Integrated Security=true";
    string query = "SELECT CustomerName, OrderNumber, OrderDate, Amount FROM Orders WHERE Status = 'Completed'";
    
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        SqlDataAdapter adapter = new SqlDataAdapter(query, connection);
        DataTable orders = new DataTable();
        adapter.Fill(orders);
        
        doc.MailMerge.Execute(orders);
        doc.Save("database_merge_result.docx");
    }
}

15.3 合并字段插入与格式化

基本字段插入

public static void InsertMergeFields()
{
    Document doc = new Document();
    DocumentBuilder builder = new DocumentBuilder(doc);
    
    // 基本字段
    builder.Write("客户：");
    builder.InsertField("MERGEFIELD CustomerName", "«客户姓名»");
    builder.WriteBreak();
    
    // 格式化数字字段
    builder.Write("金额：");
    builder.InsertField("MERGEFIELD Amount \\# \"¥#,##0.00\"", "«金额»");
    builder.WriteBreak();
    
    // 格式化日期字段
    builder.Write("日期：");
    builder.InsertField("MERGEFIELD OrderDate \\@ \"yyyy年M月d日\"", "«日期»");
    
    doc.Save("formatted_template.docx");
}

条件字段

public static void ConditionalFields()
{
    Document doc = new Document();
    DocumentBuilder builder = new DocumentBuilder(doc);
    
    builder.Write("客户等级：");
    // 根据消费金额确定等级
    builder.InsertField(
        "IF { MERGEFIELD TotalAmount } >= 10000 \"VIP客户\" " +
        "{ IF { MERGEFIELD TotalAmount } >= 5000 \"高级客户\" \"普通客户\" }",
        "«客户等级»");
    
    builder.WriteBreak();
    builder.Write("享受折扣：");
    builder.InsertField(
        "IF { MERGEFIELD TotalAmount } >= 10000 \"9折\" " +
        "{ IF { MERGEFIELD TotalAmount } >= 5000 \"9.5折\" \"无折扣\" }",
        "«折扣»");
    
    // 测试数据
    DataTable table = new DataTable();
    table.Columns.Add("CustomerName");
    table.Columns.Add("TotalAmount", typeof(decimal));
    
    table.Rows.Add("张三", 15000m);
    table.Rows.Add("李四", 7500m);
    table.Rows.Add("王五", 3000m);
    
    doc.MailMerge.Execute(table);
    doc.Save("conditional_result.docx");
}

自定义字段处理

public class CustomFieldHandler : IFieldMergingCallback
{
    public void FieldMerging(FieldMergingArgs args)
    {
        switch (args.FieldName.ToLower())
        {
            case "customergrade":
                HandleCustomerGrade(args);
                break;
            case "formattedprice":
                HandleFormattedPrice(args);
                break;
        }
    }
    
    public void ImageFieldMerging(ImageFieldMergingArgs args)
    {
        if (args.FieldName == "CompanyLogo" && File.Exists("logo.png"))
        {
            args.ImageFileName = "logo.png";
            args.ImageWidth = new MergeFieldImageDimension(100);
            args.ImageHeight = new MergeFieldImageDimension(50);
        }
    }
    
    private void HandleCustomerGrade(FieldMergingArgs args)
    {
        if (args.FieldValue is decimal totalPurchase)
        {
            string grade = totalPurchase switch
            {
                >= 10000 => "钻石客户",
                >= 5000 => "黄金客户", 
                >= 2000 => "银牌客户",
                _ => "普通客户"
            };
            
            args.Text = grade;
            
            // 设置文本颜色
            Run run = (Run)args.Field.End.PreviousSibling;
            run.Font.Color = grade switch
            {
                "钻石客户" => System.Drawing.Color.Purple,
                "黄金客户" => System.Drawing.Color.Gold,
                "银牌客户" => System.Drawing.Color.Silver,
                _ => System.Drawing.Color.Black
            };
        }
    }
    
    private void HandleFormattedPrice(FieldMergingArgs args)
    {
        if (args.FieldValue is decimal price)
        {
            args.Text = $"¥{price:N2}";
            if (price > 1000)
            {
                Run run = (Run)args.Field.End.PreviousSibling;
                run.Font.Color = System.Drawing.Color.Red;
                run.Font.Bold = true;
            }
        }
    }
}

// 使用自定义处理器
public static void UseCustomHandler()
{
    Document doc = new Document("custom_template.docx");
    doc.MailMerge.FieldMergingCallback = new CustomFieldHandler();
    
    DataTable data = new DataTable();
    data.Columns.Add("CustomerGrade", typeof(decimal));
    data.Columns.Add("FormattedPrice", typeof(decimal));
    
    data.Rows.Add(15000m, 2500.00m);
    data.Rows.Add(3000m, 899.99m);
    
    doc.MailMerge.Execute(data);
    doc.Save("custom_handled_result.docx");
}

15.4 条件合并与规则设置

区域合并

public static void RegionMerging()
{
    Document doc = new Document();
    DocumentBuilder builder = new DocumentBuilder(doc);
    
    // 创建发票模板
    builder.Write("发票号：");
    builder.InsertField("MERGEFIELD InvoiceNumber", "«发票号»");
    builder.WriteBreak();
    builder.Write("客户：");
    builder.InsertField("MERGEFIELD CustomerName", "«客户名»");
    builder.WriteBreak();
    builder.WriteBreak();
    
    // 创建产品明细表格
    Table table = builder.StartTable();
    builder.InsertCell();
    builder.Write("产品");
    builder.InsertCell();
    builder.Write("数量");
    builder.InsertCell();
    builder.Write("单价");
    builder.InsertCell();
    builder.Write("小计");
    builder.EndRow();
    
    // 可重复的产品行
    builder.InsertCell();
    builder.Write("«TableStart:Products»");
    builder.InsertField("MERGEFIELD ProductName", "«产品名»");
    builder.InsertCell();
    builder.InsertField("MERGEFIELD Quantity", "«数量»");
    builder.InsertCell();
    builder.InsertField("MERGEFIELD UnitPrice \\# \"¥#,##0.00\"", "«单价»");
    builder.InsertCell();
    builder.InsertField("MERGEFIELD Subtotal \\# \"¥#,##0.00\"", "«小计»");
    builder.Write("«TableEnd:Products»");
    builder.EndRow();
    builder.EndTable();
    
    builder.WriteBreak();
    builder.Write("总计：");
    builder.InsertField("MERGEFIELD TotalAmount \\# \"¥#,##0.00\"", "«总计»");
    
    // 创建分层数据
    DataSet dataSet = new DataSet();
    
    // 主表
    DataTable invoice = new DataTable("Invoice");
    invoice.Columns.Add("InvoiceNumber");
    invoice.Columns.Add("CustomerName");
    invoice.Columns.Add("TotalAmount", typeof(decimal));
    invoice.Rows.Add("INV-2024-001", "ABC公司", 3500.00m);
    
    // 明细表
    DataTable products = new DataTable("Products");
    products.Columns.Add("ProductName");
    products.Columns.Add("Quantity", typeof(int));
    products.Columns.Add("UnitPrice", typeof(decimal));
    products.Columns.Add("Subtotal", typeof(decimal));
    
    products.Rows.Add("笔记本电脑", 2, 1500.00m, 3000.00m);
    products.Rows.Add("无线鼠标", 5, 100.00m, 500.00m);
    
    dataSet.Tables.Add(invoice);
    dataSet.Tables.Add(products);
    
    doc.MailMerge.ExecuteWithRegions(dataSet);
    doc.Save("invoice_with_regions.docx");
}

嵌套区域合并

public static void NestedRegions()
{
    Document doc = new Document();
    DocumentBuilder builder = new DocumentBuilder(doc);
    
    builder.Write("销售报告\n\n");
    
    // 销售代表区域
    builder.Write("«TableStart:SalesReps»");
    builder.Write("销售代表：");
    builder.InsertField("MERGEFIELD RepName", "«代表姓名»");
    builder.WriteBreak();
    builder.Write("总销售额：");
    builder.InsertField("MERGEFIELD TotalSales \\# \"¥#,##0.00\"", "«总销售额»");
    builder.WriteBreak();
    builder.WriteBreak();
    
    // 客户明细（嵌套区域）
    builder.Write("客户明细：\n");
    builder.Write("«TableStart:Customers»");
    builder.Write("  - ");
    builder.InsertField("MERGEFIELD CustomerName", "«客户名»");
    builder.Write("：");
    builder.InsertField("MERGEFIELD CustomerSales \\# \"¥#,##0.00\"", "«销售额»");
    builder.WriteBreak();
    builder.Write("«TableEnd:Customers»");
    builder.WriteBreak();
    builder.Write("«TableEnd:SalesReps»");
    
    // 创建嵌套数据
    DataSet dataSet = new DataSet();
    
    DataTable reps = new DataTable("SalesReps");
    reps.Columns.Add("RepName");
    reps.Columns.Add("TotalSales", typeof(decimal));
    reps.Columns.Add("RepID", typeof(int));
    reps.Rows.Add("张三", 50000m, 1);
    reps.Rows.Add("李四", 60000m, 2);
    
    DataTable customers = new DataTable("Customers");
    customers.Columns.Add("CustomerName");
    customers.Columns.Add("CustomerSales", typeof(decimal));
    customers.Columns.Add("RepID", typeof(int));
    customers.Rows.Add("ABC公司", 30000m, 1);
    customers.Rows.Add("DEF企业", 20000m, 1);
    customers.Rows.Add("GHI集团", 35000m, 2);
    customers.Rows.Add("JKL公司", 25000m, 2);
    
    dataSet.Tables.Add(reps);
    dataSet.Tables.Add(customers);
    
    // 建立关系
    DataRelation relation = new DataRelation("RepCustomers",
        reps.Columns["RepID"], customers.Columns["RepID"]);
    dataSet.Relations.Add(relation);
    
    doc.MailMerge.ExecuteWithRegions(dataSet);
    doc.Save("nested_regions_report.docx");
}

15.5 合并结果预览与输出

预览功能

public static void PreviewMerge()
{
    Document template = new Document("preview_template.docx");
    
    DataTable data = new DataTable();
    data.Columns.Add("CustomerName");
    data.Columns.Add("ProductName");
    data.Columns.Add("Amount", typeof(decimal));
    
    data.Rows.Add("张三", "笔记本", 5999m);
    data.Rows.Add("李四", "手机", 2999m);
    data.Rows.Add("王五", "平板", 1999m);
    
    // 预览第一条记录
    Document preview = template.Clone();
    DataView singleRecord = new DataView(data);
    singleRecord.RowFilter = "CustomerName = '张三'";
    
    preview.MailMerge.Execute(singleRecord.ToTable());
    preview.Save("preview_sample.docx");
    
    // 获取合并字段信息
    string[] fields = template.MailMerge.GetFieldNames();
    Console.WriteLine("模板字段：" + string.Join(", ", fields));
    
    // 完整合并
    Document full = template.Clone();
    full.MailMerge.Execute(data);
    full.Save("preview_complete.docx");
    
    Console.WriteLine($"预览完成，共处理 {data.Rows.Count} 条记录");
}

多格式输出

public static void MultipleFormats()
{
    Document template = new Document("multi_template.docx");
    
    DataTable data = new DataTable();
    data.Columns.Add("CompanyName");
    data.Columns.Add("ContactName");
    data.Columns.Add("Email");
    
    data.Rows.Add("ABC科技", "张经理", "zhang@abc.com");
    data.Rows.Add("DEF企业", "李总", "li@def.com");
    
    for (int i = 0; i < data.Rows.Count; i++)
    {
        Document doc = template.Clone();
        DataRow row = data.Rows[i];
        
        // 单行数据
        DataTable single = data.Clone();
        single.Rows.Add(row.ItemArray);
        
        doc.MailMerge.Execute(single);
        
        string fileName = $"company_{i + 1}_{row["CompanyName"]}";
        
        // 多格式保存
        doc.Save($"{fileName}.docx");
        doc.Save($"{fileName}.pdf", SaveFormat.Pdf);
        
        HtmlSaveOptions htmlOptions = new HtmlSaveOptions
        {
            ExportImagesAsBase64 = true
        };
        doc.Save($"{fileName}.html", htmlOptions);
    }
}

15.6 批量邮件合并处理

大数据优化处理

public static void BatchProcessing()
{
    const int BATCH_SIZE = 100;
    string templatePath = "batch_template.docx";
    int totalRecords = 1000;
    
    for (int batch = 0; batch < totalRecords; batch += BATCH_SIZE)
    {
        Document template = new Document(templatePath);
        int currentSize = Math.Min(BATCH_SIZE, totalRecords - batch);
        DataTable batchData = CreateBatchData(batch, currentSize);
        
        template.MailMerge.Execute(batchData);
        template.Save($"batch_{batch / BATCH_SIZE + 1}.docx");
        
        // 资源清理
        template.Cleanup();
        batchData.Dispose();
        GC.Collect();
        
        Console.WriteLine($"批次 {batch / BATCH_SIZE + 1} 完成");
    }
}

private static DataTable CreateBatchData(int startIndex, int count)
{
    DataTable table = new DataTable();
    table.Columns.Add("ID", typeof(int));
    table.Columns.Add("Name");
    table.Columns.Add("Amount", typeof(decimal));
    
    Random random = new Random();
    string[] names = { "张三", "李四", "王五", "赵六" };
    
    for (int i = 0; i < count; i++)
    {
        table.Rows.Add(
            startIndex + i + 1,
            names[random.Next(names.Length)],
            random.Next(1000, 10000)
        );
    }
    
    return table;
}

错误处理机制

public class SafeBatchProcessor
{
    public void ProcessWithErrorHandling(DataTable data, string templatePath)
    {
        List<string> errors = new List<string>();
        int successCount = 0;
        
        for (int i = 0; i < data.Rows.Count; i++)
        {
            try
            {
                ProcessSingleRecord(data.Rows[i], templatePath, i);
                successCount++;
            }
            catch (Exception ex)
            {
                errors.Add($"记录 {i + 1}: {ex.Message}");
                Console.WriteLine($"记录 {i + 1} 处理失败: {ex.Message}");
            }
        }
        
        // 生成处理报告
        Console.WriteLine($"处理完成: 成功 {successCount}, 失败 {errors.Count}");
        if (errors.Count > 0)
        {
            File.WriteAllLines("error_log.txt", errors);
            Console.WriteLine("错误详情已保存到 error_log.txt");
        }
    }
    
    private void ProcessSingleRecord(DataRow record, string templatePath, int index)
    {
        Document template = new Document(templatePath);
        
        DataTable single = record.Table.Clone();
        single.Rows.Add(record.ItemArray);
        
        template.MailMerge.Execute(single);
        template.Save($"record_{index + 1}.docx");
        template.Cleanup();
    }
}

实际应用案例

员工薪资单生成

public static void GeneratePayslips()
{
    Document template = new Document("payslip_template.docx");
    template.MailMerge.FieldMergingCallback = new PayslipHandler();
    
    DataTable employees = new DataTable();
    employees.Columns.Add("EmployeeID");
    employees.Columns.Add("Name");
    employees.Columns.Add("Department");
    employees.Columns.Add("BaseSalary", typeof(decimal));
    employees.Columns.Add("Allowance", typeof(decimal));
    employees.Columns.Add("Bonus", typeof(decimal));
    employees.Columns.Add("PayDate", typeof(DateTime));
    
    employees.Rows.Add("E001", "张三", "技术部", 8000m, 1000m, 2000m, DateTime.Now);
    employees.Rows.Add("E002", "李四", "销售部", 7000m, 800m, 3000m, DateTime.Now);
    
    foreach (DataRow employee in employees.Rows)
    {
        Document payslip = template.Clone();
        DataTable single = employees.Clone();
        single.Rows.Add(employee.ItemArray);
        
        payslip.MailMerge.Execute(single);
        
        string fileName = $"薪资单_{employee["EmployeeID"]}_{DateTime.Now:yyyyMM}.docx";
        payslip.Save(fileName);
        
        Console.WriteLine($"生成薪资单: {fileName}");
    }
}

public class PayslipHandler : IFieldMergingCallback
{
    public void FieldMerging(FieldMergingArgs e)
    {
        if (e.FieldName == "TotalSalary" && e.Record is DataRow row)
        {
            decimal total = Convert.ToDecimal(row["BaseSalary"]) +
                          Convert.ToDecimal(row["Allowance"]) +
                          Convert.ToDecimal(row["Bonus"]);
            e.Text = total.ToString("C");
        }
        
        if (e.FieldName == "NetSalary" && e.Record is DataRow row2)
        {
            decimal total = Convert.ToDecimal(row2["BaseSalary"]) +
                          Convert.ToDecimal(row2["Allowance"]) +
                          Convert.ToDecimal(row2["Bonus"]);
            decimal tax = total > 5000 ? (total - 5000) * 0.1m : 0;
            e.Text = (total - tax).ToString("C");
        }
    }
    
    public void ImageFieldMerging(ImageFieldMergingArgs e) { }
}

合同批量生成

public static void GenerateContracts()
{
    Document template = new Document("contract_template.docx");
    
    DataTable contracts = new DataTable();
    contracts.Columns.Add("ContractNumber");
    contracts.Columns.Add("ClientName");
    contracts.Columns.Add("ClientAddress");
    contracts.Columns.Add("ServiceDescription");
    contracts.Columns.Add("ContractAmount", typeof(decimal));
    contracts.Columns.Add("SignDate", typeof(DateTime));
    contracts.Columns.Add("StartDate", typeof(DateTime));
    contracts.Columns.Add("EndDate", typeof(DateTime));
    
    contracts.Rows.Add("CT-2024-001", "ABC公司", "北京市朝阳区", "软件开发服务", 100000m, 
        DateTime.Now, DateTime.Now.AddDays(7), DateTime.Now.AddMonths(6));
    contracts.Rows.Add("CT-2024-002", "DEF企业", "上海市浦东区", "系统维护服务", 50000m, 
        DateTime.Now, DateTime.Now.AddDays(7), DateTime.Now.AddMonths(12));
    
    foreach (DataRow contract in contracts.Rows)
    {
        Document contractDoc = template.Clone();
        DataTable single = contracts.Clone();
        single.Rows.Add(contract.ItemArray);
        
        contractDoc.MailMerge.Execute(single);
        
        // 添加页脚
        foreach (Section section in contractDoc.Sections)
        {
            HeaderFooter footer = section.HeadersFooters[HeaderFooterType.FooterPrimary];
            if (footer == null)
            {
                footer = new HeaderFooter(contractDoc, HeaderFooterType.FooterPrimary);
                section.HeadersFooters.Add(footer);
            }
            
            DocumentBuilder builder = new DocumentBuilder(contractDoc);
            builder.MoveToHeaderFooter(HeaderFooterType.FooterPrimary);
            builder.Write($"合同编号：{contract["ContractNumber"]} | 第 ");
            builder.InsertField("PAGE");
            builder.Write(" 页，共 ");
            builder.InsertField("NUMPAGES");
            builder.Write(" 页");
        }
        
        string fileName = $"合同_{contract["ContractNumber"]}_{contract["ClientName"]}.docx";
        contractDoc.Save(fileName);
        
        // 同时生成PDF版本
        contractDoc.Save(Path.ChangeExtension(fileName, ".pdf"), SaveFormat.Pdf);
        
        Console.WriteLine($"生成合同: {fileName}");
    }
}

本教程全面介绍了 Aspose.Words for .NET 邮件合并功能的核心内容：

关键技术点

数据源灵活性：支持DataTable、自定义数据源、数据库等多种数据来源
字段格式化：提供丰富的数字、日期、文本格式化选项
区域合并：支持简单和嵌套的区域合并，适用于复杂文档结构
条件处理：通过IF字段和自定义回调实现复杂业务逻辑
批量优化：针对大数据量提供性能优化和错误处理机制

最佳实践

模板设计：合理设计文档模板，使用清晰的字段命名
数据验证：在合并前验证数据完整性和格式正确性
内存管理：处理大量数据时及时释放资源，避免内存泄漏
错误处理：实现完善的异常处理和日志记录机制
格式控制：使用合并选项控制输出格式和清理规则

应用场景

办公文档自动化：批量生成信函、报告、证书等
财务管理：自动化生成发票、薪资单、财务报表
合同管理：批量创建各类业务合同
客户关系管理：个性化客户通信和营销材料
人力资源：员工文档、入职材料等批量处理

Aspose.Words for .NET下载地址 https://soft51.cc/software/175811283999782847