ExcelHelper.NPOI 0.3.3

There is a newer version of this package available.
See the version list below for details.
dotnet add package ExcelHelper.NPOI --version 0.3.3                
NuGet\Install-Package ExcelHelper.NPOI -Version 0.3.3                
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="ExcelHelper.NPOI" Version="0.3.3" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add ExcelHelper.NPOI --version 0.3.3                
#r "nuget: ExcelHelper.NPOI, 0.3.3"                
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install ExcelHelper.NPOI as a Cake Addin
#addin nuget:?package=ExcelHelper.NPOI&version=0.3.3

// Install ExcelHelper.NPOI as a Cake Tool
#tool nuget:?package=ExcelHelper.NPOI&version=0.3.3                

Excel 帮助类

  • 通过对象模型进行数据的导入导出,简单易用

  • 支持多种Excel驱动(NPOI, Aspose

  • 不同Excel驱动使用相同代码,可无感切换

  • 【导入】支持导入多个Sheet页 .ImportSheet<DemoIO>()

  • 【导入】支持导入图片 [ImportHeader("图片", IsImage = true)]

  • 【导入】支持导入配置数据限制 [ImportLimit("A1", "A2", "A3")]

  • 【导入】支持导入验证必填 [ImportHeader("A", IsRequired = true)]

  • 【导入】支持设置导入必填验证消息 [ImportHeader("A", RequiredMessage = "数据A必填")]

  • 【导入】支持导入移除前后空格 [ImportHeader("AA", Trim = Trim.Start)]

  • 【导入】支持导入数据映射 [ImportMapper("A3", "b")]

  • 【导入】支持导入数据唯一性校验 [ImportHeader("A", IsUnique = true)]

  • 【导入】支持导入组合数据唯一性校验 [ImportUnique(nameof(A), nameof(B))]

  • 【导出】支持导出多个Sheet页 .ExportSheet("sheet", data)

  • 【导出】支持导出图片 [ExportHeader("图片", IsImage = true)]

  • 【导出】支持导出格式化字符串 [ExportHeader("日期", Format = "yyyy/MM/dd")]

  • 【导出】支持导出设置列宽 [ExportHeader("日期", ColumnWidth = 30)]

  • 【导出】支持导出头设置字体颜色 [ExportHeader("A2", ColorName = "Red")]

  • 【导出】支持导出数据映射 [ExportMapper("a", "Aa")]

  • 【导出】支持导出表头设置备注信息 [ExportHeader("C2", Comment = "备注")]

  • 【导出】支持导出忽略指定字段导出 [ExportIgnore]

  • 【导出】支持导出时动态设置忽略导出字段 new ExportSetting()

  • 【导出】支持导出时设置Sheet位置 .SetSheetIndex("sheet", 1)

Nuget 引用

# 基于NPOI
dotnet add package ExcelHelper.NPOI

# 基于 Aspose
dotnet add package ExcelHelper.Aspose

基本使用

读数据

// 通过ExcelHelperBuilder从指定文件(指定流或指定内存字节)构建读取器
_excelHelper = new ExcelHelperBuilder().BuildRead("Excel.xlsx");
_excelHelper = new ExcelHelperBuilder().BuildRead(stream);
_excelHelper = new ExcelHelperBuilder().BuildRead(bytes);
// 导入,如果没有指定Sheet则从第一个sheet读取
var demos = _excelHelper.ImportSheet<DemoIO>();
// 指定了Sheet则从指定Sheet读取
var demos = _excelHelper.ImportSheet<DemoIO>("Sheet1");
// 指定多个Sheet名称时,依次读取,只要找到对应的Sheet则读取返回,可以适用于Sheet名称修改后的兼容
var demos = _excelHelper.ImportSheet<DemoIO>("Sheet1", "S1", "S");

写数据

// 通过ExcelHelperBuilder构建写入器
_excelHelper = new ExcelHelperBuilder().BuildWrite();
// 写入树datas到test页
_excelHelper.ExportSheet("test", datas);
// 写入树datas到test2页
_excelHelper.ExportSheet("test2", datas);
// 创建一个sheet页aaa,然后sheet页中依次写入数据data1,写入一个空行,写入数据data2,写入数据data3(不写入标题)
_excelHelper.CreateExcelSheet("aaa").AppendData(data1).AppendEmptyRow().AppendData(data2).AppendData(data3, false);
// 导出为bytes数据
var bytes = _excelHelper.ToBytes();
// 写入到文件
File.WriteAllBytes("test.xlsx", bytes);

导入导出模型

/// <summary>
/// 导入导出测试模型
/// </summary>
[ImportUnique(nameof(A), nameof(B))]
public class DemoIO
{
  [ImportHeader("A", IsRequired = true, IsUnique = false)]
  [ImportHeader("AA", Trim = Trim.Start)]
  [ExportHeader("A2", ColorName = "Red")]
  public string A { get; set; }

  [ImportHeader("B")]
  [ImportHeader("BB")]
  [ImportMapper("True", "true")]
  [ExportHeader("B2")]
  public string B { get; set; }

  [ImportHeader("C")]
  [ImportHeader("CC")]
  [ImportMapper("A3", "b")]
  [ImportMapper("False", "false")]
  [ExportHeader("C2", Comment = "备注")]
  [ExportMapper("a", "Aa")]
  [ExportMapper("b", "Ab")]
  [ExportMapper("c", "Ac")]
  public string C { get; set; }

  [ExportHeader("日期", ColumnWidth = 30, Format = "yyyy/MM/dd")]
  public DateTime DateTime { get; set; }

  [ExportIgnore]
  public DateTime Date { get; set; }

  [ExportMapper(0, "011")]
  [ExportHeader("数字", Format = "0.0")]
  public double Number { get; set; }

  public bool Boolean { get; set; }

  public string Formula { get; set; }

  [ExportMapper(Status.A, "AA")]
  [ExportMapper(null, "")]
  [ExportMapperElse("其它数据")]
  public Status? Status { get; set; }
  
  
  [ExportHeader("图片", IsImage = true)]
  [ImportHeader("图片", IsImage = true)]
  public byte[] Image { get; set; }
}

public enum Status
{
  A = 0,
  B = 1,
}

模型配置说明

导入

ImportHeaderAttribute

导入头设置,可以指定多个,方便兼容导入模板的改动。未配置时以属性名称作为列名称。

[ImportHeader("A")]   // 读取列A的数据
[ImportHeader("AA")]  // 读取列AA的数据
public string A { get; set; }

[ImportHeader("图片", IsImage = true)]  // 读取图片
public byte[] Image { get; set; }       // 图片数据必须用 byte[] 接收

[ImportHeader("A", IsRequired = true)] // 数据必须不能为空
public string A { get; set; }

[ImportHeader("A", RequiredMessage = "数据A必填")] // 数据必填消息自定义
public string A { get; set; }

[ImportHeader("A", IsUnique = false)] // 数据必须不能重复
public string A { get; set; }

[ImportHeader("AA", Trim = Trim.Start)]  // 依次数据前面的空白字符
public string A { get; set; }

ImportMapperAttribute

导入映射转换器,可以将导入数据进行转换,可指定多个

[ImportMapper("A3", "b")]           // 当Excel中数据为A3时读取后数据为b
[ImportMapper("False", "false")]    // 当Excel中数据为False时读取后为小写false
public string C { get; set; }
ImportMapperElseAttribute

与导入映射转换器ImportMapperAttribute配合使用,当ImportMapperAttribute没有匹配的数据时全部数据值设置为该属性配置的值。

[ImportMapper("A3", "b")]        // 当Excel中数据为A3时读取后数据为b
[ImportMapperElse("其它数据")]    // 否则其它数据都读取为"其它数据"
public string C { get; set; }
ImportLimitAttribute

导入限制,只能导入设置的数据

[ImportLimit("A1", "A2", "A3")]   // 导入限制
public string C { get; set; }
ImportUniqueAttribute

导入唯一性数据限制,在class上设置

[ImportUnique(nameof(A), nameof(B))] // A和B的组合数据都唯一
public class DemoIO
{
   // ...
}

导出

ExportHeaderAttribute

导出头设置,可以设置列名称,列备注信息,列宽度等。未配置时以属性名称作为列名称。

[ExportHeader("C2", Comment = "备注", IsAutoSizeColumn = true)]
public string C { get; set; }

[ExportHeader("日期", ColumnWidth = 30)]
public DateTime DateTime { get; set; }

[ExportHeader("图片", IsImage = true)]
public byte[] Image { get; set; }

[ExportHeader("A2", ColorName = "Red", IsBold = true, FontSize = 12)] // 指定导出标题字体
public string A { get; set; }
ExportMapperAttribute

导出映射器,可以对数据进行转换后导出,可以指定多个

[ExportMapper("a", "Aa")]
[ExportMapper("b", "Ab")]
[ExportMapper("c", "Ac")]
public string C { get; set; }
ExportMapperAttribute

与导出映射转换器ExportMapperAttribute配合使用,当ExportMapperAttribute没有匹配的数据时全部数据值设置为该属性配置的值。

[ExportMapper("A3", "b")]        // 当数据为A3时Excel中写入数据b
[ExportMapperrElse("其它数据")]    // 否则其它数据都写入为"其它数据"
public string C { get; set; }
ExportIgnoreAttribute

忽略导出该字段

[ExportIgnore]
public DateTime Date { get; set; }
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Version Downloads Last updated
0.8.0 79 11/8/2024
0.7.6 84 10/15/2024
0.7.5 109 9/26/2024
0.7.2 268 8/2/2024
0.7.1 120 7/24/2024
0.7.0 79 7/24/2024
0.6.2 406 2/2/2024
0.6.1 665 6/23/2023
0.4.0 386 4/6/2023
0.3.3 238 3/30/2023
0.3.1 214 3/28/2023
0.2.7 245 3/23/2023
0.1.0 409 10/15/2022