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Aspose.Cells FOSS para .NET

Cree, modifique y guarde libros de trabajo Excel .xlsx desde .NET — gratuito y de código abierto, sin dependencia de Microsoft Office.

Aspose.Cells FOSS for .NET Aspose.Cells FOSS
for .NET

Documentación GitHub

Biblioteca .NET de código abierto para hojas de cálculo de Excel

Aspose.Cells FOSS for .NET es una biblioteca de código abierto, con licencia MIT, gratuita para trabajar con archivos de hojas de cálculo Excel en aplicaciones .NET. Instálala con un único comando dotnet add package Aspose.Cells_FOSS y comienza a crear libros de trabajo, leer celdas, aplicar estilos, añadir formato condicional, hipervínculos, validación de datos y autofiltros — todo sin requerir Microsoft Excel ni ninguna biblioteca nativa de Office.

La biblioteca expone una API limpia construida alrededor de Workbook, Worksheet, Cells y Cell — los objetos familiares que todo desarrollador de hojas de cálculo conoce. Construye un Workbook para cargar un archivo .xlsx existente o crear uno en blanco, accede a las hojas de cálculo a través de la colección Worksheets, lee y escribe valores de celdas con PutValue y aplica estilos mediante GetStyle()/SetStyle(). Las fórmulas se almacenan literalmente como cadenas y son evaluadas por el visor al abrir, no por la biblioteca en tiempo de ejecución.

Debido a que la biblioteca es código .NET puro gestionado sin dependencias nativas, se ejecuta idénticamente en Windows, macOS, Linux, contenedores Docker y entornos sin servidor como Azure Functions y AWS Lambda. La Licencia MIT permite el uso comercial sin restricciones, sin regalías, licencias por asiento ni tarifas por despliegue.

Read and Write Excel Files

  • XLSX read/write: Open and save workbooks with full round-trip fidelity using Workbook(fileName) and Save(fileName).
  • Cell values: Write string, int, bool, decimal, and DateTime values with Cell.PutValue(value).
  • Cell access: Read values with Cell.StringValue, Cell.Value, and Cell.IntValue.
  • Formulas: Store formula strings via Cell.Formula — evaluated by Excel on open.
  • Worksheet navigation: Access sheets by index or name via Workbook.Worksheets.

Where Aspose.Cells FOSS for .NET Can Be Used

  • Report generation: Build branded Excel reports in .NET server applications.
  • Data export: Write database query results directly to .xlsx without Office.
  • CI/CD automation: Generate test-result workbooks inside Docker or Linux CI.
  • ETL workflows: Read input sheets, transform data, and write output workbooks.
  • Serverless functions: Run inside Azure Functions or AWS Lambda without dependencies.

Cell Styling and Conditional Formatting

  • Font styling: Apply bold, italic, font size, and color via CellStyle.Font.
  • Fill patterns: Set background colors with CellStyle.ForegroundColor and FillPattern.Solid.
  • Conditional formatting: Add FormatConditionType.CellValue, Expression, ColorScale, DataBar, and IconSet rules via Worksheet.ConditionalFormattings.
  • Style normalization: Use StyleRepository.Normalize(style) for consistent style application.
  • Number formats: Assign custom number format strings per cell.

Formatting Use Cases

  • Dashboard reports: Apply color scales and data bars to highlight KPI ranges.
  • Status sheets: Use icon sets to visually categorize row states.
  • Financial workbooks: Format currency and date columns with built-in number formats.
  • Header styling: Bold and color header rows to distinguish them from data rows.

Data Validation and Auto-Filters

  • Validation rules: Add whole-number, decimal, list, and date validations via ValidationCollection.Add().
  • Operators: Use OperatorType.Between, GreaterThan, LessThan, and others.
  • Validation type: Set ValidationType.WholeNumber, Decimal, List, Date, or Custom.
  • Auto-filters: Apply column filters on a range with AutoFilter and AutoFilter.FilterColumns.
  • Cell areas: Define validation ranges using CellArea.CreateCellArea(start, end).

Validation Use Cases

  • Data entry forms: Restrict input to valid ranges before the workbook is shared.
  • Budget templates: Enforce whole-number budget cells with min/max bounds.
  • Reporting pipelines: Validate output data before delivering to stakeholders.
  • List constraints: Lock cells to a pre-defined dropdown list of allowed values.

Hyperlinks, Named Ranges, and Protection

  • Hyperlinks: Add external URLs, internal cell references, and mailto links via HyperlinkCollection.Add().
  • Named ranges: Define global and sheet-scoped named ranges with DefinedNameCollection.Add().
  • Workbook protection: Lock workbook structure using WorkbookProtection.
  • Worksheet protection: Protect individual sheets with Worksheet.Protect().
  • Load diagnostics: Inspect malformed input using LoadDiagnostics and LoadIssue.

Governance and Collaboration Use Cases

  • Template distribution: Protect sheets to prevent accidental formula overwrite.
  • Shared workbooks: Use named ranges to create stable cross-sheet references.
  • Audit trails: Link cells to external documentation URLs via hyperlinks.
  • Input validation: Combine protection with validation to enforce data governance.

Create a Workbook and Write Cells

Install the NuGet package, then create a Workbook, access the first Worksheet, and write values to cells using PutValue. The example demonstrates writing multiple value types and performing a save-and-reload round trip.

dotnet add package Aspose.Cells_FOSS

using Aspose.Cells_FOSS;

var outputPath = "cell-data-roundtrip.xlsx";
var workbook = new Workbook();
var sheet = workbook.Worksheets[0];

sheet.Cells["A1"].PutValue("Hello");
sheet.Cells["B1"].PutValue(123);
sheet.Cells["C1"].PutValue(true);
sheet.Cells["D1"].PutValue(12.5m);
sheet.Cells["F1"].PutValue(10);
sheet.Cells["G1"].Formula = "=F1*2";
workbook.Save(outputPath);

var loaded = new Workbook(outputPath);
var loadedSheet = loaded.Worksheets[0];
Console.WriteLine(loadedSheet.Cells["A1"].StringValue);
Console.WriteLine(loadedSheet.Cells["G1"].Formula);

Apply Conditional Formatting

Add conditional formatting rules to highlight cell ranges. The example applies a between-value rule with a solid fill, an expression rule, a color scale, a data bar, and an icon set.

using Aspose.Cells_FOSS;

var workbook = new Workbook();
var sheet = workbook.Worksheets[0];
sheet.Name = "Conditional Formatting";

for (var i = 0; i < 10; i++)
    sheet.Cells[i, 0].PutValue(i + 1);

var cfCol = sheet.ConditionalFormattings[sheet.ConditionalFormattings.Add()];
cfCol.AddArea(CellArea.CreateCellArea("A1", "A10"));
var rule = cfCol[cfCol.AddCondition(FormatConditionType.CellValue,
    OperatorType.Between, "3", "7")];
var style = rule.Style;
style.Pattern = FillPattern.Solid;
style.ForegroundColor = Color.FromArgb(255, 255, 199, 206);
style.Font.Bold = true;
rule.Style = style;

workbook.Save("conditional-formatting.xlsx");

Add Hyperlinks and Named Ranges

Create external and internal hyperlinks, then define named ranges scoped to the workbook or a specific sheet.

using Aspose.Cells_FOSS;

var workbook = new Workbook();
var sheet = workbook.Worksheets[0];
sheet.Name = "Links";

sheet.Cells["A1"].PutValue("Docs");
var link = sheet.Hyperlinks[sheet.Hyperlinks.Add("A1", 1, 1, "https://example.com/docs")];
link.TextToDisplay = "Docs";
link.ScreenTip = "External docs";

var name = workbook.DefinedNames[workbook.DefinedNames.Add("GlobalRange", "='Links'!$A$1:$D$5")];
name.Comment = "Primary sample range";

workbook.Save("hyperlinks-and-names.xlsx");
  

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