C#でExcelワークブックのメタデータを編集する方法

using IronXL;
using System;

WorkBook workBook = WorkBook.Load("sample.xlsx");

// Set author
workBook.Metadata.Author = "Your Name";
// Set comments
workBook.Metadata.Comments = "Monthly report";
// Set title
workBook.Metadata.Title = "July";
// Set keywords
workBook.Metadata.Keywords = "Report";

// Read the creation date of the excel file
DateTime? creationDate = workBook.Metadata.Created;

// Read the last printed date of the excel file
DateTime? printDate = workBook.Metadata.LastPrinted;

workBook.SaveAs("editedMetadata.xlsx");

Imports IronXL
Imports System

Private workBook As WorkBook = WorkBook.Load("sample.xlsx")

' Set author
workBook.Metadata.Author = "Your Name"
' Set comments
workBook.Metadata.Comments = "Monthly report"
' Set title
workBook.Metadata.Title = "July"
' Set keywords
workBook.Metadata.Keywords = "Report"

' Read the creation date of the excel file
Dim creationDate? As DateTime = workBook.Metadata.Created

' Read the last printed date of the excel file
Dim printDate? As DateTime = workBook.Metadata.LastPrinted

workBook.SaveAs("editedMetadata.xlsx")

using IronXL;
using System;
using System.IO;

public class BatchMetadataProcessor
{
    public static void ProcessFinancialReports(string folderPath)
    {
        // Get all Excel files in the directory
        string[] excelFiles = Directory.GetFiles(folderPath, "*.xlsx");

        foreach (string filePath in excelFiles)
        {
            // Load the workbook
            WorkBook workBook = WorkBook.Load(filePath);

            // Update metadata based on file content
            string fileName = Path.GetFileNameWithoutExtension(filePath);

            // Set consistent metadata across all reports
            workBook.Metadata.Author = "Finance Department";
            workBook.Metadata.Company = "Your Company Name";
            workBook.Metadata.Category = "Financial Reports";

            // Set dynamic metadata based on filename
            if (fileName.Contains("Q1"))
            {
                workBook.Metadata.Title = "Q1 Financial Report";
                workBook.Metadata.Keywords = "Q1, Finance, Quarterly";
            }
            else if (fileName.Contains("Q2"))
            {
                workBook.Metadata.Title = "Q2 Financial Report";
                workBook.Metadata.Keywords = "Q2, Finance, Quarterly";
            }

            // Add timestamp to comments
            workBook.Metadata.Comments = $"Processed on {DateTime.Now:yyyy-MM-dd HH:mm}";

            // Set the subject based on worksheet content
            WorkSheet sheet = workBook.DefaultWorkSheet;
            workBook.Metadata.Subject = $"Report containing {sheet.RowCount} data rows";

            // Save with updated metadata
            string outputPath = Path.Combine(folderPath, "processed", fileName + "_updated.xlsx");
            workBook.SaveAs(outputPath);
        }
    }
}

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