IronPDFを使ってC#でPDFメタデータを設定・編集する方法 — PDF編集ガイド

using IronPdf;
using System;
using System.Collections.Generic;

public class PDFMetadataManager
{
    public static void ProcessBatchMetadata(List<string> pdfPaths)
    {
        foreach (string path in pdfPaths)
        {
            var pdf = PdfDocument.FromFile(path);

            // Standardize metadata across all documents
            pdf.MetaData.Producer = "Company Document System v2.0";
            pdf.MetaData.Creator = "IronPDF";

            // Add processing timestamp
            pdf.MetaData.ModifiedDate = DateTime.Now;

            // Add document classification
            var metadata = pdf.MetaData.GetMetaDataDictionary();
            metadata["DocumentType"] = "Internal Report";
            metadata["Department"] = "Finance";
            metadata["SecurityLevel"] = "Confidential";

            pdf.MetaData.SetMetaDataDictionary(metadata);
            pdf.SaveAs(path.Replace(".pdf", "_processed.pdf"));
        }
    }
}

Imports IronPdf
Imports System
Imports System.Collections.Generic

Public Class PDFMetadataManager
    Public Shared Sub ProcessBatchMetadata(pdfPaths As List(Of String))
        For Each path As String In pdfPaths
            Dim pdf = PdfDocument.FromFile(path)

            ' Standardize metadata across all documents
            pdf.MetaData.Producer = "Company Document System v2.0"
            pdf.MetaData.Creator = "IronPDF"

            ' Add processing timestamp
            pdf.MetaData.ModifiedDate = DateTime.Now

            ' Add document classification
            Dim metadata = pdf.MetaData.GetMetaDataDictionary()
            metadata("DocumentType") = "Internal Report"
            metadata("Department") = "Finance"
            metadata("SecurityLevel") = "Confidential"

            pdf.MetaData.SetMetaDataDictionary(metadata)
            pdf.SaveAs(path.Replace(".pdf", "_processed.pdf"))
        Next
    End Sub
End Class

using IronPdf;
using IronPdf.MetaData;

ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Metadata</h1>");

PdfCustomMetadataProperties customProperties = pdf.MetaData.CustomProperties;

// Add custom property
customProperties.Add("foo", "bar"); // Key: foo, Value: bar

// Edit custom property
customProperties["foo"] = "baz";

Imports IronPdf
Imports IronPdf.MetaData

Dim renderer As New ChromePdfRenderer()
Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>Metadata</h1>")

Dim customProperties As PdfCustomMetadataProperties = pdf.MetaData.CustomProperties

' Add custom property
customProperties.Add("foo", "bar") ' Key: foo, Value: bar

' Edit custom property
customProperties("foo") = "baz"

using IronPdf;
using System;
using System.Linq;

public class DocumentTrackingSystem
{
    public static void AddTrackingMetadata(PdfDocument pdf, string userId, string projectId)
    {
        var customProps = pdf.MetaData.CustomProperties;

        // Add tracking information
        customProps.Add("ProcessedBy", userId);
        customProps.Add("ProcessedDate", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
        customProps.Add("ProjectID", projectId);
        customProps.Add("DocumentVersion", "1.0");
        customProps.Add("ReviewStatus", "Pending");

        // Add workflow metadata
        customProps.Add("WorkflowStep", "Initial Review");
        customProps.Add("NextReviewer", "John.Doe@company.com");
        customProps.Add("DueDate", DateTime.Now.AddDays(7).ToString("yyyy-MM-dd"));

        // Add compliance metadata
        customProps.Add("ComplianceChecked", "false");
        customProps.Add("RetentionPeriod", "7 years");
        customProps.Add("Classification", "Internal Use Only");
    }

    public static void UpdateReviewStatus(PdfDocument pdf, string status, string reviewer)
    {
        var customProps = pdf.MetaData.CustomProperties;

        // Update existing properties
        customProps["ReviewStatus"] = status;
        customProps["LastReviewedBy"] = reviewer;
        customProps["LastReviewDate"] = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");

        // Increment version if approved
        if (status == "Approved" && customProps.ContainsKey("DocumentVersion"))
        {
            var currentVersion = customProps["DocumentVersion"];
            var versionParts = currentVersion.Split('.');
            var minorVersion = int.Parse(versionParts[1]) + 1;
            customProps["DocumentVersion"] = $"{versionParts[0]}.{minorVersion}";
        }
    }
}

Imports IronPdf
Imports System
Imports System.Linq

Public Class DocumentTrackingSystem
    Public Shared Sub AddTrackingMetadata(pdf As PdfDocument, userId As String, projectId As String)
        Dim customProps = pdf.MetaData.CustomProperties

        ' Add tracking information
        customProps.Add("ProcessedBy", userId)
        customProps.Add("ProcessedDate", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"))
        customProps.Add("ProjectID", projectId)
        customProps.Add("DocumentVersion", "1.0")
        customProps.Add("ReviewStatus", "Pending")

        ' Add workflow metadata
        customProps.Add("WorkflowStep", "Initial Review")
        customProps.Add("NextReviewer", "John.Doe@company.com")
        customProps.Add("DueDate", DateTime.Now.AddDays(7).ToString("yyyy-MM-dd"))

        ' Add compliance metadata
        customProps.Add("ComplianceChecked", "false")
        customProps.Add("RetentionPeriod", "7 years")
        customProps.Add("Classification", "Internal Use Only")
    End Sub

    Public Shared Sub UpdateReviewStatus(pdf As PdfDocument, status As String, reviewer As String)
        Dim customProps = pdf.MetaData.CustomProperties

        ' Update existing properties
        customProps("ReviewStatus") = status
        customProps("LastReviewedBy") = reviewer
        customProps("LastReviewDate") = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")

        ' Increment version if approved
        If status = "Approved" AndAlso customProps.ContainsKey("DocumentVersion") Then
            Dim currentVersion = customProps("DocumentVersion")
            Dim versionParts = currentVersion.Split("."c)
            Dim minorVersion = Integer.Parse(versionParts(1)) + 1
            customProps("DocumentVersion") = $"{versionParts(0)}.{minorVersion}"
        End If
    End Sub
End Class

using IronPdf;

ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Metadata</h1>");

// Add custom property to be deleted
pdf.MetaData.CustomProperties.Add("willBeDeleted", "value");

// Remove custom property _ two ways
pdf.MetaData.RemoveMetaDataKey("willBeDeleted");
pdf.MetaData.CustomProperties.Remove("willBeDeleted");

Imports IronPdf

Dim renderer As New ChromePdfRenderer()
Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>Metadata</h1>")

' Add custom property to be deleted
pdf.MetaData.CustomProperties.Add("willBeDeleted", "value")

' Remove custom property _ two ways
pdf.MetaData.RemoveMetaDataKey("willBeDeleted")
pdf.MetaData.CustomProperties.Remove("willBeDeleted")