C# Directory.GetFiles（工作方式：開發者指南）

string[] pdfFiles = Directory.GetFiles("C:\\Documents\\PDFs", "*.pdf");
foreach (string file in pdfFiles)
{
    // Load the PDF with IronPDF
    var pdf = PdfDocument.FromFile(file);
    Console.WriteLine($"Processing file: {Path.GetFileName(file)}");
}

Dim pdfFiles() As String = Directory.GetFiles("C:\Documents\PDFs", "*.pdf")
For Each file As String In pdfFiles
	' Load the PDF with IronPDF
	Dim pdf = PdfDocument.FromFile(file)
	Console.WriteLine($"Processing file: {Path.GetFileName(file)}")
Next file

string[] pdfFiles = Directory.GetFiles("C:\\Documents\\PDFs", "*.pdf");
var recentFiles = pdfFiles.Where(file => File.GetLastWriteTime(file) > DateTime.Now.AddDays(-7));
foreach (string file in recentFiles)
{
    Console.WriteLine($"Recent file: {Path.GetFileName(file)}");
}

Dim pdfFiles() As String = Directory.GetFiles("C:\Documents\PDFs", "*.pdf")
Dim recentFiles = pdfFiles.Where(Function(file) File.GetLastWriteTime(file) > DateTime.Now.AddDays(-7))
For Each file As String In recentFiles
	Console.WriteLine($"Recent file: {Path.GetFileName(file)}")
Next file

string[] pdfFiles = Directory.GetFiles("C:\\Documents\\PDFs", "*.pdf");
var pdfAppend = new PdfDocument(200, 200);
foreach (string file in pdfFiles)
{
    var pdf = PdfDocument.FromFile(file);
    pdfAppend.AppendPdf(pdf);
}
pdfAppend.SaveAs("LargePdf.pdf");
Console.WriteLine("PDFs Appended successfully!");

Dim pdfFiles() As String = Directory.GetFiles("C:\Documents\PDFs", "*.pdf")
Dim pdfAppend = New PdfDocument(200, 200)
For Each file As String In pdfFiles
	Dim pdf = PdfDocument.FromFile(file)
	pdfAppend.AppendPdf(pdf)
Next file
pdfAppend.SaveAs("LargePdf.pdf")
Console.WriteLine("PDFs Appended successfully!")

using IronPdf;
using System;
using System.IO;

class Program
{
    static void Main()
    {
        // Retrieve all PDF file paths from the specified directory
        string[] pdfFiles = Directory.GetFiles("C:\\Users\\kyess\\Documents\\PDFs", "*.pdf");

        // Initialize a PdfDocument
        var pdfAppend = new PdfDocument(200, 200);

        // Create a text annotation to add to each PDF
        TextAnnotation annotation = new TextAnnotation(0)
        {
            Contents = "Processed by IronPDF",
            X = 50,
            Y = 50,
        };

        // Iterate over each file path, load, annotate, and save
        foreach (string file in pdfFiles)
        {
            var pdf = PdfDocument.FromFile(file);
            pdf.Annotations.Add(annotation);
            pdf.SaveAs(file);
        }
    }
}

Imports IronPdf
Imports System
Imports System.IO

Friend Class Program
	Shared Sub Main()
		' Retrieve all PDF file paths from the specified directory
		Dim pdfFiles() As String = Directory.GetFiles("C:\Users\kyess\Documents\PDFs", "*.pdf")

		' Initialize a PdfDocument
		Dim pdfAppend = New PdfDocument(200, 200)

		' Create a text annotation to add to each PDF
		Dim annotation As New TextAnnotation(0) With {
			.Contents = "Processed by IronPDF",
			.X = 50,
			.Y = 50
		}

		' Iterate over each file path, load, annotate, and save
		For Each file As String In pdfFiles
			Dim pdf = PdfDocument.FromFile(file)
			pdf.Annotations.Add(annotation)
			pdf.SaveAs(file)
		Next file
	End Sub
End Class