using System.IO; string folderPath = @"C:\Users\user\Desktop\NewFolder"; string filePath = @"C:\Users\user\Desktop\NewFolder\NewFile.txt"; if (!Directory.Exists(folderPath)) { Directory.CreateDirectory(folderPath); } File.WriteAllText(filePath, "This is a new file.");
using System.IO; string folderPath = @"C:\Users\user\Desktop\NewFolder"; string existingFilePath = @"C:\Users\user\Desktop\ExistingFile.txt"; string newFilePath = @"C:\Users\user\Desktop\NewFolder\ExistingFile.txt"; if (!Directory.Exists(folderPath)) { Directory.CreateDirectory(folderPath); } File.Copy(existingFilePath, newFilePath);In this example, an existing file named ExistingFile.txt is copied and renamed as ExistingFile.txt in a new folder named NewFolder, using the Folder AddFile feature. Package Library: System.IO Conclusion: Folder AddFile feature is a simple way to manage files in a Windows-based system using csharp. In both examples, the System.IO package library is used to implement the feature.