Rename files in C# code

Question

Hi masters, I have some Doubts on C# rename activity Please advise me and resolve this issue with simple c# code

Amit Mohanty · Answer

Try this latest one: static void RENAME1() { // Define the directory path where the files are located string directoryPath = @"D:\Data"; // Get all data.txt files in the directory string[] dataFiles = Directory.GetFiles(directoryPath, "*_data.txt"); foreach (string dataFilePath in dataFiles) { // Extract the filename without extension string baseFileName = System.IO.Path.GetFileNameWithoutExtension(dataFilePath); // e.g., LP-607-0220-Q-RO_data // Remove the '_data' suffix to get the new base name for the PDF string newPdfBaseName = baseFileName.Replace("_data", ""); // e.g., LP-607-0220-Q-RO string checkPdfFileName = baseFileName.Replace("-RO_data", ""); // e.g., LP-607-0220-Q // Find the corresponding PDF file string pdfFilePath = System.IO.Path.Combine(directoryPath, checkPdfFileName + ".pdf"); // Ensure correct casing for extension if (File.Exists(pdfFilePath)) { // Define the new PDF file path string newPdfFilePath = System.IO.Path.Combine(directoryPath, newPdfBaseName + ".pdf"); // Ensure correct casing for extension // Rename the PDF file File.Move(pdfFilePath, newPdfFilePath); Console.WriteLine($"Renamed '{pdfFilePath}' to '{newPdfFilePath}'"); } else { Console.WriteLine($"No matching PDF file found for '{pdfFilePath}'"); } } }

Rajadurai · Answer

Dear amit, After Manipulating Code, Reaname activity working Fine. Thank you

Abhishek Yadav · Answer

cannot make file name as ""

Rajadurai · Answer

Dear amit, The latest one also not working, it showing No matching PDF file

Rajadurai · Answer

Hi jithu, Please find the output

Rajadurai · Answer

Dear Jithu, There is no action while run the code and without error

Jithu Thomas · Answer

can you please share me the output.

Rajadurai · Answer

Dear Jithu & Amit i tried both methods not working

Amit Mohanty · Answer

I think the file search pattern "*.data.txt" is incorrect. It should be "*_data.txt" to match files ending with _data.txt. using System; using System.IO; static void RENAME1() { // Define the directory path where the files are located string directoryPath = @"C:\Data\Files\Output"; // Get all data.txt files in the directory string[] dataFiles = Directory.GetFiles(directoryPath, "*_data.txt"); foreach (string dataFilePath in dataFiles) { // Extract the filename without extension string baseFileName = Path.GetFileNameWithoutExtension(dataFilePath); // e.g., LP-607-0220-Q-RO_data // Remove the '_data' suffix to get the new base name for the PDF string newPdfBaseName = baseFileName.Replace("_data", ""); // e.g., LP-607-0220-Q-RO // Find the corresponding PDF file string pdfFilePath = Path.Combine(directoryPath, newPdfBaseName + ".pdf"); // Ensure correct casing for extension if (File.Exists(pdfFilePath)) { // Define the new PDF file path string newPdfFilePath = Path.Combine(directoryPath, newPdfBaseName + ".pdf"); // Ensure correct casing for extension // Rename the PDF file File.Move(pdfFilePath, newPdfFilePath); Console.WriteLine($"Renamed '{pdfFilePath}' to '{newPdfFilePath}'"); } else { Console.WriteLine($"No matching PDF file found for '{dataFilePath}'"); } } }

Jithu Thomas · Answer

using System; using System.IO; class Program { static void Main() { RENAME1(); } static void RENAME1() { // Define the directory path where the files are located string directoryPath = @"C:\DataFiles\Output\"; if (!Directory.Exists(directoryPath)) { Console.WriteLine($"The directory '{directoryPath}' does not exist."); return; } // Get all .data.txt files in the directory string[] dataFiles = Directory.GetFiles(directoryPath, "*.data.txt"); if (dataFiles.Length == 0) { Console.WriteLine("No .data.txt files found in the directory."); return; } foreach (string dataFilePath in dataFiles) { Console.WriteLine($"Processing file: {dataFilePath}"); // Extract the filename without extension string baseFileName = Path.GetFileNameWithoutExtension(dataFilePath); // e.g., LP-700-0220-Q-RQ_data // Remove the '.data' suffix to get the new base name for the PDF string newPdfBaseName = baseFileName.Replace(".data", ""); // e.g., LP-700-0220-Q-RQ // Find the corresponding PDF file string pdfFilePath = Path.Combine(directoryPath, newPdfBaseName + ".PDF"); if (File.Exists(pdfFilePath)) { // Define the new PDF file path string newPdfFilePath = Path.Combine(directoryPath, newPdfBaseName + "-modified.PDF"); // Rename the PDF file File.Move(pdfFilePath, newPdfFilePath); Console.WriteLine($"Renamed '{pdfFilePath}' to '{newPdfFilePath}'"); } else { Console.WriteLine($"No matching PDF file found for '{dataFilePath}'"); } } } } Please try this.

Tuhin Paul · Answer

using System; using System.IO; using System.Threading.Tasks; using Serilog; class Program { private const string DIRECTORY_PATH = @"C:\DataFiles\Output\"; private const string DATA_FILE_EXTENSION = ".data.txt"; private const string PDF_FILE_EXTENSION = ".PDF"; static async Task Main() { // Set up Serilog Log.Logger = new LoggerConfiguration() .WriteTo.Console() .WriteTo.File("log-.txt", rollingInterval: RollingInterval.Day) .CreateLogger(); try { await RenameDataFilesAsync(); } catch (Exception ex) { Log.Error(ex, "An unexpected error occurred."); } finally { Log.CloseAndFlush(); } } static async Task RenameDataFilesAsync() { if (!Directory.Exists(DIRECTORY_PATH)) { Log.Error($"Directory '{DIRECTORY_PATH}' does not exist."); return; } string[] dataFilePaths = GetDataFiles(DIRECTORY_PATH); foreach (string dataFilePath in dataFilePaths) { await ProcessDataFileAsync(dataFilePath); } } static string[] GetDataFiles(string directoryPath) { return Directory.GetFiles(directoryPath, "*" + DATA_FILE_EXTENSION); } static async Task ProcessDataFileAsync(string dataFilePath) { Log.Information($"Processing file: {dataFilePath}"); string baseFileName = Path.GetFileNameWithoutExtension(dataFilePath); string pdfBaseNameWithoutSuffix = baseFileName.Replace(".data", ""); string pdfFilePath = Path.Combine(DIRECTORY_PATH, pdfBaseNameWithoutSuffix + PDF_FILE_EXTENSION); if (File.Exists(pdfFilePath)) { await RenamePdfFileAsync(pdfFilePath, pdfBaseNameWithoutSuffix); } else { Log.Error($"No matching PDF file found for '{dataFilePath}'"); } } static async Task RenamePdfFileAsync(string pdfFilePath, string pdfBaseNameWithoutSuffix) { string newPdfFilePath = Path.Combine(DIRECTORY_PATH, pdfBaseNameWithoutSuffix + "-modified" + PDF_FILE_EXTENSION); try { // File.Move is a synchronous method, but for async, we can use Task.Run to offload it await Task.Run(() => File.Move(pdfFilePath, newPdfFilePath)); Log.Information($"Renamed '{pdfFilePath}' to '{newPdfFilePath}'"); } catch (Exception ex) { Log.Error(ex, $"Error renaming PDF file: {pdfFilePath}"); } } } In this code I have configured Serilog to log to the console and a file. The log file name will have a date suffix and will roll daily. Also File.Move is executed inside a Task.Run to make it asynchronous. Although File.Move itself is synchronous, using Task.Run helps to offload the work to a background thread and fits within an async pattern.