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Home Forums How do you rename a file in C#? – MindStick
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1 Answers

ICSM Computer
ICSM Computer 29 May 2025
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In C#, you can rename a file using the File.Move method from the System.IO namespace. Here's how you do it:

Rename a File in C#

using System.IO;

string sourcePath = @"C:\path\to\oldFileName.txt";
string destinationPath = @"C:\path\to\newFileName.txt";

// This will rename the file (or move it if the path is different).
File.Move(sourcePath, destinationPath);

Notes:

This also moves the file if the destination path is in a different directory.

If destinationPath already exists, it will throw an IOException.

You can check if the file exists before renaming:

if (File.Exists(sourcePath) && !File.Exists(destinationPath))
{
    File.Move(sourcePath, destinationPath);
}
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