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How do you copy a file from one location to another in C#?

ICSM Computer 580 05 May 2025

How do you copy a file from one location to another in C#?

Ask by ICSM Computer

Updated 19 May 2025

1 Answers

Anubhav Sharma 19 May 2025

In C#, you can copy a file from one location to another using the File.Copy method from the System.IO namespace.

Syntax:

File.Copy(string sourceFileName, string destFileName, bool overwrite);

sourceFileName: Full path to the file you want to copy.
destFileName: Full path where you want the file copied.
overwrite (optional): Set to true if you want to overwrite the destination file if it exists.

Example 1: Copy without overwrite

using System.IO;
File.Copy(@"C:\source\file.txt", @"C:\destination\file.txt");

This throws an exception if the destination file already exists.

Example 2: Copy with overwrite

File.Copy(@"C:\source\file.txt", @"C:\destination\file.txt", true);

This replaces the destination file if it already exists.

Exceptions to handle (optionally):

FileNotFoundException: If the source file doesn't exist.
IOException: If the destination file exists and overwrite is false.
UnauthorizedAccessException: If access is denied (e.g., permissions).
DirectoryNotFoundException: If the path is invalid.

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