04 Oct C# Code to check if file exists or not

A simple C# program to check if a file exists. For this, use the File.Exists() method in C#. This allows us to check for both the current directory and a particular directory like C: D: E: etc.

• Current Directory
  File.Exists(“new.txt”)
• Particular Directory
  File.Exists(@”E:\demo.txt”)

Let us see the code to check if the file exists in C#. Consider, we have a file “new.txt” in the current directory:

using System;
using System.IO;

public class One {
 public static void Main() {

  // particular directory
  if (File.Exists(@"E:\demo.txt"))
   Console.WriteLine("File is in the directory");
  else
   Console.WriteLine("File isn't in the directory");

  // current directory
  if (File.Exists("new.txt"))
   Console.WriteLine("File is in the current directory");
  else
   Console.WriteLine("File isn't in the current directory");
 }
}

The output is as follows:

File isn't in the directory
File is in the current directory

Above, we have used the File.Exists() method to check for the existence of a file. The output displays that we have “new.txt” in the current directory.

To understand the code correctly, let us now see the following video: