How to capture file not found exception in C#?

The file not found exception is raised when you try to find a file that does not exist.

Let’s say I have set a file in StreamReader, “new.txt” that does not exist. If you will try to access it using StreamReader(to read it), it will throw FileNotFoundException −

using (StreamReader sReader = new StreamReader("new.txt")) {
sReader.ReadToEnd();
}

To handle it, you need to use try and catch −

Try {
   using (StreamReader sReader = new StreamReader("new.txt")) {
      sReader.ReadToEnd();
   }
   }catch (FileNotFoundException e) {
      Console.WriteLine("File Not Found!");
      Console.WriteLine(e);
   }