This exception is thrown when you attempt to access a file that does not exist.

public class FileNotFoundException : IOException {
// Public Constructors
   public FileNotFoundException( );
   public FileNotFoundException(string message);
   public FileNotFoundException(string message, Exception innerException);
   public FileNotFoundException(string message, string fileName);
   public FileNotFoundException(string message, string fileName, Exception innerException);
// Protected Constructors
   protected FileNotFoundException(System.Runtime.Serialization.SerializationInfo info,
       System.Runtime.Serialization.StreamingContext context);
// Public Instance Properties
   public string FileName{get; }
   public string FusionLog{get; }
   public override string Message{get; } 
// overrides Exception
// Public Instance Methods
   public override void GetObjectData(System.Runtime.Serialization.SerializationInfo info,
       System.Runtime.Serialization.StreamingContext context)
// overrides Exception
   public override string ToString( );    
// overrides Exception
}

Hierarchy

System.Object System.Exception(System.Runtime.Serialization.ISerializable) System.SystemException IOException FileNotFoundException