无法访问字符串行上的阅读器= reader.ReadLine（）;

if (Easy)
{
    try
    {
        reader = File.OpenText(@"../../TxtFiles/eneral_Easy.txt");
        throw new FileNotFoundException();
    }
    catch (FileNotFoundException ex)
    {
        Console.WriteLine("Kan het bestand General_Easy.txt niet vinden!" + ex.Message);
    }
}
else
{
    reader = File.OpenText(@"../../TxtFiles/General_Hard.txt");
}

string line = reader.ReadLine();
while (line != null)
{
    questionList.Add(line);
    line = reader.ReadLine();
}
reader.Close();
NumberOfQuestions = questionList.Count;
if (Easy)
{
    try
    {
        reader = File