Why can't I use these methods to check installed fonts?

Question

I have used every suggested methods from this following topic but no luck.

Test if a Font is installed

When I debug, it always skip after the "If" condition line without checking. I don't know why.

For example:

string fontName = "Consolas";
float fontSize = 12;

using (Font fontTester = new Font( 
       fontName, 
       fontSize, 
       FontStyle.Regular, 
       GraphicsUnit.Pixel)) 
{
    if (fontTester.Name == fontName) <<<<< [1] 
    {
        // Font exists
    }
    else
    {
        // Font doesn't exist
    }
} <<<<< [2]

After I marked and pressed F10/F11 on [1] line, it always go to [2] without checking.

This is my actual code:

private static void Main(string[] args)
{
    if (args.Length == 0)
    {
        args = new string[] { AppDomain.CurrentDomain.BaseDirectory + System.Reflection.Assembly.GetExecutingAssembly().GetName().Name + ".txt" };
    }
    if (args.Length > 0)
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);

        string fontName = "Free 3 of 9 Extended";
        float fontSize = 12;

        using (Font fontTester = new Font( 
               fontName, 
               fontSize, 
               FontStyle.Regular, 
               GraphicsUnit.Pixel)) 
        {
             if (fontTester.Name == fontName)
             {
                 // Font exists
             }
             else
             {
                 // Font doesn't exist
             }
        }

        Application.Run(new MenuForm());
    }
}

UPDATED:

I checked my project properties again and unchecked "Optimize Code" in "Build" tab then it's worked.