public bool IsEmpty { get; }

Public ReadOnly Property IsEmpty As Boolean

using DevExpress.Drawing;
using System;
using System.Collections.Generic;
// ...

if (DXFontRepository.Instance.IsEmpty)
    Console.WriteLine("Font repository is empty.");
else
{
    Console.WriteLine("Font repository contains the following fonts:");
    IList<DXFontData> fonts = DXFontRepository.Instance.GetFonts();
    for (int i = 0; i < fonts.Count; i++)
    {
        Console.WriteLine($" \u002A {fonts[i].Name}");
    }
}

Imports DevExpress.Drawing
Imports System
Imports System.Collections.Generic
' ...

If DXFontRepository.Instance.IsEmpty Then
    Console.WriteLine("Font repository is empty.")
Else
    Console.WriteLine("Font repository contains the following fonts:")
    Dim fonts As IList(Of DXFontData) = DXFontRepository.Instance.GetFonts()
    For i As Integer = 0 To fonts.Count - 1
        Console.WriteLine($" " & ChrW(&H002A).ToString() & " {fonts(i).Name}")
    Next i
End If