Apply system font to Windows Forms Dialog

ApplySystemFontToForm.cs

using System;
using System.Drawing;
using System.Windows.Forms;

namespace SampleForms
{
    public partial class SampleForm : Form
    {
        public SampleForm()
        {
            InitializeComponent();
            ApplySystemFont();
        }

        private void ApplySystemFont()
        {
            ApplySystemFontToControl(this);
        }

        private static void ApplySystemFontToControl(Control control)
        {
            control.Font = SystemFonts.MessageBoxFont;

            foreach (Control childControl in control.Controls)
            {
                ApplySystemFontToControl(childControl);
            }
        }
    }
}