Install-Package MetroSet_UI

using MetroSet_UI.Forms;

public partial class Form1 : MetroSetForm
    {
        public Form1()
        {
            InitializeComponent();
        }
    }

Imports MetroSet_UI.Forms

public class Form1 : Inherits MetroSetForm
    
    Sub New()
    
    End Sub
    
End Class

using System;
using MetroSet_UI.Forms;
using System.Windows.Forms;
namespace MetroSet_UI_Example
{
    public partial class MetroSetForm1 : MetroSetForm 
    {
        public MetroSetForm1()
        {
            InitializeComponent();
        }

        private void MetroSetButton1_Click(object sender, EventArgs e)
        {
            MetroSetMessageBox.Show(this, "Content", "Caption", MessageBoxButtons.OK, MessageBoxIcon.Question);
        }

    }
}

Imports MetroSet_UI.Forms

public class Form1 : Inherits MetroSetForm
    
    Private Sub MetroSetButton1_Click(sender As Object, e As EventArgs)
			MetroSetMessageBox.Show(Me, "Content", "Caption", MessageBoxButtons.OKCancel, MessageBoxIcon.Question)
	End Sub
    
End Class