Mastering WinForms & .NET

public class TabControlEx : TabControl 
{
    protected override void OnPaint(PaintEventArgs e) 
    {
        // Custom rendering logic
        base.OnPaint(e);
        var g = e.Graphics;
        g.SmoothingMode = SmoothingMode.AntiAlias;
        // premium visuals
    }
}

Public Class TabControlEx
    Inherits TabControl

    Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
        ' Custom rendering logic
        MyBase.OnPaint(e)
        Dim g = e.Graphics
        g.SmoothingMode = SmoothingMode.AntiAlias
        ' premium visuals
    End Sub
End Class