private void LeftButton_Click(object sender, EventArgs e)
{
if (_style.Selected > 0) _style.Selected--;
SelectImage(_style.Selected);
ImgLabel.Text = $"Image: {_style.Selected}";
LeftButton.Enabled = _style.Selected > 0;
if (!LeftButton.Enabled && HelpText != null) HelpText = "";
RightButton.Enabled = true;
}