class Textbox_Hint_Text
    {
        TextBox textboxs = new TextBox();
        private void textbox_MouseEnter(object sender, MouseEventArgs e)
        {
            textboxs.Text = "";
            textboxs.Foreground = Brushes.White;
        }

        private void textbox_MouseLeave(object sender, MouseEventArgs e)
        {
            if (textboxs.Text.Length == 0)
            {
                textboxs.Text = "Search";
                textboxs.Foreground = Brushes.Gray;
            }
        }
    }