AutoWikiBrowser.MainForm.CategoryLeave C# (CSharp) Метод

        private void CategoryLeave(object sender, EventArgs e)
        {
            TextBox cat = sender as TextBox;

            if (cat != null)
            {
                string text = cat.Text.Trim('[', ']');

                text = Regex.Replace(text, "^" + Variables.NamespacesCaseInsensitive[Namespace.Category], "");
                cat.Text = Tools.TurnFirstToUpper(text);
            }
        }