清空多个文本框

 private void ClearText(Control cParent)
    {
        foreach (Control c in cParent.Controls)
        {
            if (c.HasControls())
            {
                ClearText(c);
           
            }
            else
            {
                if (c is TextBox)
                {
                    ((TextBox)c).Text = string.Empty;
                }
            }
        }
    }