How to check and Close the Opened Forms

 public void CloseForm(Type formType)
        {
            try
            {
                foreach (Form form in Application.OpenForms)
                {
                    if (form.GetType().Name == formType.Name)
                    {
                        form.Close();
                        return;
                    }
                }
            }
            catch (Exception ex)
            {
             //
            }

        }