c# 统计标点符号逗号和句号的个数（汉字标点）

        public static int BiaodianCount(string strText)
        {
            int count = strText.Length;
            int num = 0;
            for (int i = 0; i < count; i++)
            {
                if (strText[i].ToString() == "，" || strText[i].ToString() == "。")
                {
                    num++;
                }
            }
            return num;
        }