自学C#记录—文本操作—取出现次数

            //演示例子
            string s = "大";
            int i = GetStringExistCount("abcdf大大大大dssdf大dfsdfad大sre顶wf大大sda大fwefr", s);
            Console.WriteLine("搜索到”{0}“在字符串中出现的总次数为[{1}]", s,i);
            Console.ReadKey();

        /// <summary>  
        /// 取出现次数  
        /// </summary>  
        /// <param name="SumString">总文本</param>  
        /// <param name="SearchString">欲找文本</param>  
        /// <returns>找到返回出现的总次数，没找到返回0</returns> 
        public static int GetStringExistCount(string SumString, string SearchString)
        {
            SumString = SumString.Replace(SearchString, "╋");
            return SumString.Split(‘╋‘).Length - 1;
        }