C# asp.net中字符串数组去重

 public static void Purge(ref List<string>needToPurge)
        {
           
            for(int i=0;i<needToPurge.Count-1;i++)
            {
                string deststring=needToPurge[i];
                for(int j=i+1;j<needToPurge.Count;j++)
                {
                    if(deststring.CompareTo(needToPurge[j])==0)
                    {
                        needToPurge.RemoveAt(j);
                        continue;
                    }
                }
            }
asp.net中的去重
 string[] para = this.textClass.Text.Split(',');
             string _str=string.Empty;
            for (int i = 0; i < para.Length; i++)
            {
         &nbs