先引用：using System.Linq;//www.uzhanbao.com

   #region 移除数组中重复数据
        /// <summary>
        /// 移除数组中重复数据
        /// </summary>
        /// <param name="array">需要除重的数组</param>
        /// <returns>不重复数组</returns>
        public static string[] DelRepeatData(string[] array)
        {
            return array.GroupBy(p => p).Select(p => p.Key).ToArray();
        }
 
        #endregion
 

list去除重复

string[] stringArray = { "aaa", "bbb", "aaa", "ccc", "bbb", "ddd", "ccc", "aaa", "bbb", "ddd" }; 
//List用于存储从数组里取出来的不相同的元素 
List<string> listString = new List<string>(); 
foreach (string eachString in stringArray) 
{ 
if (!listString.Contains(eachString)) 
listString.Add(eachString); 
}