判断一个字符串中是否包含另一个字符串数组或列表中的代码,C#代码库,德仔网

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【C#】判断一个字符串中是否包含另一个字符串数组或列表中的

作者:涌 / 发布于2017/3/15/ 696

using System;
using System.Collections.Generic;
using System.Linq;

namespace Test
{
  class Program
  {
    static void Main(string[] args)
    {
      const string str = "This is a test string.";
      var excludeWordList = new List<string> { "is", "test", "string" };
      Console.WriteLine("字符串{0}{1}检测集合中的元素", str, CheckMethod_1(str, excludeWordList) ? "包含" : "不包含");
      Console.WriteLine("字符串{0}{1}检测集合中的元素", str, CheckMethod_2(str, excludeWordList) ? "包含" : "不包含");
      Console.ReadKey();
    }

    /// <summary>
    /// foreach循环(非LINQ表达式)
    /// </summary>
    /// <param name="str"></param>
    /// <param name="excludeWordList"></param>
    /// <returns></returns>
    static bool CheckMethod_1(string str, ICollection<string> excludeWordList)
    {
      if (str.Trim().Length <= 0 || excludeWordList == null || excludeWordList.Count <= 0)
      {
        return false;
      }
      var contain = false;
      foreach (var el in excludeWordList)
      {
        if (str.Contains(el))
        {
          contain = true;
          break;;
        }
      }
      return contain;
    }

    /// <summary>
    /// LINQ表达式
    /// </summary>
    /// <param name="str"></param>
    /// <param name="excludeWordList"></param>
    /// <returns></returns>
    static bool CheckMethod_2(string str, ICollection<string> excludeWordList = null)
    {
      if (str.Trim().Length <= 0 || excludeWordList == null || excludeWordList.Count <= 0)
      {
        return false;
      }
      return excludeWordList.Any(s => str.IndexOf(s, StringComparison.OrdinalIgnoreCase) >= 0);
    }
  }
}

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