1   private void button1_Click(object sender, EventArgs e) 2         { 3             string txt = textBox1.Text; 4             5             string[] filtetxt = File.ReadAllLines("网站过滤词.txt", Encoding.Default); //按系统默认编码读取敏感词文件 6              7             List
     
       listWord = new List
      
       ();            8  9             foreach (string str in filtetxt)10             {11                 string[] line = str.Split('=');12                 if (line[1]=="{Word}")13                 {14                     listWord.Add(line[0]);15                 }                16             }17 18             string strWord= string.Empty;//初始化为空19             20             StringBuilder sb = new StringBuilder();21             foreach (var item in listWord)22             {23                 sb.Append(item+"|");//将敏感词拼接成一个用“|”分割的的字符串24             }25             sb.Remove(sb.Length-1,1);//删掉最后一个“|”26 27             strWord= sb.ToString();//拼接{Word}长的正则表达式28 29 30             bool b = Regex.IsMatch(txt,strWord);31             if (b)32             {33                 MessageBox.Show("你输入的文字不符合要求~请重新输入~~~");34             }35         }