用Equals比较字符串的比较 相等为true,不相等为false

  protected void Page_Load(object sender, EventArgs e)    {        //用Equals比较字符串的比较 相等为true,不相等为false        string str = "abc";        string str1 = "abC";        string str2 = "abc";        bool st = str.Equals(str1);        bool st1 = str.Equals(str2);        Response.Write(st);  //false         Response.Write(st1);  //true    }