c#获得txt文件中字符的个数

 try
                {               
                string str = File .ReadAllText ( @"map40x10.txt" );
               // int hz = Regex .Matches ( str , @"[\u4E00-\u9FFF]" ) .Count;//汉字
               // int en = Regex .Matches ( str , "[A-Za-z]" ) .Count;
                int num = Regex .Matches ( str , @"\d" ) .Count;//数字
                int nr = Regex .Matches ( str , @"\r" ) .Count + 1;//行数
                Console .WriteLine ( "数字个数={0},行数={1}" , num , nr );
                Console .WriteLine ( str );
                }
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原文链接：https://blog.csdn.net/zjc_game_coder/article/details/64921398