具体代码如下：暂不支持浮点数四舍五入操作

1        static void Main(string[] args) 2         { 3             string numStr = "-177.00"; 4             int num; 5             string isSuccess=IntParse(numStr, out num)?"Yes":"No"; 6             Console.WriteLine($"字符串：{numStr} \n是否转换成功：{isSuccess}\n转换为整数：{num}"); 7             Console.ReadKey();                           8         } 9         private static bool IntParse(string str,out int res)10         {11             Dictionary
     
       numDic = new Dictionary
      
       12             {13                 {
   "0",0 },14                 {
   "1",1 },15                 {
   "2",2 },16                 {
   "3",3 },17                 {
   "4",4 },18                 {
   "5",5 },19                 {
   "6",6 },20                 {
   "7",7 },21                 {
   "8",8 },22                 {
   "9",9 }23             };24             bool isNegative = false;25             res = 0;26             if (!String.IsNullOrEmpty(str))27             {28                 //符号位29                 if (str.Contains("-"))30                 {31                     isNegative = true;32                     str = str.Replace("-", "");33                 }34                 //小数位35                 if (str.Contains("."))36                 {37                     //暂时先不进行四舍五入38                     str = str.Substring(0, str.IndexOf("."));39                 }40                 char[] nums = str.ToArray();41                 try42                 {43                     for (int i = 0; i < nums.Length; i++)44                     {45 46                         int n = numDic[nums[i].ToString()];47                         if (res != 0)48                             res = res * 10 + n;49                         else50                             res = n;51                     }52                 }53                 catch54                 {55                     return false;56                 }57                 if (isNegative)58                     res=-res;59                 return true;             60             }61             return false;62         }
      
     

运行结果：