c# - C#尝试键入强制转换数组值

Question

在以下代码中尝试从数组字符串值转换 int 时；

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


    namespace hourscount
    {
        class Program
        {
            static void Main(string[] args)
            {
                string delimiter = ":";
                string time1 = Console.ReadLine();
                string time2 = Console.ReadLine();

                if (time1 == null || time2 == null)
                {
                    Console.WriteLine("Program expects two values!");
                    Console.ReadLine();

                }
                else
                {
                    string[] time1var = time1.Split(new string[] {delimiter}, StringSplitOptions.None);
                    string[] time2var = time2.Split(new string[] { delimiter }, StringSplitOptions.None);
                    int time2Intvar1 = int.TryParse(time2var[0]);
                    int time1Intvar1 = int.TryParse(time1var[0]);
                    int time2Intvar2 = int.TryParse(time2var[1]);
                    int time1Intvar2 = int.TryParse(time1var[1]);
                    int realHours = (time2Intvar1 - time1Intvar1);
                    Console.ReadLine();
                }
            }

        }
    }

我收到以下错误；错误 1 ​​方法“TryParse”没有重载需要 1 个参数

Answer 1

用它作为

int time2Intvar1;
bool isOK = int.TryParse(time2var[0],out time2Intvar1);

有关更多信息，请参阅

http://www.dotnetperls.com/int-tryparse

http://msdn.microsoft.com/en-us/library/f02979c7.aspx

Answer 2

您需要提供以下out参数int.TryParse：

int time2Intvar1;
bool canBeParsed = int.TryParse(time2var[0], out time2Intvar1);

之后初始化。