学C#第一个控制台程序，怎么一闪就退出了，看不到结果？
using System;
using System.Collections.Generic;
using System.Text;

namespace Addition
{
class Program
{
static void Main(string[] args)
{
string FirstNumber,
SecondNumber;
int number1,
number2,
sum;
Console.Write( "Please enter the first integer: ");
FirstNumber = Console.ReadLine();

Console.Write( "Please enter the second integer: ");
SecondNumber = Console.ReadLine();
number1 = Int32.Parse(FirstNumber);
number2 = Int32.Parse(SecondNumber);

sum = number1 + number2;
Console.WriteLine( "\n the sum is {0}. ",sum);
}
}
}

我运行程序，提示输入，输完二个数（假设50，70），就一闪而过退出了，根本看不到结果。按照书上的提示，应该有下面的提示：

the sum is 120.


为什么我看不到？请教！


[解决办法]
最后面在加个
Console.ReadLine();
[解决办法]
按Ctrl+F5
[解决办法]
控制台程序，就是在控制台下面执行的。

如果想停顿，就 在后面加

Console.Read();
[解决办法]
using System;
using System.Collections.Generic;
using System.Text;

namespace Addition
{
class Program
{
static void Main(string[] args)
{
string FirstNumber,
SecondNumber;
int number1,
number2,
sum;
Console.Write( "Please enter the first integer: ");
FirstNumber = Console.ReadLine();

Console.Write( "Please enter the second integer: ");
SecondNumber = Console.ReadLine();
number1 = Int32.Parse(FirstNumber);

number2 = Int32.Parse(SecondNumber);

sum = number1 + number2;
Console.WriteLine( "\n the sum is {0}. ",sum);
Console.ReadLine();
}
}
}

[解决办法]
年轻人，有前途，记得我第一个控制台程序写的是：

Console.WriteLine( "Hello World! ");

:)