Question

C#中有没有类似于sql表达式“in”的效果？比如判断某数字有没有在一个数组里

Answer 1

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

namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
int[] a = new int[10];
a[0] = 1;
a[1] = 2;
a[2] = 3;
a[3] = 4;
a[4] = 5;
a[5] = 6;
a[6] = 7;

if (a.Contains(1))
{
Console.WriteLine("number 1 exists");
}

if (a.Contains(2))
{
Console.WriteLine("number 2 exists");
}

if (a.Contains(8))
{
Console.WriteLine("number 8 exists");
}

Console.Read();

}
}
}

Answer 2

List.Container()
http://msdn.microsoft.com/zh-cn/library/bhkz42b3(v=VS.80).aspx

Answer 3

数组有 Contain方法