完整的例子，出自MSDN

示例

// File: Add.cs

namespace UtilityMethods

{

public class AddClass

{

public static long Add(long i, long j)

{

return (i + j);

}

}

}

// File: Mult.cs

namespace UtilityMethods

{

public class MultiplyClass

{

public static long Multiply(long x, long y)

{

return (x y);

}

}

}

// File: TestCode.cs

using UtilityMethods;

class TestCode

{

static void Main(string[] args)

{

System.Console.WriteLine("Calling methods from MathLibrary.DLL:");

if (args.Length != 2)

{

System.Console.WriteLine("Usage: TestCode <num1> <num2>");

return;

}

long num1 = long.Parse(args[0]);

long num2 = long.Parse(args[1]);

long sum = AddClass.Add(num1, num2);

long product = MultiplyClass.Multiply(num1, num2);

System.Console.WriteLine("{0} + {1} = {2}", num1, num2, sum);

System.Console.WriteLine("{0} {1} = {2}", num1, num2, product);

}

}

有些东西是要一点点积累的