C# 语句异常处理语句

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


namespace 自定义异常
{

class Triangle

{

public int a;

public int b;

public int c;

public int getCircumference()

{

if (a + b <=c || a + c <=b || b + c <=a) throw new Myexception();

return a + b + c;

}

public void showInfo()

{

if (a + b <= c || a + c <= b || b + c <= a) throw new Myexception();

Console.WriteLine("三边长为{0}，{1}，{2}", a, b, c);

}

}

class Myexception:Exception

{

public Myexception(): base("InvalidTriangleException")

{


}

//public Myexception(string message): base(message)

//{



//}


//public
Myexception (string message, Exception inner) : base(message, inner)

//{


//}

}

class Program

{

static void Main(string[] args)

{

Triangle t=new Triangle ();

t.a = int.Parse(Console.ReadLine());

t.b = int.Parse(Console.ReadLine());

t.c = int.Parse(Console.ReadLine());

try

{

Console.WriteLine(t.getCircumference());

t.showInfo();

}

catch(Myexception me)

{

Console.WriteLine(me.Message + "异常！");

}

finally 

{

}

}

}
}

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

namespace ConsoleApplication44
{

class Program

{

static void Main(string[] args)

{

int[] a = new int[4];

try

{

for (int i = 0; i < 5; i++)

{

a[i] = int.Parse(Console.ReadLine());

}

}

catch (Exception e1)
///此处Exception 可以具体到子类

{

Console.WriteLine( e1.Message+"异常!");

}

finally { }

}

}
}