[{"createTime":1735734952000,"id":1,"img":"hwy_ms_500_252.jpeg","link":"https://activity.huaweicloud.com/cps.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=V1g3MDY4NTY=&utm_medium=cps&utm_campaign=201905","name":"华为云秒杀","status":9,"txt":"华为云38元秒杀","type":1,"updateTime":1735747411000,"userId":3},{"createTime":1736173885000,"id":2,"img":"txy_480_300.png","link":"https://cloud.tencent.com/act/cps/redirect?redirect=1077&cps_key=edb15096bfff75effaaa8c8bb66138bd&from=console","name":"腾讯云秒杀","status":9,"txt":"腾讯云限量秒杀","type":1,"updateTime":1736173885000,"userId":3},{"createTime":1736177492000,"id":3,"img":"aly_251_140.png","link":"https://www.aliyun.com/minisite/goods?userCode=pwp8kmv3","memo":"","name":"阿里云","status":9,"txt":"阿里云2折起","type":1,"updateTime":1736177492000,"userId":3},{"createTime":1735660800000,"id":4,"img":"vultr_560_300.png","link":"https://www.vultr.com/?ref=9603742-8H","name":"Vultr","status":9,"txt":"Vultr送$100","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":5,"img":"jdy_663_320.jpg","link":"https://3.cn/2ay1-e5t","name":"京东云","status":9,"txt":"京东云特惠专区","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":6,"img":"new_ads.png","link":"https://www.iodraw.com/ads","name":"发布广告","status":9,"txt":"发布广告","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":7,"img":"yun_910_50.png","link":"https://activity.huaweicloud.com/discount_area_v5/index.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=aXhpYW95YW5nOA===&utm_medium=cps&utm_campaign=201905","name":"底部","status":9,"txt":"高性能云服务器2折起","type":2,"updateTime":1735660800000,"userId":3}]
该程序是在控制台程序中测试 ，下面分别介绍两种方法，代码如下：
using System; namespace ConsoleApp17 { class Program { static void
Main(string[] args) { //double ➡ int //A方法: Convert.Toint32(double) ➡ int :四舍五入
【特殊①】 //B方法: (int)double ➡ 去除小数 double a = 3.4; double c = 3.6;
Console.WriteLine( Convert.ToInt32(a) +"\n"+ Convert.ToInt32(c) +"\n"+ (int)a
+"\n"+ (int)c +"\n" ); //【①】如果小数位于两个整数的正中间，则得到的整数为偶数，不为奇数 double b = 3.5;
double bb = 4.5; Console.WriteLine( Convert.ToInt32(b) + "\n" +
Convert.ToInt32(bb) + "\n" ); //如果参数为Null,A方法对应0，B方法报错 Console.WriteLine(
Convert.ToInt32(null) +"\n" //+ (int)null 报错 ); //String ➡ int //A方法：int
int.parse(String s); s格式如果不对，会报错 //B方法: bool int.Tryparse(String s ,out int a);
如果异常，a=0,并且返回false String rightString = "2018"; String errorString = "liuyan";
Console.WriteLine( int.Parse(rightString) ); //int.Parse(errorString); 报错 int
result3, result4; int.TryParse(rightString,out result3);
int.TryParse(errorString,out result4); Console.WriteLine(result3+"\n"+result4);
Console.Read(); } } }
打印如下:
