字符串

判断

Contains - 判断字符串是否包含另一段字符串

string aa = "1,2,3,44";
string cc = "444";
var a = aa.Split(',').Contains("4"); 
var b = aa.Split(',').Contains("44"); 
var c = cc.Contains("4");
Console.WriteLine("a输出" + a);//false
Console.WriteLine("b输出" + b);//true
Console.WriteLine("c输出" + c); //true