using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace 测试控制台
{
public class 移除元素
{
public void c()
{
string bu = "8177,-1,289327,289328,289329,289330,289331,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1";
//移除某个元素 方法一
string[] arrkey = bu.Split(',');
string tmp = string.Empty;
for (int i = 0; i < arrkey.Length; i++)
{
if (arrkey[i] != "-1")
{
tmp += arrkey[i] + ",";
}
}
tmp = tmp.TrimEnd(',');//8177,289327,289328,289329,289330,289331
//移除某个元素 方法二 linq表达式
List<string> la = bu.Split(',').ToList();
var newArr2 = from i in la where i != "-1" select i;
tmp = string.Join(",", newArr2);//8177,289327,289328,289329,289330,289331
//移除某个元素 方法三 委托
List<string> la2 = bu.Split(',').ToList();
la2.RemoveAll(n => n == "-1");
tmp = string.Join(",", la2);//8177,289327,289328,289329,289330,289331
//总结
// Predicate<T>委托
//方法:RemoveAll(Predicate<T> match);//参数是泛型委托
//用法:la2.RemoveAll(n => bool表达式)
}
}
}
c#后台移除某个元素方法总结
最新推荐文章于 2025-01-28 21:25:35 发布