insert方法 c#
C#List <T> .Insert()方法 (C# List<T>.Insert() Method)
List<T>.Insert() method is used to insert an element at specified index in the list.
List <T> .Insert()方法用于在列表中的指定索引处插入元素。
Syntax:
句法:
void List<T>.Insert(int index, T item);
Parameter: It accepts two parameters 1) index – where you want to insert the element and 2) item – to insert in the list.
参数:它接受两个参数:1) 索引 –您要在其中插入元素的位置;和2) 项目 –要在列表中插入的参数。
Return value: It returns nothing – it’s return type is void.
返回值:不返回任何内容–返回类型为void 。
Example:
例:
int list declaration:
List<int> a = new List<int>();
adding elements:
a.Add(10);
a.Add(20);
a.Add(30);
a.Add(40);
a.Add(50);
//inserting elements at specified indexes
a.Insert(1, 100);
a.Insert(3, 200);
a.Insert(4, 300);
Output:
10 100 20 200 300 30 40 50
C#示例使用List <T> .Insert()方法在列表中的指定索引处插入元素的示例 (C# Example to insert an element at specified index in the list using List<T>.Insert() Method)
using System;
using System.Text;
using System.Collections.Generic;
namespace Test
{
class Program
{
static void printList(List<int> lst)
{
//printing elements
foreach (int item in lst)
{
Console.Write(item + " ");
}
Console.WriteLine();
}
static void Main(string[] args)
{
//integer list
List<int> a = new List<int>();
//adding elements
a.Add(10);
a.Add(20);
a.Add(30);
a.Add(40);
a.Add(50);
//print the list
Console.WriteLine("list elements...");
printList(a);
//inserting elements at specified indexes
a.Insert(1, 100);
a.Insert(3, 200);
a.Insert(4, 300);
//list after inserting elements
Console.WriteLine("list elements after inserting elements...");
printList(a);
//hit ENTER to exit
Console.ReadLine();
}
}
}
Output
输出量
list elements...
10 20 30 40 50
list elements after inserting elements...
10 100 20 200 300 30 40 50
Reference: List<T>.Insert(Int32, T) Method
参考: List <T> .Insert(Int32,T)方法
翻译自: https://www.includehelp.com/dot-net/list-t-insert-method-with-example-in-c-sharp.aspx
insert方法 c#