C＃|将元素添加到ArrayList的末尾

AddRange(ICollection)方法用于将ICollection的元素添加到ArrayList的末尾。换句话说，此方法用于将其他集合中的多个元素添加到ArrayList中。在这里，元素被定义为原始或非原始类型。

句法：

public virtual void AddRange (ICollection col);

在这里， col是一个ICollection，其元素应添加到ArrayList的末尾。集合本身不能为null，但可以包含null元素。

例外：

• 如果col的值为null，则此方法将提供ArgumentNullException 。
• 如果ArrayList是只读的，或者ArrayList具有固定大小，则此方法将提供NotSupportedException

下面给出了一些示例，以更好地理解实现：

范例1：

// C# program to illustrate the AddRange() Method
using System;
using System.Collections;
  
class GFG {
  
    // Main method
    public static void Main()
    {
  
        // Creates and initializes a new ArrayList
        ArrayList mylist = new ArrayList();
        mylist.Add("C# ");
        mylist.Add("DSA ");
        mylist.Add("Java ");
        mylist.Add("CPP");
  
        // Creates and initializes a new Queue
        Queue mydata = new Queue();
        mydata.Enqueue("C ");
        mydata.Enqueue("Python ");
        mydata.Enqueue("HTML ");
        mydata.Enqueue("CSS ");
        mydata.Enqueue("JavaScript ");
        mydata.Enqueue("Ruby");
  
        // Displays the ArrayList and the Queue.
        Console.Write("The original ArrayList: ");
        Data(mylist);
          
        Console.Write("The original Queue: ");
        Data(mydata);
  
        // Copies the elements of the queue to the end of the ArrayList.
        mylist.AddRange(mydata);
  
        // Displays the new ArrayList.
        Console.Write("The new ArrayList is: ");
        Data(mylist);
    }
  
    // method to display the ArrayList
    // and Queue elements
    public static void Data(IEnumerable mylis)
    {
        foreach(string str in mylis)
            Console.Write("{0}", str);
        Console.WriteLine();
    }
}

输出：

The original ArrayList: C# DSA Java CPP
The original Queue: C Python HTML CSS JavaScript Ruby
The new ArrayList is: C# DSA Java CPPC Python HTML CSS JavaScript Ruby

范例2：

// C# program to illustrate 
// the AddRange() Method
using System;
using System.Collections;
  
public class GFG {
  
    // Main method
    public static void Main()
    {
  
        // Creates and initializes a new ArrayList.
        ArrayList mylist = new ArrayList();
        mylist.Add(5);
        mylist.Add(10);
        mylist.Add(15);
        mylist.Add(20);
        mylist.Add(25);
  
        // Creates and initializes a new ArrayList.
        ArrayList mydata = new ArrayList();
        mydata.Add(30);
        mydata.Add(35);
        mydata.Add(40);
        mydata.Add(45);
        mydata.Add(50);
  
        // Displays both ArrayList.
        Console.WriteLine("The ArrayList 1: ");
        foreach(int i in mylist)
        {
            Console.WriteLine(i);
        }
        Console.WriteLine("The ArrayList 2: ");
        foreach(int j in mydata)
        {
            Console.WriteLine(j);
        }
  
        // Copies the elements of the mydata
        // to the end of the mylist
        mylist.AddRange(mydata);
  
        // Displays the new ArrayList.
        Console.WriteLine("The new ArrayList is :");
        for (int k = 0; k < mylist.Count; k++)
            Console.WriteLine(mylist[k]);
    }
}

输出：

The ArrayList 1: 
5
10
15
20
25
The ArrayList 2: 
30
35
40
45
50
The new ArrayList is :
5
10
15
20
25
30
35
40
45
50

参考：

• https://docs.microsoft.com/zh-cn/dotnet/api/system.collections.arraylist.addrange?view=netframework-4.7.2#System_Collections_ArrayList_AddRange_System_Collections_ICollection_