ArrayList.AddRange(ICollection)方法用于将ICollection的元素添加到数组列表.
语法如下：
public virtual void AddRange (System.Collections.ICollection c);
这里, C是ICollection, 其元素应添加到ArrayList的末尾。集合本身不能是null, 但可以包含以下元素null.
例外情况：
- ArgumentException：IfC一片空白
- NotSupportedException：如果ArrayList为只读或ArrayList具有固定大小。
示例1：
//C# code to add the elements of an
//ICollection to the end of the ArrayList
using System;
using System.Collections;
class GFG {//Driver code
public static void Main()
{//Creating an ArrayList
ArrayList myList = new ArrayList();
//Adding elements to ArrayList
myList.Add( "A" );
myList.Add( "B" );
myList.Add( "C" );
myList.Add( "D" );
myList.Add( "E" );
myList.Add( "F" );
Console.WriteLine( "Before AddRange Method" );
Console.WriteLine();
//displaying the item of myList
foreach (String str in myList)
{
Console.WriteLine(str);
}Console.WriteLine( "\nAfter AddRange Method\n" );
//Here we are using AddRange method
//Which adds the elements of myList
//Collection in myList again i.e.
//we have copied the whole myList
//in it
myList.AddRange(myList);
//displaying the item of List
foreach (String str in myList)
{
Console.WriteLine(str);
}
}
}【C#将元素添加到ArrayList的末尾】输出如下：
Before AddRange MethodABCDEFAfter AddRange MethodABCDEFABCDEF示例2：
//C# code to add the elements of an
//ICollection to the end of the ArrayList
using System;
using System.Collections;
class GFG {//Driver code
public static void Main()
{//Creating an ArrayList
ArrayList myList = new ArrayList();
//adding elements in myList
myList.Add( "Geeks" );
myList.Add( "GFG" );
myList.Add( "C#" );
myList.Add( "Tutorials" );
Console.WriteLine( "Before AddRange Method" );
Console.WriteLine();
//displaying the item of myList
foreach (String str in myList)
{
Console.WriteLine(str);
}Console.WriteLine( "\nAfter AddRange Method\n" );
//taking array of String
string [] str_add = { "Collections" , "Generic" , "List" };
//here we are adding the elements
//of the str_add to the end of
//the myList
myList.AddRange(str_add);
//displaying the item of List
foreach (String str in myList)
{
Console.WriteLine(str);
}
}
}输出如下：
Before AddRange MethodGeeksGFGC#TutorialsAfter AddRange MethodGeeksGFGC#TutorialsCollectionsGenericList注意：
- ArrayList接受null作为有效值, 并允许重复的元素。
- ICollection中元素的顺序保留在ArrayList中。
- https://docs.microsoft.com/en-us/dotnet/api/system.collections.arraylist.addrange?view=netframework-4.7.2
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