首先定义一类class User();然后在一个ArraryList中放入多个User对象;现在在建一个User数组,把ArraryList中的元素转移到User数组中!!
ArraryList aList=new ArraryList();
for(){
aList.add();
}User[] u=aList.ToArrary() as User[]; //这样是错误的!!,正确该这样写!!
ArraryList aList=new ArraryList();
for(){
aList.add();
}User[] u=aList.ToArrary() as User[]; //这样是错误的!!,正确该这样写!!
using System.Collections;public class MyClass
{
public static void Main()
{
ArrayList tempAL = new ArrayList();
A a1 = new A();
a1.S = "1";
tempAL.Add(a1);
A a2 = new A();
a2.S = "2";
tempAL.Add(a2);
A[] a = new A[tempAL.Count];
tempAL.CopyTo(a);
for( int i = 0;i < a.Length;i++)
{
Console.WriteLine(a[i].S);
}
Console.ReadLine();
}
public struct A
{
public String S;
}
}
stream s=new stream();
byte b[]=s.ToArray(); //这是正确的!!ArraryList aList=new ArraryList();
for(){
aList.add();
}User[] u=aList.ToArrary();//这样是错误的!!,对比一下,,为什么???