小弟刚学C#，有很多问题想向各位大虾请教，请大家多多帮忙啊

请问一下：
ArrayList 是C#的关键字吗？
它是什么意思？
怎么用啊？

是的，他代表的是一个数组

具体用法查看一下Microsoft .NET Framework SDK中的文档，他属于System.Collections命名空间

谢过楼上的!

晕晕的。。。它不是关键字

AddHandler	AddressOf	Alias	And	Ansi
As	Assembly	Auto	Base	Boolean
ByRef	Byte	ByVal	Call	Case
Catch	CBool	CByte	CChar	CDate
CDec	CDbl	Char	CInt	Class
CLng	CObj	Const	CShort	CSng
CStr	CType	Date	Decimal	Declare
Default	Delegate	Dim	Do	Double
Each	Else	ElseIf	End	Enum
Erase	Error	Event	Exit	ExternalSource
False	Finalize	Finally	Float	For
Friend	Function	Get	GetType	Goto
Handles	If	Implements	Imports	In
Inherits	Integer	Interface	Is	Let
Lib	Like	Long	Loop	Me
Mod	Module	MustInherit	MustOverride	MyBase
MyClass	Namespace	New	Next	Not
Nothing	NotInheritable	NotOverridable	Object	On
Option	Optional	Or	Overloads	Overridable
Overrides	ParamArray	Preserve	Private	Property
Protected	Public	RaiseEvent	ReadOnly	ReDim
Region	REM	RemoveHandler	Resume	Return
Select	Set	Shadows	Shared	Short
Single	Static	Step	Stop	String
Structure	Sub	SyncLock	Then	Throw
To	True	Try	TypeOf	Unicode
Until	volatile	When	While	With
WithEvents	WriteOnly	Xor	eval	extends
instanceof	package	var

其中有一部分大写的也可以小写

abstract	event	new	struct
as	explicit	null	switch
base	extern	object	this
bool	false	operator	throw
break	finally	out	true
byte	fixed	override	try
case	float	params	typeof
catch	for	private	uint
char	foreach	protected	ulong
checked	goto	public	unchecked
class	if	readonly	unsafe
const	implicit	ref	ushort
continue	in	return	using
decimal	int	sbyte	virtual
default	interface	sealed	volatile
delegate	internal	short	void
do	is	sizeof	while
double	lock	stackalloc
else	long	static
enum	namespace	string

以上C#中的关键字 ArrayList代表的是一个数组 具体用法请查看一下Microsoft .NET Framework SDK中的文档.

多谢
小弟又学了不少东西