判断dll文件是否已经注册的ASP函数代码

<% 
'功能:检查是否存在系统组件或组件是否安装成功 
'参数:组件名 
Function IsObjInstalled(strClassString) 
On Error Resume Next 
IsObjInstalled = False 
Err = 0 
Dim xTestObj 
Set xTestObj = Server.CreateObject(strClassString) 
If 0 = Err Then IsObjInstalled = True 
Set xTestObj = Nothing 
Err = 0 
End Function 
'获取系统组件的版本号 
Function getver(Classstr) 
On Error Resume Next 
getver="" 
Err = 0 
Dim xTestObj 
Set xTestObj = Server.CreateObject(Classstr) 
If 0 = Err Then getver=xtestobj.version 
Set xTestObj = Nothing 
Err = 0 
End Function 
%>

<% 
if IsObjInstalled("fso.file") =True then 
response.write("已经安装")&getver("fso.file") 
end if 
%>