经典ASP测试，如果服务器可以创建对象

Question

使用此代码：

Dim xmlDOM
Set xmlDOM = Server.CreateObject("MSXML2.DOMDocument.3.0")    

如何测试CreateObject函数是否成功？

Answer 1

如果它不起作用，您可能会收到错误消息。否则，您可以使用以下代码：

Dim xmlDOM
'dont fail on error'
On Error Resume Next
Set xmlDOM = Server.CreateObject("MSXML2.DOMDocument.3.0")
On Error GoTo 0 'turn error handling off again'

If Not xmlDOM Is Nothing Then
   'not null: it worked'
Else
   'xmlDOM is nothing.  It was not able to create the object. ' 
   'Check create permissions in COM+'
End If