Create Page Scope Object in WinCE ASP
I have to create a page scope COM object in ASP for WIN CE device. The Win CE device supports only httpd server.
I tried to create the com object with the statement Server.CreateObject
to give it page sco开发者_JAVA百科pe. But I am getting the following error
Parse error in script
Microsoft VBScript runtime error: '800a01b6'
Description: Object doesn't support this property or method: 'Server.CreateObject'
In file: /Polycold_WebGUI/PolyCold_system_home.asp
On line: 13
How can I correct this problems?
Can I give Page Scope for COM object in Win CE ASP?Result
The method GetUnitModelNumber
increments a member variable and returns the result. Initially the value is 0. Each time GetUnitModelNumber is executed the value will increment. As the default object life time is page scope, My expectation is that the second CreateObject call will return the object already created and the value will increment. But I am getting 0 when I executed the following piece of code. What is wrong with the following code?
Dim objAd1,man
Set objAd1 = CreateObject("PolyColdDeviceCmds.SystemCmds")
man1 = objAd1.GetUnitModelNumber()
Set objAd1 = CreateObject("PolyColdDeviceCmds.SystemCmds")
man2 = objAd1.GetUnitModelNumber()
Response.Write(man2)
Response.Write("<script language='javascript'> alert("""&man2&""");</script>")
How can I correct these problems?
As I mentioned here, you cannot use Server.CreateObject
in asp-WinCE, you should use just CreateObject
instead. Only MapPath
and URLEncode
are supported by the Server object in asp-WinCE. See this page in MSDN for details. From this page:
The Server object provides access to methods and properties on the server. Most of these methods and properties serve as utility functions. The following table shows the supported server methods.
Server method - Windows CE implementation
ScriptTimeout: Not supported.
CreateObject: Not supported.
Execute: Not supported.
GetLastError: Not supported.
HTMLEncode: Not supported.
MapPath: Fully supported.
Transfer: Not supported.
URLEncode: Fully supported.
Can I give Page Scope for COM object in Win CE ASP?
Page Scope is the default behaviour for any COM object created within an asp page. See this MSDN reference for details. From this page:
An object that you create by using Server.CreateObject or the HTML tag on an ASP page exists for the duration of that page.
This page talks about classic asp in Windows (desktop), not Windows CE. So for Windows CE just replace Server.CreateObject
by CreateObject
and you should get the same results.
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