2 replies to this topic

[steevan16]

Just a quick question about msi property.

Say I have a property defined in the property table by name IPADDRESS with default value as 1.1.1.1.

I install the app with the above property IPADDRESS=2.2.2.2. So obviously 1.1.1.1 will be replaced by 2.2.2.2.

Say this value is put under one registry key or INI file somewhere.

Now if I repair the msi through control panel (forcibly), what will be the value ? whether it is 2.2.2.2 (which I except to be there) or original 1.1.1.1 ?

I would have thought it takes 2.2.2.2 but in reality it doesn't. Because the temp msi under winnt\installer also has the default value 1.1.1.1 in the property table instead of 2.2.2.2.

Any idea how to handle this ?

[KathyMorey]

you might consider having AppSearch look for the registry key or ini file entry where the address is stored, and then having a custom action set the IPADDRESS property if the entry is found.

[mandy]

Yes, that's right - you have to store/retrieve the values yourself.

Here's a VBScript I wrote to help solve this:

On Error Resume Next
Dim oWsh, sLastValue, sCurrentValue

'Modify the following two constants As required
Const sPROPERTYNAME = "MYAPP_IPADDRESS"
Const sDEFAULTVALUE = "1.1.1.1"

Const sPROPERTYREGLOC = "HKLM\Software\MyCompany\Public Properties\"

Set oWsh = CreateObject("WScript.Shell")

sLastValue = oWsh.Regread(sPROPERTYREGLOC & sPROPERTYNAME)

sCurrentValue = Me.Property(sPROPERTYNAME)

If sCurrentValue = "" Then

If sLastValue = "" Then

oWsh.RegWrite sPROPERTYREGLOC & sPROPERTYNAME, sDEFAULTVALUE, "REG_SZ"

Me.Property(sPROPERTYNAME) = sDEFAULTVALUE

Else

Me.Property(sPROPERTYNAME) = sLastValue

End If



Else

oWsh.RegWrite sPROPERTYREGLOC & sPROPERTYNAME, sCurrentValue, "REG_SZ"

End If

Set oWsh = Nothing

I simply embed this script just before "installinitialize" (non-deferred).

Edited by mandy, 09 August 2005 - 15:41.