thanks, I already know this trick.
Isn't there an option which is supported by VB language?
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how to "cache bust" using XMLHTTPRequest
Hi,
I need my HTTP request to always be loaded from the web , and never be taken from the browser's cache.
How do I do it? is there some kind of parameter to the XMLHTTPRequest.Open command?
thanks,
Nimrodon.
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Answers
Not too sure, you may try call the DeleteUrlCacheEntry API just before you call the xmlhttp object, to see if it remove the cache or not...
http://www.allapi.net/apil
try something like:
Private Declare Function DeleteUrlCacheEntry Lib "wininet.dll" Alias "DeleteUrlCacheEntryA" (ByVal lpszUrlName As String) As Long
Private Sub Form_Load()
URL = "http://yourdomain.com/you
DeleteUrlCacheEntry URL
Dim xmlHttp As MSXML.XMLHTTPRequest
Set xmlHttp = New MSXML.XMLHTTPRequest
xmlHttp.Open "GET", URL, False
xmlHttp.Send
MsgBox xmlHttp.Status
Debug.Print xmlHttp.responseText
Set xmlHttp = Nothing
End Sub
see if this works?
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by: ryancysPosted on 2006-10-05 at 09:21:13ID: 17670011
You may try add some "dummy parameter at the end of your url, so that we can ensure the response is always not loaded from cache. like:
Private Sub Form_Load()
Randomize
rndkey = Int(Rnd * 100000")
Dim xmlHttp As MSXML.XMLHTTPRequest
Set xmlHttp = New MSXML.XMLHTTPRequest
URL = "http://yourdomain.com/you
xmlHttp.Open "GET", URL & "?rndkey=" & rndkey, False
xmlHttp.Send
MsgBox xmlHttp.Status
Debug.Print xmlHttp.responseText
Set xmlHttp = Nothing
End Sub
hope this helps