RadAjaxManager & System.IO.FileInfo

[Jerry Jansen]

I have a webform in asp.net 3.5 and VB and uses RadAjaxManager for updating the 

datatable/grid. Also uses impersonate in web.config.

I have a routine that loads a flat file into a datatable and checks 

for the existance of a notes file on our fileserver and then updates 

a datatable and grid if that file exists. Everything works fine when 

the page first loads and my routine (shown below) checks and finds 

the existance of the files and updates the datatable/grid correctly.

I also have a timer on the webform that checks the flat file for any 

changes. If the flat file is changed then it updates the datatable and 

checks for the existance of the notes files again by running the same 

routine that it runs when the page first loads. However, this time it 

does not find any files. The files are still there and the datatable/grid 

gets  updated correctly with any changes from the flat file. It is just 

that System.IO.FileInfo and Exists always returns false every time

after the first time the routine is run during the page load event.

The note files are still available when the timer executes the routine 

using AJAX but returns false. I can do a full refresh of the page and

the note files show up again.

...

Dim notesfile as String
notesfile = "\\hs_file\ROOT\SYS\HOME\" & username & "\NOTES\" & MeasureYears & "\" & sMeasureValue & ".doc"
Dim filenotes As New System.IO.FileInfo(notesfile)
If filenotes.Exists() Then
	row("NotesFileName") = notesfile
	row("Notes") = "Your Notes"
Else
	row("Notes") = Nothing
	row("NotesFileName") = Nothing
End If
...

Any help will be greatly appreciated. Thanks.

Jerry
 

[Yavor]

Hi Jerry,

Based on the provided information, it is very hard to pinpoint the cause of the problem. If the issue persists, you can open a formal support ticket, and send us a small working project, demonstrating the logic of your setup.
We will review it locally, and get back to you with additional information.

All the best,
Yavor
the Telerik team

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