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Error with ComponentModel.ISynchronizeInvoke as parameter

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IlyaRabyy

IlyaRabyy

Programmer
Nov 9, 2010
566
US
Colleagues,
Another problem was encountered:
Program: FileWatcher_C ("C" stands for "Console");
Based on FileSystemWatcher class;
When run (Debug mode) in VS 2022 IDE, throws the following error:

2024-04-26_ArgumentIsMissing_p17nsq.jpg


Here's the starting code:

Code: 
'====================================================================================================================================
Private Sub StartWatch(fileWatcher_C As ComponentModel.ISynchronizeInvoke)
'====================================================================================================================================
fsWatch = New FileSystemWatcher(gsWorkDir)

fsWatch.SynchronizingObject = fileWatcher_C

In the WinForms app, it was the Start Watch button's Private Sub StartWatch_Click(sender As Object, e As EventArgs) Handles StartWatch.Click

In the Console app, the argument "ComponentModel.ISynchronizeInvoke" was entered by the IntelliSence suggestion.

What am I doing wrong?

AHWBGA!

Regards,

Ilya
 
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Firstly, why do you think you need a synchronizing object for FileSystemWatcher?

Secondly, if you DO need it, then you need t pass it as a parameter to StartWatch, but you do not pass any parameter in the ()brief) bit of code you illustrate. Hence the error.
 
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StrongM said:
parameter in the ()brief) bit of code you illustrate
Click to expand...

Not sure what's "()brief)", would you be so kind to clarify, please?

Regards,

Ilya
 
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Your screenshot shows

Code: 
StartWatch()

at line 81

And [tt]()brief)[/tt] should have read [tt](brief)[/tt]
 
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I ran the search for "brief" - not found.

Regards,

Ilya
 
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Ah, no problem!
Here it is:
Code: 
'====================================================================================================================================
Private Sub StartWatch() ' (fileWatcher_C As ComponentModel.ISynchronizeInvoke)
'====================================================================================================================================
fsWatch = New FileSystemWatcher(gsWorkDir)
fsWatch.SynchronizingObject = fileWatcher_C
fsWatch.NotifyFilter = NotifyFilters.CreationTime Or
							  NotifyFilters.DirectoryName Or
							  NotifyFilters.FileName Or
							  NotifyFilters.LastAccess Or
							  NotifyFilters.LastWrite Or
							  NotifyFilters.Security

fsWatch.IncludeSubdirectories = True
fsWatch.Filter = "*.XML"

AddHandler fsWatch.Deleted, AddressOf FileDeleted
AddHandler fsWatch.Changed, AddressOf FileChanged
AddHandler fsWatch.Renamed, AddressOf FileRenamed
AddHandler fsWatch.Created, AddressOf FileCreated

fsWatch.EnableRaisingEvents = True

Dim lsRptLine As String = Replicate("=", 134) + vbCrLf + Format(Now, "yyyy-MM-dd HH:mm") + ": Watch started" + vbCrLf
lsRptLine += Replicate("=", 134) + vbCrLf

My.Computer.FileSystem.WriteAllText(gsLogFile, lsRptLine, True)
End Sub
'====================================================================================================================================


Regards,

Ilya
 
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No, I saw enough of that to be able to diagnose the StartWatch parameter issue.

But it is good that you posted it, as I can see that you are STILL trying to use a SynchronizingObject (and, I would imagine getting a new, different error as a result), so I repeat my very first question: ... why do you think you need a SynchronizingObject for FileSystemWatcher?
 
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