WMI HELP

[ICTECH]

Hi All..

I'm trying to debug an application that ustilizes WMI on a server to get the Printer status. Its works great until the printer is paused then it blows up.. The error is in

If cTmp = "Other" then
tbPrinterError.Text = System.Enum.GetName(GetType(WMI_ExtendedDetectedErrorState), _mo.GetPropertyValue("ExtendedDetectedErrorState"))
Else

It generates "An unhandled exception of typw 'SYstem.Management.ManagemntException' occured in system.management.dll Additional Information: Not Found"

HELP.. Thanks...

 

[tEkHEd]

I would put your syntax in a try catch statement and handle your error that way..

    If cTmp = "Other" Then
        Try
            tbPrinterError.Text = System.Enum.GetName(GetType(WMI_ExtendedDetectedErrorState), _mo.GetPropertyValue("ExtendedDetectedErrorState"))
        Catch nullRef As NullReferenceException
            'Handle the error here
        End Try
    Else
        'do something else
    End If

 

[ICTECH]

Hi tEkHEd...

The code is supposted to take the error message and pull up the extended information as to what the error is.. I have a list of Error codes... As follows... But for some reason its not pulling fro this list and I'm at a bit of a loss... Hmmm... It seems to work for all the other Status lookups.. Any ideas?

Public Enum WMI_ExtendedDetectedErrorState As Integer
Unknown = 0
Other = 1
NoError = 2
LowPaper = 3
NoPaper = 4
LowToner = 5
NoToner = 6
DoorOpen = 7
Jam = 8
ServiceRequested = 9
OutputBinFull = 10
PaperProblem = 11
CannotPrintPage = 12
UserInterventionRequired = 13
OutOfMemory = 14
ServerUnknown = 15
End Enum

 

[tEkHEd]

Try this...

Dim s as string
dim WMIErr as type = GetType(WMI_ExtendedDetectedErrorState)

for each s in [Enum].GetNames(WMI_ExtendedDetectedErrorState)
    console.writeline(s.ToString)
next

this will enumerate the errorstate types in your enum class.