Hi.
I'm using WMI to get remote processes on computers.
No, I can't use process class, search yesterday posts if you have questions.
So What I do is create the management class and then get the collection.
Something like this:
The 2nd implementation is like so:
Now, this seems to work both ways , haven't tested in extend but it gets the collection.
My questions are:
1)Is this correct? And if so, which is better? I'm putting the ManagementClass and all the options and creds in a a using and then I get the results also outside the using. I do that because this will run with a timer every x seconds,
so it does not seem logical to get the ManagementClass again and again. I was not sure if it will work as the loop runs outside the using but seems to work, so is that correct?
2)Does anyone know how long this will keep working? Is there a time limit? I use Timespan.Maxvalue on ObjectGetOptions but i don't know if that is the way to go as I can't understand what the MSDN documentation is saying for ObjectGetOptions timeout
I'm using WMI to get remote processes on computers.
No, I can't use process class, search yesterday posts if you have questions.
So What I do is create the management class and then get the collection.
Something like this:
Code:
Dim queryCollection1 As ManagementObjectCollection
Dim searcher1 As ManagementObjectSearcher
Dim propt As ObjectGetOptions
propt = New ObjectGetOptions(Nothing, TimeSpan.MaxValue, True)
Using manClass As New ManagementClass("\\testserver\root\cimv2", "Win32_PerfFormattedData_PerfProc_Process", propt)
manClass.Scope.Options.EnablePrivileges = True
manClass.Scope.Options.Impersonation = ImpersonationLevel.Impersonate
manClass.Scope.Options.Username = "user"
manClass.Scope.Options.Password = "pass"
manClass.Scope.Options.Authority = "ntlmdomain:mydomain"
Dim query As ObjectQuery
query = New ObjectQuery(
"SELECT * FROM Win32_PerfFormattedData_PerfProc_Process")
searcher1 = New ManagementObjectSearcher(manClass.Scope, query)
queryCollection1 = searcher1.Get()
End Using
' Testing for values...
For xx = 0 To 6 Step +1
queryCollection1 = searcher1.Get()
Next
queryCollection1.Dispose()
searcher1.Dispose()Code:
Dim queryCollection1 As ManagementObjectCollection
Dim searcher1 As New ManagementObjectSearcher
Dim propt As ObjectGetOptions
propt = New ObjectGetOptions(Nothing, TimeSpan.MaxValue, True)
Dim scopper1 As New ManagementScope
Dim query1 As New ObjectQuery
Using manClass As New ManagementClass("\\testserver\root\cimv2", "Win32_PerfFormattedData_PerfProc_Process", propt)
manClass.Scope.Options.EnablePrivileges = True
manClass.Scope.Options.Impersonation = ImpersonationLevel.Impersonate
manClass.Scope.Options.Username = "user"
manClass.Scope.Options.Password = "pass"
manClass.Scope.Options.Authority = "ntlmdomain:mydomain"
scopper1 = manClass.Scope.Clone()
End Using
query1.QueryString = "SELECT * FROM Win32_PerfFormattedData_PerfProc_Process"
searcher1.Scope = scopper1
searcher1.Query = query1
For xx = 0 To 6 Step +1
'' in or out of the loop? probably out
' searcher1.Scope = scopper1
' searcher1.Query = query1
queryCollection1 = searcher1.Get()
Next
queryCollection1.Dispose()
searcher1.Dispose()My questions are:
1)Is this correct? And if so, which is better? I'm putting the ManagementClass and all the options and creds in a a using and then I get the results also outside the using. I do that because this will run with a timer every x seconds,
so it does not seem logical to get the ManagementClass again and again. I was not sure if it will work as the loop runs outside the using but seems to work, so is that correct?
2)Does anyone know how long this will keep working? Is there a time limit? I use Timespan.Maxvalue on ObjectGetOptions but i don't know if that is the way to go as I can't understand what the MSDN documentation is saying for ObjectGetOptions timeout