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Message
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| PeterPotkay |
 Posted: Thu Apr 06, 2006 10:11 am Post subject: VB.NET MQ 6.0 Hashtables broken? |
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Poobah
Joined: 15 May 2001
Posts: 7722
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Windows XP SP2
MQ 6.0.1.0
.Net Framwork 1.1.4322
Both amqmdnet.dll and amqmdxcs.dll are registered.
This code used to work just fine up to MQ 5.3.0.12:
| Code: |
Dim myHashTable As New Hashtable
myHashTable.Add(IBM.WMQ.MQC.CHANNEL_PROPERTY, ComboBoxClientChannel.Text)
myHashTable.Add(IBM.WMQ.MQC.HOST_NAME_PROPERTY, ComboBoxHostname.Text)
myHashTable.Add(IBM.WMQ.MQC.PORT_PROPERTY, ComboBoxPortNumber.Text)
'************************************************
' Connect to the QM
'***********************************************
myQM = New MQQueueManager(ComboBoxQMName.Text, myHashTable)
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Since I upgraded to 6.0.1.0, the above code throws the following error when I step into the New MQQueueManager method:
| Quote: |
An unhandled exception of type 'System.InvalidCastException' occurred in amqmdnet.dll
Additional information: Specified cast is not valid.
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If I change the code and use the constructor which specifies the QM Name, Channel Name and Host seperatly like below, it works:
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myQM = New MQQueueManager(qmNamet, channelName, hostName)
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Any ideas why the hashtable way is bombing in 6.0.1.0 when it used to work in 5.3.0.12?
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Peter Potkay
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| mvic |
| Posted: Thu Apr 06, 2006 10:22 am Post subject: Re: VB.NET MQ 6.0 Hashtables broken? |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| PeterPotkay wrote: |
| Any ideas why the hashtable way is bombing in 6.0.1.0 when it used to work in 5.3.0.12? |
At first sight, this is a strong case to present to Support. |
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| jefflowrey |
| Posted: Thu Apr 06, 2006 10:45 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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My first thought is that the .NET environment changed what "Hashtable" is, or the MQ .NET API changed what it uses for MQEnvironment to be something other than a Hashtable.
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| PeterPotkay |
| Posted: Thu Apr 06, 2006 11:15 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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The tooltip says it needs SYSTEM.COLLECTIONS.HASHTABLE. And the debugger window does show the hashtable being built.
Fo ha-has, I changed:
| Code: |
Dim myHashTable As New Hashtable
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to
| Code: |
Dim myHashTable As New System.Collections.Hashtable
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Same results. Opening a PMR....will post the results
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Peter Potkay
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| PeterPotkay |
| Posted: Thu Apr 06, 2006 11:30 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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aha, figured it out (5 minutes after the PMR was sent)
I changed this:
| Code: |
'myHashTable.Add(IBM.WMQ.MQC.PORT_PROPERTY, ComboBoxPortNumber.Text)
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to this:
| Code: |
Dim portnum As Integer
portnum = 1414
myHashTable.Add(IBM.WMQ.MQC.PORT_PROPERTY, portnum)
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Apparently 6.0.1.0 needs an Integer for the port number, whereas 5.3.0.12 took text.
Time to go bang my head against the monitor and figure out how to convert the GUI's textbox for the port from text to an int. (I'm not a VB guy)
-Peter
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Peter Potkay
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| sebastianhirt |
| Posted: Thu Apr 06, 2006 11:40 am Post subject: |
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Yatiri
Joined: 07 Jun 2004
Posts: 620
Location: Germany
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| PeterPotkay |
| Posted: Fri Apr 07, 2006 10:37 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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Huh. For once it was easy and intuitive. This works:
| Code: |
Dim portNumber As Integer
portNumber = ComboBoxPortNumber.Text
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ComboBoxPortNumber is a ComboBox with a pull down menu with port #s to choose from. Free form data entry is not allowed, so the value of ComboBoxPortNumber.Text will always be a number.
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Peter Potkay
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| mvic |
| Posted: Fri Apr 07, 2006 10:45 am Post subject: |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| PeterPotkay wrote: |
| portNumber = ComboBoxPortNumber.Text |
Huh indeed. This is number=text. Not at all intuitive  |
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| jefflowrey |
| Posted: Fri Apr 07, 2006 10:56 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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Without using the pulldown, you should be able to do stuff with VB to convert a text to a number.
Try just setting an Integer = the value of the free form Text box.
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| PeterPotkay |
| Posted: Fri Apr 07, 2006 10:58 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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But then they can add a port numbner of ABCD. I wasn't able to find a way to restrict the entry to numbers only.
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Peter Potkay
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| fjb_saper |
| Posted: Fri Apr 07, 2006 11:08 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| PeterPotkay wrote: |
| But then they can add a port numbner of ABCD. I wasn't able to find a way to restrict the entry to numbers only. |
Have you tryed the stringfunction co (contains only) mystring.co("0123456789"). Should be there somewhere just don't ask me about the M$ implementation... 
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| jefflowrey |
| Posted: Fri Apr 07, 2006 11:09 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| PeterPotkay wrote: |
| But then they can add a port numbner of ABCD. I wasn't able to find a way to restrict the entry to numbers only. |
Yeah, but the program will throw an error trying to do the conversion. And you can catch that error, and tell them to try again, or let the error turn into a pop-up window.
But if you're happy providing a pop-up that covers all values from 0 to 65535 (the range of allowabled TCP/IP port numbers) then more power to you.
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| PeterPotkay |
| Posted: Fri Apr 07, 2006 11:32 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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I just listed all the port #s we have in use here for MQ. Its a little tool for my team to use. Obviously if it was a "real" app, I would take the time to do it right, if I was a "real" programmer. 
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Peter Potkay
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| PeterPotkay |
| Posted: Wed Apr 12, 2006 5:48 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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Update from my PMR. Huh again. Sounds like they will allow a string to be passed in for the port number.
| Code: |
IBM Update Apr 7, 2006 1:26:00 PM UTC
Action Taken: Received the following email from customer.
.
Tameka,
I figured out the problem. In 5.3, amqmdnet.dll would accept a text
string for the port # when passed inside a hashtable. But in the 6.0
version, it became more restrictive, and required the port number to be
of the type Integer. Once a passed the port number variable as an
Integer, it worked.
.
Is this (I guess logical) restriction by design in 6.0? Or
unintentional? Does IBM still want amqmdnet.dll to accept the port # as
a text string in 6.0 like it did in 5.3, and so we have a bug? Or was
the bug in 5.3 in that it accepted a text string in 5.3?
.
-Peter
IBM Update Apr 11, 2006 11:48:00 AM UTC
Hello,
.
The issue reported by the customer has already been identified as an MQ
Problem and it is being handled through an internal defect(101016). The
development team is working on this and the fix is tentatively scheduled
to be available in the next fix pack.
.
This information is documented in PRB #2927.
.
Thanks and Regards,
Praveen
MQL3CR MQAPR06PI
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Peter Potkay
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| Leigh Kendall |
| Posted: Wed Apr 12, 2006 10:57 am Post subject: |
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Acolyte
Joined: 10 Apr 2003
Posts: 66
Location: Hartford, CT
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Peter -
Check whether you have Option Strict on or off. In any event, you may want to cast the .text value to an int using either System.ConvertToInt32 of VB's CInt function.
HTH,
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Leigh Kendall |
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