Help with quitting Excel with activex (save-dialog)
Hello.
I have following question.
I have a VI that writes data from measurement devices into an excel file. Afterwards I want to change the order of the entries with the help of activex.
All that works fine, but when I quit excel the save-dialolg always pops up. I searched this board for possible solutions and experimented quite a bit but I still get one dialog at the end.
Well, now at least it is only one and not multiple ones. The loop in my the implementation for the data manipulation might be the cause, but if it is it, i don't know why or how to solve it. But maybe it is something different. Anyway, I cannot find the reason.
Some help would be really appreciated .
Thank you very much in advance.
Regards
CD
Solved!
Go to Solution.
Attachments:
labview excel.JPG 136 KB
OK. In the attachment is a picture of the modifications.
Now I have to two problems.
First, after running it in highlight modus, I now know the dialog pops up at the _Workbook.close invoke node. Despite setting true to SaveChanges.
Second, I now get an error code -2147352565 - unknown error at invalid index. and nothing gets saved.
Attachments:
labview excel changesI.JPG 79 KB
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How to save then quit excel using activeX
The task that I need to do is open existing excel file, append data to the last row, save data then close it. Everything works fine except saving the data. I used property workbook note to save then invoke node to close a workbook then invoke node to quit excel application. I watched and see that the data is written to the sheet but when I closed it, it is not saved.
System: Window NT and Excel2000
Thank youmai wrote:
>
> The task that I need to do is open existing excel file, append data to
> the last row, save data then close it. Everything works fine except
> saving the data. I used property workbook note to save then invoke
> node to close a workbook then invoke node to quit excel application.
> I watched and see that the data is written to the sheet but when I
> closed it, it is not saved.
>
> System: Window NT and Excel2000
Use Task Manager to check if Excel is still running.
I find that the programmatic close of Excel doesn't work. Excel is left
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Excel Get ActiveX References.vi and closing references -- grrr
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The "grrr" in my Subject line is a reference to how I feel about LabVIEW's documentation from time to time. I'm a dinosaur who came from text-based programming, and did a fair amount of C coding, so sometimes with LabVIEW I'm left with this awful feeling in the pit of my stomach like, "Good grief! How much memory must LabVIEW be hogging up in the background when I use this vi?" or "What happens to those variables (wires) in that subVI when it completes but doesn't close? What are their statuses when I come back in the next time?" or "What if I put a lot of elements into that array the first time and then started from element zero the second time and just put in a few? What has happened with the memroy that was allocated when there were a lot of elements?"
Today I'm stewing about this "Excel Get ActiveX References.vi," and what happens to the "ActiveX references" it generates each time I call the subVI in which "Excel Get ActiveX References.vi" lives. I think that at least one of the "ActiveX references" it generates when I call it is of the type Excel._Application. Then there appears to be an Excel._Workbook, and others. You see, I've used "Excel Easy Report.vi" to put some data into an Excel spreadsheet, and I want to tell Excel to do a "Save" on the open spreadsheet. I think ActiveX is the (a) right way to do that, so I'm wading into the ActiveX fray... But this "Excel Get ActiveX References.vi" says in its help file, "Do not close ActiveX references opened with the Excel Get ActiveX References VI. References must remain open until the report is closed. Otherwise the error 3001 will occur." Well, these Excel workbooks that get created by my VI could well stay open until after my LabVIEW VI terminates!
So (finally), here are some of my quesitons:
1) When I go through my subVI once, pointing to one workbook, I'll get one set of references "created" or "opened" or whatever you call it when ActiveX references spring into existance. Now, when I exit the subVI, is it going to automatically try to "close" those ActiveX references? I don't suppose so, since subVI's stay in memory until the calling VI closes.
2) Now, I come back into my subVI a second time. New workbook gets created, so I get new references. Ok, fine. Uh oh! What happened to those old references? I suppose that if I didn't somehow save them off, I've probably lost the ability to get them back (maybe I'm wrong, but I don't need them back), but is LabVIEW going to "close" those old references (from previous times through the subVI) because I can't get to them anymore? Won't that cause the dreaded error 3001? If LabVIEW is not going to "close" them, what in tarnation happens to them (the old C programmer in me creeping back out)?? Now it's some oddball, orphaned reference, floating out there, hogging memory, waiting to make something crash intermittently and be a debugging nightmare?
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Well, thanks for reading my novel. I don't know what can be done with LabVIEW documentation to make it more satisfying to folks like me, but perhaps someone can weigh in on all my ActiveX questions here.
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Solved!
Go to Solution.You need to close EVERY ActiveX reference you open. If you don't you'll end up with some Excel processes running even after LabVIEW exits. You can see them in Task Manager.
I, personally, don't like the LabVIEW Report Generation Tool Kit for working with Excel. I don't think it's flexible enough. I have a growing library of VIs that I've written that open, manipulate, and close Excel. Some references I pass from VI to VI and some I close right after I use them. It all depends on what I'm doing. If I want to enter read or write data from/to a certain range I'll get the range reference, read or write the data, then close it right away because I have no use for it any more. On the other hand, when I open Excel or a Workbook I keep the reference until I'm done, which could be later in the program.
1) When I go through my subVI once, pointing to one workbook, I'll get one set of references "created" or "opened" or whatever you call it when ActiveX references spring into existence. Now, when I exit the subVI, is it going to automatically try to "close" those ActiveX references? I don't suppose so, since subVI's stay in memory until the calling VI closes.
2) Now, I come back into my subVI a second time. New workbook gets created, so I get new references. Ok, fine. Uh oh! What happened to those old references? I suppose that if I didn't somehow save them off, I've probably lost the ability to get them back (maybe I'm wrong, but I don't need them back), but is LabVIEW going to "close" those old references (from previous times through the subVI) because I can't get to them anymore? Won't that cause the dreaded error 3001? If LabVIEW is not going to "close" them, what in tarnation happens to them (the old C programmer in me creeping back out)?? Now it's some oddball, orphaned reference, floating out there, hogging memory, waiting to make something crash intermittently and be a debugging nightmare?
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I used to program in C and Assembly many moons ago. You should have seen my first LabVIEW code. I go back and look at it just so I can see how far I've come in the last 12 years. I feel your pain.
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Share what you know. Learn what you don't.Greg, this is the problem: Granted that Excel closes properly when users try to close all opened refnums, when this VI is used as subvi (loop) "Excel.exe" does not close (every instance opened). It stays in the Task Manager until the program that uses this subVI ends. This is not good because "Excel.exe" uses a large memory.Just think what will happen if I try to use this "Excel" subVI a couple of hundred times in an application VI. It leaves at least 6000kb of memory for every instance multiply it by a couple of hundreds, then your PC crashes.
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Ekinci"fuzzylogic" wrote in message
news:[email protected]..
> Hello,
> i use Labview 5.1 with WIN NT4.0 SP6a and i programm a fuzzy Logic
> tool for a exam in Computer Science.
> Now i have a problem, and i read something about the GOOP and the
> EXCEL Toolkit. I download it and try more times to install but i can't
> link the *.llb in the Function Palette. Is this GOOP and Excel Toolkit
> only for Labview 6.x ?
>
> I solve it with ActiveX and Excel, but my very big Problem is, i need
> to read2 string from the Excel table from the same time, and with
> ActiveX i don't find any method how can i do that.
>
> I don't know how can i read 2 Strings from a Excel table, Can i do it
> with the Excel Toolkit,if yes how, m
aybe anyone make it or any
> helpfiles?
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