I'm using a Macro to refresh some data in PowerPivot, it then autosaves the updated file on my computer.
My problem is that I'm using SSH in order to connect to a database and due to bad connection sometimes it crashes and stop the refreshing process. Then powerpivot can't refresh the worksheet but my macro keep being executed as if nothing happened...
I'd like to know if there is a way to handle in VBA such an error in order to loop the refreshing process until it is fully and properly executed.
The simplest and most straight forward way I would suggest is to use a boolean variable and assign in to yes if the powerPivot gets refreshed properly and false if it doesn't. Thus only when the variable is true the macro will run. An example is:
Dim result As Boolean
result = False
if PowerPivot gets refreshed then
'the refesh code
result = true
end if
if result = true then
'run the macro code
end if
Thus only when powerpivot is fully refreshed the macro will run. Otherwise not.
Related
I have a spreadsheet with 4 worksheets, each one connected to a power query which connects to an OLEDB database and runs a select to import data into the workbook.
I am trying to automate the refresh of the queries.
I have VBA in the workbook which
- disables background refresh,
- runs Workbook.RefreshAll,
- resets the background refresh to true (as I need this for the automation software to be able to run it in the first place) and
- then waits 30 seconds to give the automation software a bit of time before it starts saving the workbook.
All the software does is call the macro in the workbook and then save following execution.
The queries correctly execute one after the other and I can tell the data in the tables has refreshed.
The power query confirmation that the rows have been downloaded happens after the VBA completes executing, so the automation software saves it before this is done and Excel reports the download as having failed. This isn't a problem when everything works, but we won't know when the download has truly failed, unless I add in some sort of a row count comparison which is really a workaround rather than an actual solution.
I have tried creating two subs in the workbook, one to do the refresh and then another which calls the first sub and then waits 30 seconds, I was hoping the download would complete after the first sub finishes executing, but this doesn't happen. I have tried refreshing one connection at a time instead of using RefreshAll, tried refreshing the actual power query tables instead of the connections and have tried refreshing with background query set to true and then looping until the refresh is marked as complete (which works if you step through it, but crashes if you just run the VBA in full).
I also tried saving the spreadsheet at the end of the VBA, but it still waits until the save is complete to update the power query status.
My latest VBA:
Sub Workbook_RefreshAll()
Application.DisplayAlerts = False
For Each objConnection In ThisWorkbook.Connections
'Temporarily disable background-refresh
objConnection.OLEDBConnection.BackgroundQuery = False
objConnection.OLEDBConnection.MaintainConnection = False
Next
ActiveWorkbook.RefreshAll
For Each objConnection In ThisWorkbook.Connections
'Re-enable background-refresh
objConnection.OLEDBConnection.BackgroundQuery = True
objConnection.OLEDBConnection.MaintainConnection = True
Next
newHour = Hour(Now())
newMinute = Minute(Now())
newSecond = Second(Now()) + 30
waitTime = TimeSerial(newHour, newMinute, newSecond)
Application.Wait waitTime
End Sub
(I can't remember whether the maintain connection parameter actually helped as I as trying to force the connection to drop after each refresh, but it works so haven't taken it out.)
Instead of Application.Wait try the following:
Do until now() >= waittime
DoEvents
Loop
I am automating testcases for my company's addin.
In one of the testcases, after saving my workbook on my local machine when I try closing the workbook, I am required to click on 'Yes'- saves edited data in our database, 'No'- discards the edits or 'cancel'- simply closes the message box.
I have tried using sendKeys but that didn't work for me.
Eg: For clicking 'No' through my VBA code, I tried to send tab and enter keys like this:
Application.Wait (Now() + TimeValue("00:00:10"))
Call SendKeys("{TAB}", True)
Call SendKeys("{ENTER}", True)
I have tried with various time values still didn't get any success. I would be glad if someone can help me with this.
Thanks in advance! :)
UPDATE: As of now, I have been doing this:
'Some tasks...
ActiveWorkbook.Save
Call Application.Run("workbook.xlsm!Discard")
Application.DisplayAlerts = False
ActiveWorkbook.Close SaveChanges:=False
Application.DisplayAlerts = True
But is there any way to get the window object reference for the message box? Or anyway to stick to the workflow: edit workbook -> save -> try closing -> opt to discard/commit changes to database?
NOTE: By discarding/committing changes to database, what I mean is a server where the data gets updated. Excel is just an interface for the user. I don't want just the excel to be saved but the operation of calling discard/save changes on server as well...
if you have already saved the workbook, you only need to close the workbook. Please try the below code
Activeworkbook.close false
This will close your workbook and you wont be promted for selecting any options.
I have written a macro which is quite big and has several Sub functions. The macro pulls external data and perform Calculations on them and produces results on the sheet along with a graph.
The problem is that the macro runs absolutely fine with smaller data. But when I pull a databank of say 1500 entries, the screen starts flickering and the program hangs. It doesn't even give any error message.
Had it been any faults in loop, the program shouldn't have worked for 200 entries. But it does for a lot of datas except the very long ones. Also the size of arrays used are set up to 2000, and Application.ScreenUpdating has been turned False at the start and True at the end in every Sub.
Another important information as to how the program works:
The codes are connected to a Userform. So if one optionbutton and another entry is true, a particular process (Sub) is happening one at a time. So for each sub I have given Application.ScreenUpdating as False and True. Technically out of 15 subs, perhaps only 5 are running at a time in a module. I have kept every case in the same module as it is easier to handle that way. However, few subs run at a time.
I'm new to VBA so there might be a simple answer to this question but if there is I sure haven't found it. What I am doing is copying data from several workbooks into one master workbook. I have writen the code for this and it works fine. The only problem is the workbooks where I'm retriving the data have userforms that automatically initiate when the workbook is accesed. This means that when I run my code to copy the data it hangs at each userform and wont continue until I've physically closed each userform. So my question is: Is there a way to remotely close the userforms in the raw data workbooks from my master workbook VBA code? Thanks in advance.
to close all userforms, (if you want a specific one , change my code)
sub Close_Userforms()
Dim Form as VBA.Userform 'if not work change to Object
For each Form in VBA.Userform
'can add a condition, like : if Form.name ="Whatever" then
unload Form 'if you don't want to lose the data from the userforms, Form.Hide, and later re-loop and Form.Show
next Form
edit : can also if Typename (Form)="Whatever" then , for the condition
Assuming you mean that the forms pop up when you open the workbooks, disable events before doing so:
Application.Enableevents = False
Workbooks.Open ...
Application.Enableevents = True
for example.
I would suggest trying
Application.EnableEvents = False
Further reading.
Short description: All events (Workbook_Open, Workbook_BeforeSave etc), that usually fires upon opening or closing a workbook, will be ignored.
I have written the following functions to make all macros a bit simpler (and faster). Simply place these functions in a regular module.
Public Function CalcOff()
Application.Calculation = xlCalculationManual
Application.ScreenUpdating = False
Application.EnableEvents = False
End Function
Public Function CalcOn()
Application.Calculation = xlCalculationAutomatic
Application.ScreenUpdating = True
Application.EnableEvents = True
End Function
Begin your macro with:
CalcOff
And then end your macro with:
CalcOn
Remember that you need to put "CalcOn" in all places that exits the running macro.
Disabling ScreenUpdating makes the code "run in background" (nothing will be displayed).
Setting Calculation to manual improves the speed of the code, since no calculations will be made when changing data. But it's very important to exit all macros with "CalcOn", otherwise your sheet won't calculate (and that's not funny), and it will look like Excel has frozen (since ScreenUpdating would still be turned off).
However, if you by any chance happen to break a running code without exiting it the proper way (running "CalcOn"), simply close the Excel application and reopen it. Or run a macro that ends with the "CalcOn" code. Or create a new macro with that simple line.
I have created an Excel Spreadsheet which helps with data analysis from an Oracle database.
The user enters then clicks the "Refresh Query" button which generates a query for Oracle to execute. The query takes a minute or so to complete. Although the VBA code does not hang on ".Refresh", all Excel windows remain frozen until the query completes.
Sub refreshQuery_click()
Dim queryStr as String
' Validate parameters and generate query
' ** Code not included **
'
' Refresh Query
With ActiveWorkbook.Connections("Connection").OLEDBConnection
.CommandText = queryStr
.Refresh
End With
End Sub
Is there a way for the user to manually cancel the query (calling .CancelRefresh) while the Excel user-interface is frozen?
EDIT I don't know if the following is worth noting or regular behavior. While the query is executing, all open Excel windows (including the VBA Editor) become "Not Responding" in Task Manager. Neither pressing Esc nor Ctrl+Break will cancel the script. Also, calling DoEvents (either before or after .Refresh) does not change this behavior.
Here's a method that I know will work. However, there are some complications.
Here's how it's done:
Put the spreadsheet with the data in a separate workbook. This worksheet should execute the refresh query when it's opened and then close once the data is updated.
Create a batch file to call the "Data" Excel file.
Within a different workbook, create a procedure (macro) for the user to call. This procedure will call the batch file, which subsequently calls the Excel file. Since you are calling a batch file and not Excel directly, the Excel procedure will continue because the command shell is released so quickly and opens the other Excel file in a different thread. This allows you to continue working within the main Excel file.
Here are some complications:
I included a method to alert the user that the data has been udpated. There are timing issues where it's possible to try to check if the data has been update when the workbook is not accessible, which forces the user to try to update values. I included a method called my time which pauses the execution of the code so it only checks every so many seconds.
The updated worksheet will pop up in a new window, so the user will need to click on their original worksheet and keep working. You could learn to hide this if you're comfortable with Windows scripting (I haven't learned that yet).
Here are some files and code. Be sure to read the comments in the code for why some things are there.
FILE: C:\DataUpdate.xls
We'll make a workbook called "DataUpdate.xls" and put it in our C:\ folder. In cell A1 of Sheet1, we'll add our QueryTable which grabs external data.
Option Explicit
Sub UpdateTable()
Dim ws As Worksheet
Dim qt As QueryTable
Set ws = Worksheets("Sheet1")
Set qt = ws.Range("A1").QueryTable
qt.Refresh BackgroundQuery:=False
End Sub
Sub OnWorkbookOpen()
Dim wb As Workbook
Set wb = ActiveWorkbook
'I put this If statement in so I can change the file's
'name and then edit the file without code
'running. You may find a better way to do this.
If ActiveWorkbook.Name = "DataUpdate.xls" Then
UpdateTable
'I update a cell in a different sheet once the update is completed.
'I'll check this cell from the "user workbook" to see when the data's been updated.
Sheets("Sheet2").Range("A1").Value = "Update Table Completed " & Now()
wb.Save
Application.Quit
End If
End Sub
In the ThisWorkbook object in Excel, there's a procedure called Workbook_Open(). It should look like the following so it executes the update code when it is opened.
Private Sub Workbook_Open()
OnWorkbookOpen
End Sub
NOTE: I found a bug when this file closed if 1) you accessed the file from the command line or shell and 2) you have the Office Live Add-in installed. If you have the Office Live Add-in installed, it will throw an exception on exit.
FILE: C:\RunExcel.bat
Next, we're going to create a batch file that will open the Excel file we just made. The reason that call the Excel file from within the batch file and not directly from the other Excel file using Shell is because Shell will not continue until the other application closes (at least when using Excel.exe "c:\File.xls"). The batch file, however, runs its code and then immediately closes, thus allowing the original code that called it to continue. This is what will let your uses continue working in Excel.
All this file needs is:
cd "C:\Program Files\Microsoft Office\Office10\"
Excel.exe "C:\DataUpdate.xls"
If you're handy with Windows Scripting, you do fancy things like open the window in a hidden mode or pass a parameter of the file name or Excel location. I kept it simple with a batch file.
FILE: C:\UserWorkbook.xls
This is the file that the user will open to "do their work in." They'll call the code to update the other workbook from within this workbook and they'll still be able to work in this workbook while this one is updating.
You need a cell in this workbook where you'll check the "Update Table Completed" cell from the DataUpdate workbook. I chose cell G1 in Sheet1 for my example.
Add the following code to a VBA module in this workbook:
Option Explicit
Sub UpdateOtherWorkbook()
Dim strFilePath As String
Dim intOpenMode As Integer
Dim strCallPath As String
Dim strCellValue As String
Dim strCellFormula As String
Dim ws As Worksheet
Dim rng As Range
Set ws = Worksheets("Sheet1")
Set rng = ws.Range("G1")
strCellFormula = "='C:\[DataUpdate.xls]Sheet2'!A1"
'This makes sure the formula has the most recent "Updated" value
'from the data file.
rng.Formula = strCellFormula
strFilePath = "C:\RunExcel.bat"
intOpenMode = vbHide
'This will call the batch file that calls the Excel file.
'Since the batch file executes it's code and then closes,
'the Excel file will be able to keep running.
Shell strFilePath, intOpenMode
'This method, defined below, will alert the user with a
'message box once the update is complete. We know that
'the update is complete because the "Updated" value will
'have changed in the Data workbook.
AlertWhenChanged
End Sub
'
Sub AlertWhenChanged()
Dim strCellValue As String
Dim strUpdatedCellValue As String
Dim strCellFormula As String
Dim ws As Worksheet
Dim rng As Range
Set ws = Worksheets("Sheet1")
Set rng = ws.Range("G1")
strCellFormula = "='C:\[DataUpdate.xls]Sheet2'!A1"
strCellValue = rng.Value
strUpdatedCellValue = strCellValue
'This will check every 4 seconds to see if the Update value of the
'Data workbook has been changed. MyWait is included to make sure
'we don't try to access the Data file while it is inaccessible.
'During this entire process, the user is still able to work.
Do While strCellValue = strUpdatedCellValue
MyWait 2
rng.Formula = strCellFormula
MyWait 2
strUpdatedCellValue = rng.Value
DoEvents
Loop
MsgBox "Data Has Been Updated!"
End Sub
'
Sub MyWait(lngSeconds As Long)
Dim dtmNewTime As Date
dtmNewTime = DateAdd("s", lngSeconds, Now)
Do While Now < dtmNewTime
DoEvents
Loop
End Sub
As you can see, I constantly updated the formula in the "Listening Cell" to see when the other cell was updated. Once the data workbook has been updated, I'm not sure how you'd force an update in code without rewriting all the cells. Closing the workbook and reopening it should refresh the values, but I'm not sure of the best way to do it in code.
This whole process works because you're using a batch file to call Excel into a different thread from the original file. This allows you to work in the original file and still be alerted when the other file has been updated.
Good luck!
EDIT: Rather than include a more complete answer in this same answer, I've created a separate answer dedicated entirely to that solution. Check it out below (or above if it gets voted up)
Your users can break the VBA function by pressing Ctrl+Break on the keyboard. However, I've found that this can cause your functions to randomly break until each time any function is run. It goes away when the computer is restarted.
If you open this file in a new instance of Excel (meaning, go to Start > Programs and open Excel from there), I think that the only workbook that will be frozen will be the one executing the code. Other intances of Excel shouldn't be affected.
Lastly, you might research the DoEvents functions, which yields execution back to the Operating System so that it can process other events. I'm not sure if it would work in your case, but you could look into it. That way you can do other things while the process is being completed (It's kind of dangerous because the user can then change the state of your application while the process is working).
I believe I know a way that actually will work, but it's complicated and I don't have the code in front of me. It involves creating a separate instance of the Excel application in code and attaching a handler to the execution of that instance. You include the DoEvents part of the code in a loop that releases once the application closes. The other instantiated Excel application has the sole purpose of opening a file to execute a script and then close itself. I've done something like this before so I know that it works. I'll see if I can find the code tomorrow and add it.
Well, you could consider the old-fashion way -- split the query into smaller batches and use Do Events in between batches.
You could try XLLoop. This lets you write excel functions (UDfs) on an external server. It includes server implementations in many languages (eg. Java, Ruby, Python, PHP).
You could then connect to your oracle database (and potentially add a caching layer) and serve up the data to your spreadsheet that way.
The XLL also has a feature to popup a "busy" GUI that lets the user cancel the function call (which disconnects from the server).
BTW, I work on the project so let me know if you have any questions.