how to improve the following error handling strategy and code samples so as to maximise its usefulness for the purposes described.
During function calculations in VBA, such as is done by numerical integrators, numerical run-time errors may occur, such as:
Err.Number = 5 Invalid procedure call eg. LOG(-5)
Err.Number = 6 Overflow
Err.Number = 11 Division by zero
My present strategy to address these errors:
Say the variable x is used in the function calculations, and some particular value of x causes one of the above errors to occur. After the above errors are trapped, the x value is increased slightly from its initial value, and the failed calculation line is retried (Resume). On the next error trap, the x value is decreased slightly from its initial value, and the calculation tried again. This way, the initial x value is cyclically changed by adding increasing magnitude increments of alternating signs, searching for the nearest x value which will allow the function calculation to be done without error. Thus it causes the x value to swing around the initial x value in a pendulum-like manner, but with a widening swing per pass.
So far, I have the following code:
Code:
ErrorHandler:
If Err.Number = 5 Or Err.Number = 6 Or Err.Number = 11 Then
If Initial = True Then
I have a userform that reads data from a sheet with thousands of records (lines) each record with some 30 cells (columns). I wanted the user to scroll up & down in the sheet, using the keyboard arrows and I wanted the userform to show the relevant record, where the cursor stands. For this purpose I created an event handler (Worksheet_SelectionChange) that identifies the scrolling, populates the form with the relevant record data and then returns the focus back to the sheet. The command I have used to send focus back to the sheet (so the user can keep scrolling) is:
Now comes the bizarre part... This macro can work perfectly for hours and then decide to "die", or can work on one computer but not the other (all with Excel 2007, BTW). When the macro dies (or if it does not work, to begin with), the debugger points to the command I mentioned, with an error message "Run-time error '5' , Invalid procedure all or argument."
how to make my macro "stable" (make it work always and on every computer)?
Unfortunately, I cannot upload the file, because it contains confidential data (and it is not in English...).
VB: Private Sub Worksheet_SelectionChange(ByVal Target As Range) lr = Cells(Rows.Count, 1).End(xlUp).Row If Target.Column < 2 And Target.Row > 1 And Target.Row <= lr Then crow = ActiveCell.Row
I have a piece of code with some error handlers in it but for some reason the error handler can't deal with a second error. The example code below suffers from the same problem in that it falls over when it tries to process the i = "w" line for the second time. If you F8 through the code the error handler works the first time but not the second. Why is this and what can I do to get it to keep going to erH when it hits the i = "w" line?
Sub test() Dim i As Integer testing: On Error GoTo erH i = "w" erH: i = 1 GoTo testing End Sub
I have written a long bit of code, which works fine. I decided to add an error handler just in case of any errors. I have run through my code numerous times to confirm that there is no error, but the msgbox still pops up.
From my userform I use a calendar to input in two text boxes the "from" and the "to" dates and get a "custom" statement of activity by company.
If I input two dates that do not exist within my summary of sales how can I code in order to get an error message AND clear the text boxes. (textbox1&2)
Example: jan 07 to Dec07 do not exist/ Oct 09 does "from" and the "to" dates = 01/01/2007 to 12/10/2010 would work (and it does) 01/07/2007 to 12/06/2007 does not exist anywhere then I want to see a message box to that effect AND the textboxes cleared for input of the new "from" date in textbox1 If Impossible at least can you help on an error handler? (on error resume does not work or at least I think it does not)
Before doing some modifications in a data sheet, I first check with the below code whether a certain list is complete or not using the VLOOKUP function. If I encounter a missing value in the list, a userform appears asking to fill out 3 data fields, which are then added to the original list to complete it. All of this works fine if only one line is missing; if there are two (or more) lines missing, all goes well untill the VLOOKUP function errors out on the second line missing. I can't find out why everythign goes welll with the first missing line, but not with the second missing line.
Sub proCheckVesselCodes() Sheets("Sheet4").Select Range("K1").Value = "Check" Set varRange1 = Range("A1") fctCountNrRows varRow1 = varRow varRow2 = 2
I can not seem to find a good example of code for a try and catch error handler out on the web for something I am working on. Here is the code I am working with:
I am writing a macro to track stats in a workbook. The workbook has the check every tab in the given workbook, hidden and unhidden. In order to track the stats I find a column labeled "Read Dates" on each worksheet. The "Read Dates" column is not always in the same location so I have the macro Find the words "Read Dates". To make sure the cell the macro finds is the column label and not just another cell where someone may have used the words "Read Dates", I have an 'If/Then' statement checking the column to the left to ensure "Rev Mo" is there. If the state is true, the macro begins tracking stats. If the statement is false it attempts to find the next cell containing "Read Dates".
My problem occurs when the macro selects a sheet that contains no data or does not have the words "Read Dates". To help remedy this, I have an Errhandler that simply tells the macro to move onto the next worksheet. My problem is that there are several worksheets that do not have a cell with the value of "Read Date" so the second time the ErrHandler errors. Below is the section of the code I currently have an issue with.
Sub Begin_tracking()
'Error Handler On Error Goto ErrHandler
WCount = Worksheets.Count For i = 1 To WCount If Worksheets(WCount - i + 1).Visible Then Worksheets(WCount - i + 1).Select
Can anyone think of a better way of doing this so the entire workbook is worked or tell me how I can reset the Error Handler is it will move onto the next worksheet? I've looked into help on this forum to rest the ErrHandler but what I've found and tried has not worked. The ErrHandler may be invoked 2 times or it may be invoked 20 times depending on the workbook.
For some reason I thought this would be simple, but not as simple as I thought. I have a UserForm that enters data into a sheet, but before it is entered, the user is prompted for the sheet password (sheet is protected). What I tried to do is use an error handler to exit the sub if the password is incorrect, user hits Cancel, etc. Here is the code I am using:
What I'm wondering is when it is a good idea to use Error Handler's. I've got maybe 50 procedures in the project I'm working on. Some of the procedures are merely parent procedures calling other procedures. Since other people will be using this workbook, I want there to be a way to troubleshoot if errors occur, but it almost seems bad form to have an Error Handler for EVERY single procedure. Conversely, somehow, someone always finds a new and creative way to error out my workbook, and they don't understand the code and/or are not VBA literate. I can always fix afterwards, but solving the problem immediately over the phone is not ideal. I'm very new to debugging for other users. The workbook is currently in constant development/improvement used by only a handfull of users, but eventually it will need to be at some decent release stage, where the VBA code will be password protected, and I will not want the user getting into the code.
I wrote a macro that works fine, although it runs extremely slowly as if plodding along through all of the cells one at a time. I'm sure the computer is faster than that, so I would like it to chug through more quickly.
I am using some syntax that could be optimized ....
Do any of the templates/backgrounds offer the user a white background with every fifth row and column an off-white colour?
My document will be read by LOADS of people, so I want to be able to follow my eye across. A soft system like that lets someone scroll across twenty columns and see they're still on the same row. It's like writing 7 Oct 2013 instead of 07/10/2013. It makes sense whether you use UK dd/mm/yyyy or US mm/dd/yyyy. People say 'October' not 'month no 10.' That's my logic and design principle.
I was working with automatically exporting the contents of a textbox to an image file and found this post which I was able to modify slightly for my purposes.
Is it possible to improve the quality of the output image. I need to print out the resulting image and the quality of the image this method creates is too poor for my purposes.
Attached is a spreadsheet that does exactly what I need it to do but I know that the code can be written better. Perhaps some experts can clue me in to how I could improve.
There is a button on the sheet Mandatory Training that looks at the sheet CS CM and finds certain numbers, when it does it makes them red and copies them to the Mandatory Training sheet. If other lines are added to CS CM that have the same numbers and the button is clicked again, only the new entries are made red and copied to Mandatory Training.
I am generating the chart from the following code but when it prints i.e (Mode#1 or 2 or 3 etc....) with type i.e. (GL_Weld or Bend or any other text). Printing as i.e. (Mode#1Bend or Mode#2GL_Weld). I would like some space in between (Mode#1 Bend) or (Mode#2 GL_Weld) or even put it in next line underneath it ( Mode#1 Bend). How do i incorporate and space or enter next line? Code as follows:
i have this macro from this webiste to move every 2nd cell to the row above...(ie B1---after macro---becomes A2) I want this macro to be able to do exactly the same but instead of having a cell, it will have a row...
Code: Sub moveDefs() Dim i, LastRowFrom As Integer 'Identify the last row of the rule set that contains data
I have a large worksheet (Sheet1) containing approximately 15,000 records (15,000 rows x 21 columns). I need to search through all these records, and manually decide whether a record should be copied onto another worksheet (Sheet2) or not. The code I have written works very well (as far as I can tell), but it is extremely slow (the searching takes forever).
The code is as follows:
Sub SearchAndCopy() Dim SearchRow As Long Dim LastRow As Long Dim SearchColumn As Long Dim LastColumn As Long Dim CopyToRow As Long Dim SearchString As String Dim Found As Boolean Dim Response As Integer On Error Goto Err_Execute Found = False 'Fetch Search Term Sheets("Sheet2").Select SearchString = LCase( Range("F3").Text)......................
how to reduce formula size/improve excel efficiency?
I have a really complicated formula with lots of COUNTAs, VLOOKUPs, IFs, etc etc etc which returns a variety of values, ZEROs (for blank cells being referenced), and #NAs.
I would like to turn all ZEROs and #NAs into ""s without repeating this super long formula over and over.
If I want to improve my excel performance like ability to open multiple excel and sheets to perform calculation, should I change to a SSD or a faster intel chip? My current PC sometimes give me a black screen for my excel sheet or is unable to save certain sheets when I open too many sheets.
Is there an Event Handler that runs a macro whenever any control object in a worksheet has its state changed or whenever any checkbox is checked/unchecked. I want to have a method handle this outside of the checkbox since the number of checkboxes are dynamic and should not have to be individually coded by the user.
I want to create an event handler for multiple buttons. I know that it can be done in VB but I'm not sure about VBA. Auto Merged Post;bump* Auto Merged Post;bump*
I have a workbook, that when opened the first time needs to prompt the user to save it. I got that working with no issues by using
Private Sub Workbook_Open() SaveOnOpen End Sub
where SaveOnOpen is a procedure in another module. What I would like to do now is re-assign the Workbook_Open sub to be set to null, so that it doesn't run any more. Is it possible to somehow assign Workbook_Open to call a null procedure, as opposed to setting up an onTime call to delete the code itself?
I have a standard module in which I gather information from a workbook, create an XML document, Post it, and collect the value I need from the response XML. Thing is I have to run through it maybe hundreds or thousands of times depending on the number of records I have. It takes ten years to finish the loop. I have read that it might be possible to post them concurrently using a class module and an event handler, but I have not worked with Class modules before. Compiling all the XML documents into memory is easy, posting them and getting my return values in a timely manner is the problem at hand.
I'm trying to attach Worksheet_Change to a worksheet created at runtime. Usually you put it in the code window of the Sheet object but what do you do when you create the worksheet at runtime?
to save typing the same things over and over I have created a dialog box with checkboxes, named with several common terms we use when writing an invoice. i.e. dig a hole, paint a fence etc. I have assigned the dialog box to a button on the worksheet.
When I check the checkboxes, I want the text to go to a blank section of the invoice one underneath the other. The reading I have done suggests this is an event-handler subroutine, I just don't know enough about VBA yet to be able to write the code.
Dim strFileName As String strFileName = Application. GetOpenFilename(filefilter:="Excel Files (*.xls), *.xls", Title:="Please select the excel file to be copied")
