I want to update custom formulas added my Excel add in. Using Application/worksheet.Caclulate() updates whole sheet, but I want to update only those cells which are using my formulas.
I haven't tried this, but what if you used the technique described in Get formulas from a range of cells on the entire UsedRange of a worksheet. Then iterate through the returned array to find all the cells that have formulas matching one of yours. Then for each of those cells, call Calculate().
The Application object provides a method to force an immediate recalculation. Application.calculate(calculationType) starts a manual recalculation based on the specified calculationType. The following values can be specified.
full: Recalculate all formulas in all open workbooks, regardless of whether they have changed since the last recalculation.
fullRebuild: Check dependent formulas, and then recalculate all formulas in all open workbooks, regardless of whether they have changed since the last recalculation.
recalculate: Recalculate formulas that have changed (or been programmatically marked for recalculation) since the last calculation, and formulas dependent on them, in all active workbooks.
So, you could play with an argument to get the required piece recalculated.
Related
I am working on an Excel Add-in and have created some custom functions in it. Now my user has created some functions (150+ custom functions) and all of these custom functions have parameters as references to other cells in sheet. When user updates some text cell (whether referred in some function call or not) , whole sheet is refreshed and Excel shows busy in all cells having custom functions it. I understand that if a cell is referred in some custom function and it is updated, that custom function is called to show updated data, but it should not happen when user edits a cell not referred in any of the functions.
I cannot change sheet calculation mode to manual as it will stop updating other cells which are changed by user. Also If I change calculation mode to Manual and on changing it back to Auto again refreshes whole sheet, so setting it to manual has drawbacks without gaining anything in my case.
Is it possible that your UDFs use volatile formulas such as
NOW,TODAY,RANDBETWEEN, OFFSET, INDIRECT, INFO, SUMIF, RAND or you declared your UDFs to be volatile?
In this case functions are recalculated if changes in any cells are made. For example if you fill hundred thousand lines with RAND it takes few seconds to recalculate after entering any value to a blank cell.
More on volatile formulas:
Volatile values in functions
More on volatile formulas in UDFs:
Excel Recalculation
I'm resurrecting some old scientific data from the early 2000s.
I need to locate the custom functions that allowed the data to be shown. The spreadsheet that I have is full of #REF! cells, as they are supposed to be calculated based on a custom-defined formula (here, called 'RESECTION').
How do I find this formula? If I can see the math it was performing, I will be able to use this old data, and extend our timeseries significantly.
The spreadsheet is an ".xlsm" document. There is an associated file that is ".XLM"; it provides some GUI-like functionality that is now broken, and I do not see how to access the commands (?) or other VBA that is inside.
I have not had success with this solution.
File with the VBA can be found here; SURVEY.XLM.
Problem is seen here; calling function from SURVEY.XLM. How do I access the formula within here?
I can see that the formula is in there; how do I see the calculation it performs?
RESECTION is a named range refering to cell A4 on the hidden Survey sheet.
In the VBE immediate window type thisworkbook.Sheets(2).visible = true and then thisworkbook.Sheets(2).select.
Cell Survey!A4 contains the value =RESULT(64).
The rest of the sheet contains the macros - first time I've seen or tried to use a filled in macro sheet.
I tried Ctrl+Fto find the definition of RESULT but it comes up with Macro error at cell [SURVEY.XLM]SURVEY!A364.
I am working with an excel sheet and wondering is there any way you can enter a currency value into a cell without completely removing the previous amount. I am trying to keep a record of numerous previous entries put into the excel sheet. It needs to be enabled so it is just a case of adding the new value and the previous values would be stored in the same cell. I know its a long shot but any help would be seriously appreciated. Would look something like below with the €1000 being the last entry and the €3000 being the first.
€1000
€1300
€1250
€3000
You cannot squeeze more than one value into a cell.
You could write VBA code that could, for example, use the Change event of the worksheet to add a comment to the cell and append the previous value to this comment. Or use this event to copy the previous value to a, perhaps hidden, worksheet.
For completeness I should mention that there is a Track Changes feature in Excel but it requires the workbook to be shared - which I do not recommend. Excel is not designed to work with multiple-users.
In short, I would either:
Create a macro that runs every time a cell within a certain range is changed, and then writing out the result based on those cells.
-OR-
Create a macro to automatically insert functions that would do the same thing
Things to consider are that this would need to work on multiple tables of varying length without need to manually change anything, and that the results of individual sheets would need to be also displayed in summary on another page.
Which would be more desirable/more efficient/easier to implement?
The subject data entails testing procedures. Sheets contain testing criteria and a column containing PASS/FAIL results. I need to tabulate these. The start of the table and the end of the table are at different rows and are subject to changing.
Without seeing your actual problem I would definitely go for the first option. Having many formulas inserted into cells dynamically I think would be a pain.
Use the Worksheet_Change event and test whether the cell changed is one of your target range, then perform whichever action is required.
I have an App_SheetChange() handler in an add-in that does some processing as modify their spreadsheets.
I've already optimized the handler to only perform the processing if the user's update happens within the range that the processing is dependent on (only one column).
But when users delete rows or insert rows, I don't need my routine to run.
How can I somehow detect that the change that resulted in the call to App_SheetChange() was simply inserting/deleting a row, or in some other way ensure that inserting/deleting rows doesn't call App_SheetChange() in the first place (which seems a bit heavy-handed)?
One potentially-important caveat: the code has to live within the add-in, I can't add macro code to individual workbooks.
I can't think of any way to do it.
Maybe you could use a workaround, say, to check whether UsedRange, or CurrentRegion, or some named range lost a column/row since last App_SheetChange.
Or maybe, you could set the .ID of each cell in the column to the address of that same cell, and if on an App_SheetChange the Application.Intersect(your_column, Target).ID doesn't represent the actuall address of the Application.Intersect(your_column, Target), then a deletion (insertion) has happened, and instead of running your macro you should update the .ID property of each cell in the column again.