Use To Pass Excel Parameters To A User Defined Excel Formula?
Apr 5, 2011
With vb.net I would like to select 4 cells in Excel and then pass those cell values along with 1 button tag to a formula in Excel.I press a button with a month, say "May" as text. I want to grab a cell in Excel labeled "May1t" the value of which is the number of hours until may. This is the code I'm using.
xlsWB.Worksheets(2).Range(Month1 & "1t").Value I am able to set a variable with this as the value but,
I want to pass this cell (which will be updating as the time counts down) and 3 other similarly specified cells along with the button tag to an Excel formula.I have something like this:
Private Sub F_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles F.Click
xlsWB.Worksheets(4).Range("B2").Formula = "=MyFunction()"
xlsWB.Worksheets(1).Range(Month1 & "1t").Select()
End Sub
The formula takes the parameters in the order: MyFunction(Cell,Tag,Cell,Cell,Cell).
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May 5, 2010
i am using vb .net and importing excel sheet to ms access. i am doing this work very well. but i want that when a user select the excel file to import, than user must asked for the data types that he want for the different fields, by default when user imports the excel file it assign the text data type to text filed such as name and number data type to numeric field such as roll_no. but i want that user select the data type according to his need.
code that i use is to import file is given below:
Imports System.Data.OleDb
Imports excel = Microsoft.Office.Interop.Excel
Public Class Form2
[Code]....
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Jul 7, 2011
The problem is I am able to extract the data by giving cell reference like: TextBox1.Text = objWorksheet.Cells(5, 2).value
But I want to select a row as per input given by user and want to extract data from that row.
The input given by user is in text format, in my case name of employee. And I have to extract address of that name.
[code]...
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May 8, 2010
i am trying to read an existing excel 2007 file from vb.net i used a form with single button and i written code in button click event code is :[code...]
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Jun 11, 2010
I have a formula, found in an Excel sheet that I have to convert to vb.net...I can't figure it out, eventhough it's seems a quite easy formula to me.the formula is: Mod(X + Int(Y/100000);20)In fact if I render some values...and use the Mod function in Excel or in VB.NET it gives me other results.
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Jun 21, 2011
I want to write a formula to SUM from column B4 to M4, this should be done using vb.net programming.
I tried using the following stuff:
oXLWsheet.Range(4, 14).Formula = "=SUM(oXLWsheet!$B$4:M$4)"
"=SUM(B4:M4)"
"=SUM(B4,C4,D4,E4,F4,G4,H4,I4,J4,K4,L4,M4)"
Nothing is working for me. I'm getting the following error when I run the code:
"Exception from HRESULT: 0x800A03EC".
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Jul 26, 2011
I have complex formula calculating the value of a cell and it calculates the value for me. I want to get rid of the formula from the cell and want to retain the calculated value.
I have :
Dim range As Excel.Range = getRange()
For Each cell in range
' What should do to retain the value and get rid of the formula in the cell.
Next cell
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Jul 22, 2009
i am generation a excel sheet from vb.net and have a question on inserting a forumla from vb.net into an excel sheet.
I am creating this sheet out of vb.net but with a statement like this:
worksheet.cells (1,10) = "myvalue"
For my formula i need the read cellnam like "A1". But i have only the value cells (x,y). How can i get the real cellname for my formula or how am i able to insert a formula with the given information (cells(1,1))?
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Nov 22, 2011
I have been doing a lot of reading on this topic and most folks seem to agree that having Excel is required to use the COM Interop libraries. However they are never specific as to where that should be installed. Does it need to be installed on the machine I am developing on or does it need to be on every machine that I deploy to?
Edit: I should mention that this is desktop development/deployment targeted for all Windows machines.
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Aug 27, 2011
I have the following columns : (Using Excel Formula)
A B
------------------------
1 | Date | Value |
------------------------
2 | 8/20/2011 | 92.8 |
3 | 8/21/2011 | 92.4 |
[code]....
I want to calculate the difference between 1st Value (B2) and last Value (last populated row in column B)
Edited :
Using formula : =B2-B6 is not what's required. (I want diff in Cell C2)
I want when the user enters the value in B7 it automatically shows the difference between B2 and B7, when he populates B8 then it shows the diff between B2 and B8 and so on.. I don't want some direct method to do this in Excel and not by iterating all values to check the last value.
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Jun 10, 2011
I'm using Visual Studio 2010 (VB.Net) and Open XML SDK 2.0. How do you insert a formula into an Excel 2010 worksheet? When I do this I also wish to set the CellValue property of the cell to a DBNull or EmptyString to force Excel to recalculate the cell when the user opens the workbok.
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May 18, 2010
In visual basic code works as below MyWorksheet.Range("A1:D1").Formula = "A1B2"
In excel it shows in
A1 as A1B2
B1 as A1B2
C1 as A1B2
D1 as A1B2
what i want do
A1 as A1B2
B1 as A1B3
C1 as A2B4
D1 as A2B5
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Aug 19, 2010
what the code for this excel formula?
=floor(3675/500,1)
=mround(3675-(7*500),0.01)
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Jan 5, 2009
Has anyone created a regex that matches each of the cell references in a given Excel formula? I'm trying to extract a list of cell references into an ArrayList from a provided Excel formula. Ideally, the ArrayList would also preserve any cross-tab or cross-workbook reference information. The key is for the regex to be compatible with any potential Excel formula, as the formula will change with each use.This seems to capture cross-workbook references:
'[.+'!($?[A-Z]+$?[0-9]+(:$?[A-Z]+$?[0-9]+))
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Nov 13, 2009
I am exporting data to an Excel spreadsheet from a VB.Net 2008 application. Now I'm trying to format the spreadsheet. So I am creating macros in Excel that format the spreadsheet, and then using the code it generates in my application. The problem is that the constants used in VBA are not being recognized in VB.Net (They are recognized in VB6). I have the following imports:
Imports Microsoft.Office.Interop
Imports Microsoft.Office.Interop.Excel
Is there something else I should be importing? For example, in this line, xlNone and xlDiagonalDown are flagged as not declared.
oXL.Selection.Borders(xlDiagonalDown).LineStyle = xlNone
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Apr 24, 2011
I'm very new to VB.Net and just trying to find my feet a bit and get my first programs running.url...Which should allow me to run excel from VB.Net, but I get heaps of errors - basically anything specific to Excel comes up with 'type not defined' or 'name not declared'. I've tried adding the reference several times and I'm pretty sure I've followed the tutorial to the letter so I'm stuck.Don't want to post the whole code because it's very long, but here's the beginning and end:[code]
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Jul 20, 2010
I need to access the current instance of MS Excel. To do that, I wrote the following code:
Imports Excel = Microsoft.Office.Interop.Excel
Imports System.Diagnostics
Private _ExcelApp As Excel.Application
[Code].....
The code runs nice, but it has a problem: After the user close the Excel application (click button X - note: no other instance of Excel exists), if you open the Windows's task manager, its possible to see the process Excel.exe.
If I open and close the Excel application, there is no process Excel.exe, but if I run my code with the Excel application openned, after the user close the Excel application, the process Excel.exe isn't finished.
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Dec 7, 2010
We are using .NET2.0 and Office 2003 to develop a desktop application. We met the following problem which may fail the project.We developed some functions in our .NET application and exposed to Excel as an external automation. Then we developed reports template in Excel with these custom functions to generate our report data defined in Excel cells. However, when we tried to refresh the report via .NET to call Excel in background mode, we met the problem that the defined automation is either not loaded or not working after loading. It is extremely volatile. Then we could not refresh the data as desired to display it in .NET forms.
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May 6, 2010
i am new to vb.net programming i am trying to access excel worksheet pre defined with name Books.xlsx through vb.net i have taken a form with one command button i wrote below code in that:Imports Microsoft.Office.Interop Imports System.Runtime.InteropServices
[Code]...
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Jun 3, 2011
I dont get this. I use code from one project that works and paste into anther and now its full of errors.
I have no clue how to solve this (See attached image).All of the errors have to do with Excel and Outlook applications.The info for "Imports" section is the same as my other project and all the "Dims" are the same as well. (These are two separate projects).Basically, I copied a form from one app and made a stand alone app for that form.
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Aug 23, 2009
I am trying to enter the following on an excel spread sheet from vb.net:applic.activesheet.cells(1,1)="=server|topic!" & Item & My.computer.keyboard.sendkeys("{CNTRL} {SHIFT}{ENTER} ")The error says: "Expression does not produce a value"I tried even {ENTER} and still the same error.
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Jun 27, 2012
I am currently using Gembox to pass text to excel and I have a problem. I have imported the required resources but when I try to pass an item in a list box it comes to an error..here's my code
'checkrow is a number loaded from that same excel
Dim ef As ExcelFile = New ExcelFile
ef.LoadXls("C:\Users\DF\Desktop\registro_prestamos.xls")
[code].....
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Dec 23, 2010
I am trying to parse the parameters of Excel formulas like "=a(b)", "=a(b,c)", "=a(b,c,d)". I'd like extract the function name "a" and the parameters "b", "c" and "d".
There are loads of examples on SO to parse HTML and so forth, but none specifically for parentheses.
So far, I've got this "=(.+)(([^,)]*)(,[^,)]*)*)" but when I parse "=a(b,c,d)" it puts "a" in match(1), "b" in match(2) and ",d" in match(3). So "c" is lost and the comma before the "d" is a pain.
How can I parse a string like this with an arbitrary number of parameters, ideally dropping the commas?
The ability to parse "=a(b(c),d(e(f)))" would be great...
Edit: I know that a parser is the correct solution and I have used Devin Cook's excellent Gold Parser with great results before.
However, the particular case I'm facing is to extract the arguments from a known Excel formula. Specifically, if the formula contains the string "=Travel(", I know that it will have 4 arguments and if they don't parse it's not a problem. This is simply a "nice to have" function which can fail occasionally without it being an issue.
regex for "=a(b,c,d)", "=a(b,c,d,e)", etc., with the constraint that there will be no nested parentheses or commas?
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May 6, 2010
i am new to vb.net programming i am trying to access excel worksheet pre defined with name Books.xlsx through vb.net i have taken a form with one command button i wrote below code in that:
[Code]...
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Sep 6, 2011
How to pass values to a particular column in Excel
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May 6, 2012
I have created a COM Object via VB .NET and exposed some functions that I wish to call in Excel using VBA. I am currently trying to pass an array of objects as a result to VBA but Excel is complaining the following:
'Function or interface marked as restricted, or the function uses an automation type not supported in Visual Basic.'
I have looked around on the internet and have seen similar issues but not to one I am trying to do.My VB .NET function, which I wish to call in Excel is declared as follows:
Public Function CallArray(ByVal serviceName As String, _
ByVal effectiveDate As String,
ByVal serviceParams() As System.Object,
ByRef ArrayRes() As System.Object) As System.Boolean
VBA is complaining about the System.Objects my question is how the heck are you supposed to pass and return arrays from .NET to VBA. Also the data that will be in the ArrayRes() is mixed type, its not just strings etc, its an array of arrays that can contain strings, integers doubles etc.I chose VB .NET because I assumed it would be possible to map to VBA easier.if System. Object and Arrays in VB .NET is not the way, ie maybe theres another way via collections or lists, then Im open to that. I just need to get this data into VBA.Also I could move over to C# if needs be.
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Feb 10, 2010
I have a text box on a Powerpoint Slide. The text box contains text that I need to use in an Excel program. The Excel program will be run from a button on a toolbar within Powerpoint. I need to be able to pass the text box text, from Powerpoint to a variable in Excel, so I can use it in my Excel VBA code.
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Jan 22, 2009
I currently need to build a Automation Add-in for Excel. This add-in will load a recordset from Database to Excel. I would like to have function A() that I input in Cell as a formular. This function A() call a the add-in to load the data from Database to Excel. The data should be a matrix. So that means I would like to set in Excel worksheet a range of data by just calling single function in a cell. (I am sure there should be some way to implement it)As I know if I develop a shared Add-in by VB(or VB.Net) and in the add-in, I can get an Object of Excel.Application. By this Excel.Application object, I can get full control of Excel inside the Add-in. That means if I define a sub that load datamatrix from database and using the Excel.Application object I can populate the data matrix to the Excel.
I have done much research on internet and I now have built a shared Add-in for excel. I should say this add-in works fine without invoke the Excel.Application Object that I have tested. But when I call the Add-in function that invode Excel.Application Object from Excel I got an error as below:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Run-time error '2147467262'(*)
Unable to cast object of type 'System.String' to type Excel.Application
[code]....
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Jun 24, 2009
can I use Excel APi (Interop.Excel) without installing MS Excel.
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Sep 4, 2011
what's my mistake in my code
Private Function GetInfo() As Boolean
Dim completed As Boolean = False
Dim MyExcel As New Excel.Application ---"error"
[Code].....
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