Extracting Excel Formulas From Cells Using .net As Strings?

Feb 6, 2011

What I'm trying to do is extract values, colors, comments, and any formulas for a range of cells in a given worksheet. The ultimate goal is convert a spreadsheet someone has been using as a database into Access tables.

worksheet.Cells(row,column).Value 'extract value WORKS
worksheet.Cells(row,column).Font.ColorIndex 'extract color index WORKS
worksheet.Cells(row,column).Comment.Text 'extract comment WORKS
worksheet.Cells(row,column).Formula 'extract formula DOES NOT WORK

The return value for .Formula is same as .Value. That's not what I need. I'm looking for a textual representation of the formula (to extract rate information embedded within the formula).

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Excel-like Formulas For Business Properties?

Feb 1, 2011

(using VB2008)I was wondering if it's possible to implement dynamic (runtime) formulas between objects and properties. My inspiration is Excel, where any cell can have a hardcoded value or be a function of other cells. So via analogy of a property acting like a cell, depending upon the situation, I would like to either give it a defined value or make it a function of other properties of objects of the same type.

There seem to be two basic levels of functionality, 1) the dependent property recalculates its value every time it's accessed, or better is 2) it detects when its input properties change value and recalculates itself only once (as in Excel). But so far I've failed to find any way to do either with ordinary properties. It seems like I would either have to turn each property into a class (and use events, references to parent properties, etc), or use reflection heavily. Either way I feel like I'm going off the beaten path and making things complicated. Has anyone done something like this?

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Using Formulas In Transferring Data To Excel

May 4, 2011

Visual Basic 2010.I excel in transferring reports on problems in formulas..[code]

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Keep Formulas And Clear Content In Excel Using Program?

Aug 2, 2011

I have a range of data that I want to replace with new data.So, I want to clear the old data and replace it with new data.But the formulas in the old data are also required to work on new data.[code]...

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Asp.net - Writing To Excel File Containing Formulas Is Extremely Slow

Dec 27, 2011

We have an automatic process that opens a template excel file, writes rows of data, and returns the file to the user. This process is usually fast, however I was recently asked to add a summary page with some Excel formulas to one of the templates, and now the process takes forever.

It successfully runs with about 5 records after a few minutes, however this week's record set is almost 400 rows and the longest I've let it run is about half an hour before cancelling it. Without the formulas, it only takes a few seconds to run.

Is there any known issues with writing rows to an Excel file that contains formulas? Or is there a way to tell Excel not to evaluate formulas until the file is opened by a user?

The formulas on the summary Sheet are these:

' Returns count of cells in column where data = Y
=COUNTIF(Sheet1!J15:Sheet1!J10000, "Y")
=COUNTIF(Sheet1!F15:Sheet1!F10000, "Y")

[Code].....

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IDE :: How To Deal With Cells Excel Cells That Update Info Via The Web

Jul 5, 2009

My main goal is to have an excel spreadsheet that automatically plots the overall success of my stock portfolio over time (% change over time). I've been able to incorporate stock data into my spreadsheet by linking it to the web, but the trouble is the spreadsheet will keep no history of what the previous stock values were, so I can't graph how things change over time. This sounds like it might be too complicated to be built in to excel, so I was wondering if anyone knew how to program this in Visual Basic. Maybe something like this.... If refresh then new cell plus new time stamp. Another possibility would be to have a whole bunch of cells that refresh only once but at longer and longer intervals, e.g.,

[Code]...

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C# - Extracting Strings In .NET?

Nov 26, 2009

I have a string that looks like this:

var expression = @"Args("token1") + Args("token2")";

I want to retrieve a collection of strings that are enclosed in Args("") in the expression.

How would I do this in C# or VB.NET?

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Extracting Multiple Strings From An Xml Document?

May 26, 2010

i have an xml file that i drag drop onto a picture box and i would like to use the information in the xml file to draw a table. the values for the column widths, heights and what goes in which box are in the xml file.the table is split into three sections the title part, a header and then a body.the first challange is finding asking how i can expand what i have to withdraw all the info for the same "sections" of the table as these are contained within different parent nodes.what i have is

Dim reader As Xml.XmlReader
reader = XmlReader.Create(dragFil(0))
reader.ReadToFollowing("tgroup")[code]....

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Create A Jagged Array And Put Some Strings Into Its Cells?

Jan 21, 2010

I have a question with jagged array, every element can contain strings, be empty or be nothing.

I would like to create a jagged array and put some strings into its cells.

Public Sub S1 ()
Dim MyArr(7)() As String ' OK
MyArr(1) = New String(8) {} ' OK the second cell contains 9 subcells

[Code].....

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Extracting Data From Listbox To Excel File?

Jun 6, 2011

i am a newbie to visual basic .neti have a vb.net database that has 3 textboxs that go to a listbox and also store in a database.i was wondering if i can extract the data from the listbox to excel like a csv file or something along them lines s i have no clue on how to do this.

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Extracting Embedded File (OLE Object) From Excel Document?

Jan 7, 2010

My application needs to extract an embedded file (OLE object) from an excel 2003 document to a file on disk. This file can be any type, not only an Office document. Searching in the web it seems to be possible by copying OLE object to Clipboard and later copying (binary) it to a file (¿perhaps using MemoryStream and FileStream?), but I see no working code about this.

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Excel Cells May Contain A Number Ex '100'

Jul 29, 2010

I have this code below looping through excel cells and drawing borders... the problem is that these excel cells may contain a number ex. "100", some have text like "hello" and some cells contain a zero the code is supposed to loop through until it finds a BLANK cell with nothing in it.however it stops at the first cell containing a 0. [code]

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Trim Cells In Excel?

Nov 9, 2008

I have a spreadsheet that I need to trim 3 columns. I have scoured the net but can't find anything that I've been able to use to trim each cell in columns A, H and I. I am using Excel 2003 and VS2005.

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Extracting Data From Textfile Or Excel Spreadsheet With Multiple Columns?

Mar 30, 2010

currently i need to use 4 different texts files in order to read data and run my program, is there any way that i can just use 1 text file or 1 excel spreadshee

Dim File1 As New System.IO.StreamReader("C:Documents and SettingsUserDesktopWindDirectionLanding.txt") 'Calling out the file.
Dim File2 As New System.IO.StreamReader("C:Documents and

[code].....

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ASP.NET Export To Excel - Lock Cells?

May 4, 2011

I'd like to export a table I have on my webpage to an Excel file and lock some cells in the new file. Here is my current code:

Protected Sub btnExportToExcel_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnExportToExcel.Click
Response.Clear()

[Code].....

This code works in generating the Excel file. I've searched for an was unable to find much for a solution to lock cells in the new file.

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Comparing Cells In Two Excel Spreadsheets?

Jan 24, 2011

I am trying to write code that will compare the information in all row(one column) in the two spreadsheets and if they are not the same update another column on the row with a difference with Updated. but i am getting this error

countExcel = xlsSheet.UsedRange.Count
first_index = 1
last_index = countExcel

[code]....

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Copy Cells From Excel To Outlook - VB6?

Jun 21, 2011

I'm trying to copy cells from Excel to a new mail message in Outlook. Excel and Outlook both open fine but it doesn't copy.

Im using the following code:

Dim content = xlWorkSheet.Range("A1:C21").Copy()
Dim oApp As Outlook._Application
oApp = New Outlook.Application()

[Code]....

This does not copy the cells. It simply displays an email with a body that says "true".

I am using the excel sheet to do other things which work fine, so the excel code works. Just having trouble copying the cells.

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Disable Excel Format Cells?

Jul 13, 2011

I has some vb.net code to export some data into Excel format. I had set one of the column to date format. But I want to avoid user from changing the format because they can easily right click the Excel cells, and choose Format Cells. How can I disable this option in Excel via vb.net code so that user will always follow my format?

worksheet.Cells(intCnt, 19).NumberFormat = "dd/MM/yyyy;@"
worksheet.Cells(intCnt, 19).Style.Locked = True

I use the above code to locked it but seems to be not working.

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Exporting Data To Excel Cells?

Feb 18, 2011

How can I update an existing excel file? I want to change certain values already present in the excel file and I am using

Dim excelConnectionString As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:Test.xlsx;Extended Properties=""Excel 12.0 Xml;HRD=No"""
Dim excelConnection As New OleDbConnection(excelConnectionString)

[Code]....

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Formatting Excel Worksheet Cells?

Jan 26, 2011

suppose I have an excel worksheet, I want to paint the particular cells with gray color then save it as a new file.

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Getting The Text Value Of Cells In An Excel (*.xls) File?

Nov 6, 2009

I'm trying to write an import function for getting data out of an excel file. How I currently do it is as follows:

Private Sub ReadExcel(ByVal childform As PhoneDiag.frmData, ByVal FileName As String)

Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook[code]....

From what I can gather, it more than likely comes down to this line:

Dim Obj = CType(therange.Cells(rCnt, cCnt), Excel.Range)

All I need is the text from the cells, not to create an object for each cell (and then not send them to garbage collection).Is there an easier way of just getting the text? Ideally, if I can get a method for getting the text values of the cell, I'd like to get the multiple rowArray()'s added to a master array and update the program's values later.

EDIT:I also realize that I have two options if I were to create a master array, say mArr, to hold all the data.Would it be better performance-wise to have mArr to be large and the sub arrays small, or mArr to be small and the sub arrays to hold more of the information?I ask because the files that will be imported will have more rows than columns, so I was wondering if there was any "set" way of doing it.

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How To Make Bold Cells In Excel Through Vb

Dec 2, 2010

vb.net
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook

[code].....

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Merge Excel Cells Via .NET Without Asking When Every Cell Has A Value?

Aug 17, 2011

I have a VB.NET website and I am organizing some data in excel file. I need to merge cells which have same data in excel but everytime I try to this operation, program stops and shows this notification: I don't want to see it and I want program to continue without asking. Is it possible,

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Read Values From Excel Cells

Apr 28, 2009

[code]i need to read data from specific cells and assign them to other cells.

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VS 2010 How Bold Cells In Excel Through Vb

Jan 27, 2012

vb.net
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
Dim xlWorkSheet As Excel.Worksheet

[code]....

It loads the data, but there are no headers. I didn't make the code, just copied it using various sources as no one source was able to give me what I wanted.How would I go about adding a header row and making the font bold and increasing the width of each column?

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.net - Remove Borders From Cells In A Range In Excel?

Aug 7, 2011

Aim to Achieve: To get rid of borders if any in the cells of range. I have :

[Code]...

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Combine Text From Two Different Excel Cells Using VB2010?

Feb 16, 2011

All I would like to do concatinate text from two different cells using VB Express 2010. I know there is a =A1&" "&B1 Funtion if I were using excel an thier is also the concatinate function but I do not know how to use these in VB. Below is what I have so far for simply copying one cell to another.

title =
CType(xlsApp.Sheets(Counter1),
Excel.Worksheet).Range("A1")

[code]....

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Excel - How To Get Max Number Of User Filled Cells

Nov 5, 2010

Is there a way to get the max number of user filled cells in an excel sheet without passing a range or iterating through max cells per excel spreadsheet?

Right now I have
Imports Excel = Microsoft.Office.Interop.Excel
Private Sub DoStuff()
Dim oApp As New Excel.Application
Dim oWB As Excel.Workbook
Dim oSheet As Excel.Worksheet
[Code] .....

Right now the oSheet.Cells.Rows.Count = 1048576 and looking through the sheet there is less than 1000 rows of data.

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How To Deal With Excel Cells That Update Info Via The Web

Jul 5, 2009

My main goal is to have an excel spreadsheet that automatically plots the overall success of my stock portfolio over time (% change over time). I've been able to incorporate stock data into my spreadsheet by linking it to the web, but the trouble is the spreadsheet will keep no history of what the previous stock values were, so I can't graph how things change over time. This sounds like it might be too complicated to be built in to excel, so I was wondering if anyone knew how to program this in Visual Basic. Maybe something like this.... If refresh then new cell plus new time stamp. Another possibility would be to have a whole bunch of cells that refresh only once but at longer and longer intervals, e.g.,

Day Stock value
1 refresh at Day 1
2 refresh at Day 2
3 refresh at Day 3
etc..

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Importing Excel That Contains Merge Cells To Datagridview?

Jul 15, 2010

I need to load an EXCEL file into my datagridview. However, my header row contains merge cells, which are not display correctly when loaded into the datagridview. Does anyone knows how to load merge cells correctly into datagridview? When the merge cells are loaded into the datagridview, they are displayed as individual cells instead of merged ones. I am using Microsoft. ACE.OLEDB.12.0 as the provider with Visual Studio 2008 .NET Framwork 3.5, EXCEL 2007.

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