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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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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Dec 5, 2010
So, I am already able to successfully import an excel file to sql server through my vb application BUT I want to automatically change a value in a certain column to another. To expand on this, my excel file has a column that lists test titles such as "WCOB 1120 Access Test". I want to have each specific test title changed to a number. So, "WCOB 1120 Access Test" would need to be changed to '1' before it is added into my database.
Public Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim myPath As String = sFilePath & sFileName
Dim ExcelConnection As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source='" [code].....
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Mar 31, 2011
I have a DataTable and want to connect the cells of one of its columns to cells in some other DataTables.
For example:
DataTable1.Rows(0).Item(2) is connected to DataTable2.Rows(4).Item(6)
DataTable1.Rows(1).Item(2) is connected to DataTable4.Rows(2).Item(3)
DataTable1.Rows(2).Item(2) is connected to DataTable3.Rows(11).Item(4)
...
How can I do this?
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Aug 5, 2010
I have a mature VB6 program that depends heavily on flexgrids for the display.It appears that DataGrids are somewhat of a replacement for flexgrid?I need to update individual cells over and over and I don't see how to address a single cell. Appears to me that most samples are tied to a database which I don't have.If I set up a datagrid that is say 3x3, how do I read and write from and to say the center cell?
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Aug 16, 2011
I want my users to enter some data into a bound DataGridView (dgv) and when done to have the program fill in some columns (hidden key) and to populate some cells in the same row according to the data entered - like max of several cells.
Can I use DataGridView RowValidating to update cells? Or is it just a Cancel or not issue?
What would be the correct way for me to fill in hidden key information and to calculate some cell values?
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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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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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Oct 29, 2011
The code below updates all cells in a DataGridView column to a value from a textbox. This code works in that all cells in the desired column are updated on screen. The DGC is bound to a dataset. The problem is that when I call the dataset .Update method, sometimes the first row (row 0) does not get updated. I have run SQL profiler and can see that no SQL update command is submitted for the first row. The first row only gets skipped the first time the update is run after launching the app. Subsequent updates run for all rows, until the app is re-launched.
I have verified the row state is Unchanged with: Msgbox(DataGridView1.Rows(r).State.ToString).
The 2 commented lines below are other things I have tried that still cause the first row to be skipped.
Private Sub btnUpdateAll_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdateAll.Click
If IsNumeric(Me.tbUpdateAll.Text) Then
[Code]....
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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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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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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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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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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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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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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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Dec 2, 2010
vb.net
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
[code].....
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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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Apr 28, 2009
[code]i need to read data from specific cells and assign them to other cells.
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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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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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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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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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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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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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Jan 28, 2012
Merge Cells in Excel Export From GridView?
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Jun 21, 2011
I've an excel sheet which is populated with thousands of rows of data, is there a way in vb.net I can pick out only selected cells/rows without having to go through every row?
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Nov 11, 2011
I created this code to export from DGV to Excel and it worked with me. I tried to print the data from DGV to specific cells in worksheet but I don't know.
[Code]....
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Dec 20, 2009
I need to be able to take numbers from multiple textboxes and input them into certain cells in Excel. Also need to do the opposite (Read numbers from Excel and put them into textboxes.)
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Jan 22, 2009
I wanna read all cells of all sheets/pages in my excel file and just show the text content of each cell. [code]
1. How can I read cells inside the While?
2. My select command only selects Sheet1, how can I select ALL sheets?
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