Reading Excel From VB 2008 - How To Determine A Sheet Has Nothing In It
Dec 2, 2009
I have Visual Studio 2008/VB application that opens Excel workbooks, reads all the sheets, and writes some data to a SQL database. I need an easy way to determine if a sheet has any data on it. By default most books has three sheets (Sheet1, Sheet2, Sheet3) and usually, but not always, my books have data only on sheet1. But i need to look at alal sheets to check for the existence of data. I know I can do a nested for loop from 1 to columns.count and rows.count, but that would take a good bit of time since those numbers usually are something like 256 and 65K.
Is ther some easy way to determine if there is any data on the sheet? If there is, is there an easy way to find the "first" cell with data in it?
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Sep 14, 2009
I have a little problem and i don't know e an excel sheet with with over 4000 rows and i need to go through that sheet and look at the length of each 1 cell and get the amount of characters in there and put that into another cell like below
[fixed]1
New cell10
[code].....
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Dec 2, 2009
Exception While Reading Excel Sheet Drop Down Value...
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Jun 24, 2011
I want to read an Excel sheet into a DataTable using an OleDbDataAdapter, however, I only want a section of the spreadsheet (the part that 'looks like a database').[code]
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Mar 29, 2012
I have some trouble with opening a excel sheet and getting some data out of it.
I want my program to have a button, when pressed, gives a "select excel file" popup and then load the data from some cells into my sql database.
So, when opening a excel file the program should get the data from cell D3 to D8 and put that into the sql database.
I now have the following, but that will only open the excel file.
Public Class Form1
Dim oConn As ADODB.Connection
Private Sub ConnectDB()
[Code]....
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Dec 19, 2011
I have to provide an Excel file as an output. I have to color some of lines and make them bold.The input is based on a dynamic list (in memory) and it also could be based on CSV file that I'm already provide today (based on the same dynamic list).I'm wondering what would be the most efficient way (in terms of performance) in order to provide the colored Excel output?Should I export directly from dynamic list into Excel - or - Should I export from CSV into Excel ?
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Mar 22, 2011
im looking for the method how can i copy from original sheet to my new sheet.
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Dec 23, 2009
[code] objExcelAppDataSheet is the excel application's object and strTemplatePath is the path of the excel file.This excel file is like a template that i am using in my application. In this file some cells are merged. After copying to the new sheet the formatting of the sheet does not remain same. Columns sizes are changing. Why this problems occurs? Is this MS office versions issue??
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May 8, 2010
Do you know how can i import a sheet from Excel to Visual Basic 2008, and then save the informations in Access? I know how to save the informations in Access, but i don't know how to import from Excel.
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Mar 3, 2009
I am trying to create a small program to use at my company. It will be used to enter in any customer information on one tab and then the next tab will be used to enter in all the products that we are returning. I would like to use an excel sheet (if there's a better way let me know) to be able to enter in multiple parts but I can't figure out how to get an excel sheet or some kind of editable table onto my form
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Jan 10, 2009
I'm migrating to vb.net 2008 from long experience of vb6. I managed to create an Excel Sheet as an object, write data and save. How though, do I load an already created Excel file? The following code does a save, but what do I need to load a file?
ExcelSheet.SaveAs("C:UsersKochanskiDocumentsVisual Studio 2008ProjectsExcel TricksTEST.XLS")
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Aug 27, 2010
I'm trying to build an application wich shows some info about a specific user. The info is stored in an Excell sheet.
What I want to do is this: I'll have the user fill a field with in example the logon name. Now I want the application to search the Excell sheet for that record and list the info into seperate fields on my form.
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Feb 24, 2009
I got the following code snippet, but it shows errors in 3 places, the error is type "item name" not defined. I underlined and made bold where the errors show up below'Firstly retrieve data from Access database
Dim con As OleDb.OleDbConnection = New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=E:myDB.mdb")
con.Open()
[Code]....
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Jul 21, 2010
importing excel sheet data into a sql table(MS SQL 2008) via a datagrid and would like receive as much advise as possible, in order to learn more on this...
Dim DtSet As System.Data.DataSet
Dim MyCommand As System.Data.OleDb.OleDbDataAdapter
MyConnection = New
[Code]....
I am using this to connect my datagrid to the excel sheet and able to view the data sheet, but from here on.. I am not very sure on how to go about to transferring the excelsheet into a sql table.
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Jan 22, 2011
I am trying to figure out how to dispay and print certain cells from an excel sheet into a vb program. i am not sure on where to start. It is a large spreadsheet but i need the ability to call a certain persons name and the information for that person then print it out.
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Jun 15, 2010
my VB.Net desktop app writes to an Excel file. I need to set the style to a row. I can read a style of one row, but am unable to set the style in another.
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Sep 17, 2010
I'm creating an application that will export several datatables into a single Excelspreadsheet, but on different sheet names. How can I do that?
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Mar 18, 2009
I am working on an excel add-in. Currently I have a couple of forms that grabs info from excel, processes and pastes data back into excel.My problem occurs after my form closes (this leaves excel and one other MDI form still open). I need my excel sheet to come to the front for users to view and edit. My MDI form just stays on top even though I just edited the excel doc. I have tried everything I can think of using:
.visible
.activesheet etc.
Here is my latest:
[code]....
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Dec 6, 2010
I'm trying to read rows in a DataGridView and the following error is thrown up. The DataGridView was filled from an Excel Sheet with a column of currency. Ideally when the For Next loop finds a cell it doesn't like, I want to to ignore and resume the loop. The error message is: Object reference not set to an instance of an object
HTML
Try
For Each row As DataGridViewRow In Me.DataGridView2.Rows
FirstString = row.Cells(0).Value.ToString
[CODE]...
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Feb 17, 2009
Basically, i have to write a small application that just writes in certain cells of a set page of an excel sheet, the sheet will always be the same layout.
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Aug 6, 2010
I am trying to create double and number format cells in excel using NPOI library. I used code like Dim cell As HSSFCell = row.CreateCell(j) cell.SetCellValue(Double.Parse(dr(col).ToString)) In excel numbers are aligning right but when I check format it is showing in "General" then I changed my code to like below
[Code]...
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May 28, 2007
How to Eliminate duplicates in excel using macros and place it in another excel sheet The duplicate record must also be transferred.
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May 20, 2011
So I've got this Excel sheet of employees which have all the information about them. I'm trying to import this info into AD, but in order to do that I need to get the username for these users as well. And I would like vba code or vb.net code that basically takes the value of every row in column D and looks for it in AD and returns the username and adds it to column A. Would something like this be possible?
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Oct 28, 2009
i need to generate an excel sheet from an excel template which contains drop down lists. I need to use the template and populate the with data from datbase and select the appropriate value from the drop down lists and generate the new excel sheet.
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Oct 6, 2010
I want to read cell's in a excel file but he reads in sheet 2 (PARTS) instead of 1 (MASTER)
How do I read in sheet 1 (MASTER) What I see if I open the excel file he has been saved while sheet 2 is visible
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Aug 30, 2010
I have a .csv file (created by external program). In my vb.net application I want to read the last cell value. External program updates the last cell value every 3 sec.For this I use the below code. But cpu usage increases (because timer event opens&closes new excel sheet every second)I was successfully doing this with vb6 without any problem, but with vb.net I'm stuck.
[Code]...
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Mar 10, 2008
I'm a new VB programmer, although I have a decent background in java.Anyways, I'm learning VB and I'm trying to read data from an Excel file using VB 2008 and can't figure out how to accomplish this. I can't seem to get any data from the Excel spreadsheet to display in a simple Windows form. Also, there's a decent amount of data in the spreadsheet so I was wondering if it makes sense to just read data as needed from the excel spreadsheet or if there was some type of data structure that I could import the entire Excel spreadsheet into and do my analysis from there.
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Mar 4, 2010
I just tried to read data from an excel sheet. I just found some code on net. But it is not working for me. I'm unable to debug, since i don't know how to make use of the ADO.Net [Code]
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Aug 29, 2010
Using vb.net 2008 to create an Excel ss. I am trying to add a new sheet and it does but it puts it out of order. It puts it as the first sheet. I need it as the last one ( furthest to the right).
Code:
With xlWorkBook
.Sheets("Sheet1").Select()
.Sheets("Sheet1").Name = "config"
[Code]....
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Jan 15, 2009
I have created a connection to an excel file. This is the code i created to select the data in the excel. But i want to make the [sheet1$] to be dynamic, which means it will get the sheet name depending on what is in the excel workbook. This workbook has only one sheet. This is to make sure that there will be no error when the sheet names are different. [code]
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