Read CSV File Into Dataset/datatable Without Having Microsoft Excel Installed On That Machine?
Dec 16, 2010
I'm facing a problem reading .csv file into datatable. The machine on which i install my window service ( which reads the csv ) is Windows Server 2008 R2.The error i get is : The 'Microsoft.Jet.Oledb.4.0' provider is not registered on the local machine
Below is the code i use to fill the dataset from .csv file :
string connstr = "Provider=Microsoft.Jet.Oledb.4.0;Data Source=" + System.IO.Path.GetDirectoryName(arrFilesName[iCount].ToString()) + ";Extended Properties = 'text;HDR=YES;FMT=Delimited'";
OleDbConnection conn = new OleDbConnection(connstr);
[code]....
I also looked at the other option i.e. Micorosft.Office.Interop.Excel but that also needs Excel installed.So, I would like to know that, is there a way to read a .csv file without having Microsoft Excel install on the machine.
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Feb 7, 2012
I am uploading an excel file to my app and want to read it. Do I need to have excel loaded to read this?I am getting an error of Object reference not set to an instance of an object.
Public Function GetExcelData(ByVal ExcelFilePath As String) As DataTable
Try
Dim OledbConnectionString As String = String.Empty
[code]....
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Feb 27, 2012
I tried to read excel file using the method i found here [URL] But i get an error on ADODB.Connection saying "Type 'ADODB.Connection' is not defined" in the following code:
Code:
Private Function GetExcelConnection(ByVal Path As String, _
Optional ByVal Headers As Boolean = True) As Connection
Dim strConn As String
[Code]....
Its was used in VB6... do i need to do something special in Visual Studio 2010?
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Jun 24, 2009
open and read and write and save to Excel and word documents in a program if the machine that is being run on does not have either of thies apps installed. Are there files that I can include in my application that it could be worked on in my application and not need word or excel?
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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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Apr 19, 2012
Question: How do I programmatically determine which provider to use (Microsoft.Jet.OLEDB.4.0 vs Microsoft.ACE.OLEDB.12.0) when my app runs as a 32-bit process on a machine with Office x64 installed?
I'm developing a VB.net WinForms app in VS 2010 and targeting both x86 and x64.The app processes data from xls, xlsx, mdb and accdb files using System.Data.OleDb:Dim oConn As OleDbConnection = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=...")
The x64 version of the program works as expected. The x86 version works as expected on a system with Office x86.When I run the x86 version on a machine with Office 2010 x64, I get the following exception when trying to open a connection:
The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine.I believe this is because I'm running Office 2010 x64 so the x86 data access components are not installed.I can get it to work for Office 2003 files (*.mdb and *.xls) by changing the provider to Microsoft.Jet.OLEDB.4.0.
How do I figure out which provider to use when running as a 32-bit process on a machine with Office x64 installed?Ideally, I'd like a function:If ProviderIsAvailableFor("Microsoft.ACE.OLEDB.12.0") Then
Else If ProviderIsAvailableFor("Microsoft.JET.OLEDB.4.0") Then
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Oct 1, 2010
I have a software that writes data to Excel sheet. I'm using Microsoft Excel 11.0 Object Library for this. Everything is working fine so far, but apparently the drivers require Microsoft Office installed onto the computer.
Is there a way to write data to Excel format without having Microsoft Office installed?
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Jul 19, 2010
I installed VB Express 2008 on my machine and it went without a redistributable file. It got download during the install. Anyone knows where I can download the redsitributable file from, so I can give it to my students?
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Jun 30, 2011
I am generating PDF file using Crystal report ExportToDisk method in VB.NET 3.5.
Locally and on integration environment generated PDF file is much readable i.e.font size is good. But the PDF file generated on production environment is different in formatting.The lines are wrapping and font size is also little small. There is not Adobe installed on integration.
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Mar 5, 2012
I have a project that has a need to display a Excel file in second window, but because other controls are needed, simply launching excel is not sufficient. Right now I do not know if the target machines have excel installed but I know with certainty that if they do it would be 2010, is there any method or library that allows you frame your own form around an excel window?
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Oct 7, 2011
I need to export Chart(image) and grid (tabular) row data into excel file. I can not use automation because Office tools are not installed in my server. I've found a bunch of free/proprietary tools like:
NPOI
MyXLS
ExcelWriter (softartisans)
JetCell (DevTrio)
Aspose.Cells (Aspose)
But I do not know which one is better for my needs. I need to export not only grid row data but also Chart (image), thats why I am thinking about.
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Feb 12, 2009
Is there a way in VB .NET to create an Excel file without having Excel installed?
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Oct 6, 2009
I'm trying to upgrade a VB6 app to VB 2008. I have read the article in the tutors corner about automating Excel from VB but I cannot get it to work. Heres what I have done:
1) set a reference to the Microsoft Excel 12.0 Object Library
2) Added "Imports Excel = Microsoft.Office.Interop.Excel" to the top of the module
3) in a routine I have added: Dim X As New Excel.Application Here's where I get an error: Error 75 'Application' is ambiguous in the namespace 'Microsoft.Office.Interop.Excel'.
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Feb 25, 2010
I need to create an excel file from the database records. I fetched and put the data in an excel file and tried to save that file as follows.
[Code]...
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Oct 14, 2010
I have managed to read a sheet from a excel workbook and pop it into a datatable.
Public Function GetSheet(ByVal SheetName As String) As DataTable
Try
MyDataTable.Clear()
[Code]....
My understanding is that if I make changes in the datagridview it is reflected in the datatable.
So now I want to write the updated datatable back to the appropriate worksheet.
I have read about "insert into" or "update" etc but it is very specific columns and rows.
One other thing, when I set the datagridview datasource as the datatable I get about 9 other columns such as TABLE_SCHEMA TABLE_TYPE etc. Any pointers wher thay are coming from and maybe how to get rid ofthem?
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Jul 23, 2010
So I have this error.
[Code]...
So I'm guessing it has something to do with the fact that I don't have office loaded on my computer. Now I have another laptop, with office that I loaded this project on, and it works fine. So do I have to load office on this computer, or can I just reference something?
[Code]...
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Mar 14, 2010
I have a windows form and I am attempting to create an excel file from a datatable that has already been created and i'm hitting a snag - the error is: The ':' character, hexadecimal value 0x3A, cannot be included in a name."I have a button to start the Export process, here's the
'here's all my imports for the form
Imports DocumentFormat.OpenXml.Packaging
Imports System.Text
[code]....
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Mar 6, 2012
why this code doesn't work?
Dim s As String
For Each s In PrintDocument1.PrinterSettings.InstalledPrinters.ToString
MsgBox(s)
Next
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Apr 15, 2011
what happens if I use a font in my WinForms app that isn't available on the target machine - does it use a font in the same family or just Sans Serif or something else?
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Aug 17, 2009
How do I save my dataset ,that is being filled in runtime, to a Microsoft Access database file (.mdb)?
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Dec 18, 2009
i dunno if there is away to put an microsoft Exel file in to VB
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May 20, 2009
I am using mshtml to parse HTML in my ASP.NET-MVC application. Works great on my development machine, which has VS2008 Professional installed. Works great on my staging machine, which has VS Express 2008/WebDev installed. But it throws a FileNotFoundException when trying to load the COM object on the production server, which has no versions of Visual Studio.
Exception type: FileNotFoundException
Exception message: Could not load file or assembly
'Microsoft.mshtml, Version=7.0.3300.0,
[Code].....
I don't want to install Visual Studio on the production box. I have read a suggestion that running C:Program filesCommon FilesMerge modulesvs_piaredist.exe solves this problem but this directory does not exist on my production box. How can I use mshtml on the production machine?
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Feb 12, 2010
I'm looking on the Internet but not found anything about how to detect what the frameworks are installed. Someone I can provide that code to VB. Net? TcoUpLoad (work with Vb6 and VbNet)
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Mar 17, 2010
We have a certain application installed on a single machine. I would like to enable/disable a button based on the existence of this application. Is there a way to check for its existence from asp.net?
the app is currently on an XP machine, but want to code for Win7 as well. VS2008 3.51. Asp.net
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Jan 16, 2012
I have a Windows application written in VB.NET in Visual Studio 2005.The application opens a form to perform some measurements and to present data.
The application works fine when i run it om my "development computer" in debug mode. Also when i install in and run it on my computer.
But when i install it on the customer computer and run it i get a form that is smaller in size (not as wide as in my computer) and the result is that lots of graphics components are located outside the form and therefore not availible for the user.
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Oct 29, 2010
I have create Office Excel application in my machine(XP). and i have placed the application in windows server 2008 giving the following error.
Microsoft Office Excel cannot access the file 'serverInput.xls'. There are several possible reasons:
The file name or path does not exist.The file is being used by another program.The workbook you are trying to save has the same name as a currently open workbook.
both client and server systems installed office 2007 and added reference microsoftexcellibrary 12.0
created assembly for the application and calling the code from the form.
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Oct 31, 2010
I'm creating a WindowsForm application and I need a code to check target's machine installed version of DirectX.If the reg key doesn't match with provided one >>> load the form and launch the DX installer "redistdirectx_Jun2010_redistDXSETUP.exe"If the reg key matches with the provided one >>> launch other application "Setup.exe"
Provided version:
[HKEY_LOCAL_MACHINESOFTWAREMicrosoftDirectX]
"Version"="4.09.00.0904"
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May 3, 2009
I am developing a software and i need to make it save a text document, I can make it save it by writing the path of my document on my machine but it wont work on other machines when installed, how can I make it do this?
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Apr 16, 2010
I have a program that reads data from excel.
I use:Imports Microsoft.Office.Interop as well as a Reference from the "COM" tab called "Microsoft Excel 11.0 Object Library"
I built my program then copied the .exe from the inDebug folder to a location on my company's server. I then double clicked the .exe and it ran as I expected it would.My boss then tried (from another computer) and he gets this error:See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
[Code]...
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Jan 3, 2012
I'm looking at an old web app I wrote and it is taking about an hour to read 4500 records from a DataTable so it can write them to a CSV file.
The DataTable contains... 376 columns
At least, I think that's what Excel's NL column converts to. I just looked up the column count now and had no idea there were so many. Our software vendor hasn't realized the value of dynamic sql statements for this process, so every software "upgrade" just keeps adding more columns rather than only selecting the ones needed. I cannot alter the SQL statement that generates the data
Depending on the data type, the data needs to be formatted in a specific format Data does contains special characters, such as commas The slow part is reading the data. Getting the data from the SQL server and writing it to a CSV is fast.
Here's the code. Forgive the mess, I wrote it back when I didn't know what I was doing and when I still was working in VB
Function ReadDataTableForCSV(dt as DataTable)
Dim sb = New StringBuilder()
Dim dataTypes As New Dictionary(Of String, Integer)
[code]....
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