I want to know why the ACE Driver works in VBA when I want to read an Excel (VBA) file but fails when I try it in Visual Studio Code (C#).
I know that you need to install the Access Runtime to get the ACE Drivers, but this is not possible without Admin rights. I also know that you can use the Interop to read Excel files with C#. I just want to understand why the basically same code in VBA works but doesn't work in C#.
This works in VBA:
connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source= " & filePath & _
"; Extended Properties='Excel 12.0 Xml;HDR=YES';"
connection.Open connString
But this fails in C#:
string connectionString = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileName + #";Extended Properties='Excel 12.0;HDR=Yes;'";
using(OleDbConnection connection = new OleDbConnection(connectionString))
{
connection.Open();
}
When I run the C# I get the The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine error'
I have dealt with this issue before, but would love someone who understands it better to help out. Is it the ActiveX reference in Excel? Can I someone access this without using the Interop?
Related
I leave it to you because I am totally desperate.
I am using Microsoft.Jet.Oledb.4.0 to read my excel files, it works fine on my pc but when I put the application on my server (Windows Server 2012 R2) I get The 'Microsoft.Jet error. OLEDB.4.0 'provider is not registered on the local machine.
By doing research on the Internet I could see that the application had to be build correctly compared to the server but nothing helped I tried in x64 and x86 and I still have the error (i have also tested Jet.Oledb.12.0 but still nothing).
there is my code :
if (Path.GetExtension(path).ToUpper() == ".XLS")
{ //&& Environment.Is64BitOperatingSystem == false) {
//Connectionstring for excel v8.0
Console.WriteLine("Jet.OLEDB.4.0");
connString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + path + ";Extended Properties=Excel 8.0";
}
else
{
//Connectionstring fo excel v12.0
Console.WriteLine("Jet.OLEDB.12.0");
connString = "Provider=Microsoft.Jet.OLEDB.12.0;Data Source=" + path + ";Extended Properties=Excel 12.0";
}
There is my server settings :
There is the installation on the server :
Do you have an idea ? Thank's in adavance ;)
First, change your connection string from Microsoft.Jet.Oledb.4.0 to Microsoft.ACE.OLEDB.12.0 using this link.
Secondly, install Microsoft Access Database Engine 2010 Redistributable.
It‘s an update for the old Microsoft.Jet.Oledb.4.0 driver and used to make the Microsoft.ACE.OLEDB.12.0 connection string works properly.
I have a problem, i deployed my application where i have a connection with Excel file but it doesn't work in other laptop. i have that code :
{ string constr1 = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + m + ";Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1\";";
OleDbConnection con = new OleDbConnection(constr1);}
i wanna just to know witch .dll should i import and includ it in my project that my application connect with Excel file even if Excel is not installed
You'll need to install the Microsoft Access Database Engine and your app should work. This link will get you the Access 2010 version (https://www.microsoft.com/en-ca/download/details.aspx?id=13255) which should work for OLEDB.12.
If you're looking for support for later versions of Excel be aware that MS has altered the names that they use for this set of libraries.
I am having this error when I am trying to import my excel file. I already downloaded the 2007 Office System Driver but still no luck.
It works when I am building it in my VS 2015. Runs in x86. But when I try to run it in my IIS I get the error. Already tried changing my Enable 32-Bit Applications to True but still no joy,
Anyone knows how to do solve this?
OleDbConnection oleConn = new OleDbConnection(#"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=Excel 8.0;Persist Security Info=False");
I am using a excel reader to read contents from the excel,
string connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;
Data Source=" + filePath + ";Extended Properties=Excel 12.0;";
System.Data.OleDb.OleDbConnection ExcelConnection
= new System.Data.OleDb.OleDbConnection(connectionString);
I'm working in VS2010 on a windows 7 ultimate x64 installation.
it works fine in my local machine when I run with VS. When I upload the website in server I get the following error. What should I do here, I have access to the server. Thanks
The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine. Error
: do I have to install any software in my server
Yes. Be aware that there will be different versions dependent on whether you are running on 32 or 64 bit architecture.
The providers can be downloaded here:
http://www.microsoft.com/download/en/details.aspx?id=13255
I want to open an xlsx file, I have tried the below code,but neither does it open nor does it thrown any error.
Can anyone throw any light upon it
string path = "C:\\examples\\file1.xlsx";
string connString = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=\"Excel 12.0 Xml;HDR=YES\";");
OleDbConnection cn = new OleDbConnection(connString);
cn.Open();
OleDbDataAdapter adapter = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", cn);
DataTable dt = new DataTable();
adapter.Fill(dt);
In December 2010 Microsoft (finally!) published a a 64-bit OLEDB driver for CSV and XLSX files.
You'll need the 64-bit Microsoft Access Database Engine 2010 Redistributable. Make sure to download the 64-bit version (AccessDatabaseEngine_X64.exe). You'll need to uninstall any 32-bit Office apps (including Sharepoint Designer!) in order to install it.
If you want CSV, you'll want the Microsoft Access Text Driver (*.txt, *.csv) driver name, but I haven't been able to find a full connection string yet using this driver from OLEDB (although if you have, leave a commend and I'll amend this answer). Note that 64-bit names are different from the 32-bit versions.
For reading XLSX files, use a connection string like this:
"Provider=Microsoft.ACE.OLEDB.12.0;Data Source="
+ FilePath
+ ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\"";
For XLS (pre-2007 Excel) files use a connection string like this:
"Provider=Microsoft.ACE.OLEDB.12.0;Data Source="
+ FilePath
+ ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=2\"";
Many thanks to this blog post and this answer for pointing me in the right direction when I ran into the same problem, and for providing content I adapted to write this answer.
Are you running it on 64 bit Windows? Last time I checked the OLE drivers for Excel workbooks did not work with 64 bit Windows.
SpreadsheetGear for .NET will let you read Excel workbooks from .NET and works with .NET 2.0+ - including 64 bit Windows.
You can see live samples here and download the free trial here.
Disclaimer: I own SpreadsheetGear LLC
See what this does in your connection string:
Extended Properties=\"Excel 8.0;HDR=YES;\" the rest of your connection string is correct I believe.
In addition to Phillip's answer make sure to set the TargetPlatform to x86.