Microsoft Access Database Engine ((top)) -

using (OleDbConnection conn = new OleDbConnection(connString))

$conn = New-Object System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Data\Customers.accdb") $conn.Open() $cmd = $conn.CreateCommand() $cmd.CommandText = "SELECT * FROM Orders WHERE OrderDate > #1/1/2023#" $reader = $cmd.ExecuteReader() while ($reader.Read()) Write-Host $reader["OrderID"]

Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Data\CSVFiles\;Extended Properties="text;HDR=Yes;FMT=Delimited"; using System.Data.OleDb; string connString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Data\Sales.xlsx;Extended Properties='Excel 12.0 Xml;HDR=YES;'";

Use the /quiet switch with the AccessDatabaseEngine.exe installer to force installation, or install using the command line:

conn.Open(); OleDbCommand cmd = new OleDbCommand("SELECT [Region], SUM([Amount]) FROM [Sheet1$] GROUP BY [Region]", conn); OleDbDataReader reader = cmd.ExecuteReader(); while (reader.Read())

AccessDatabaseEngine_x64.exe /quiet For advanced scenarios requiring both bitnesses on the same machine (e.g., a development workstation), you must install the 64-bit ACE first, then the 32-bit ACE using the switch, or use the "ACE Redistributable for Microsoft Office" specific version. How to Use It (Code Examples) 1. Connection Strings (Classic OLEDB) The engine surfaces as an OLE DB provider ( Microsoft.ACE.OLEDB.12.0 or 16.0 ).

Console.WriteLine($"reader[0]: reader[1]");