In the sprawling ecosystem of Microsoft data technologies, certain components work so effectively behind the scenes that they often go unnoticed until something breaks. The Microsoft Access Database Engine (formerly known as the Jet Red engine, and later the Access Connectivity Engine or ACE) is precisely such a component.
Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Data\MyDatabase.accdb;Persist Security Info=False; microsoft access database engine
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 ). In the sprawling ecosystem of Microsoft data technologies,
conn.Open(); OleDbCommand cmd = new OleDbCommand("SELECT [Region], SUM([Amount]) FROM [Sheet1$] GROUP BY [Region]", conn); OleDbDataReader reader = cmd.ExecuteReader(); while (reader.Read()) How to Use It (Code Examples) 1