C# SQL 连接 ODBC 或 OLEDB

Question

I'm supporting a legacy C# application which uses ADO.NET for data access. Today one of our client comes up with a different question

Are you using OLEDB or ODBC for data connection?

From my understanding my code is using anyone of this driver but not sure how to confirm. Below is the code sample. I'm using simple SQLConnection class but not sure how to identify the underlying driver. Can someone help?

 System.Data.SqlClient.SqlConnection conn=new System.Data.SqlClient.SqlConnection()
 conn.Open()

Answer 1

Please check this Microsoft documentation: https://docs.microsoft.com/en-us/dotnet/framework/data/adonet/ado-net-code-examples

As you can see, you are using SQLCLient, not OleDb or ODBC.

SQLClient is an specific data provider for SQL Server. Also, you can check this link to learn a bit more about OLE DB and ODBC, and their differences: what is the difference between OLE DB and ODBC data sources?