DbConnection. Open Method
Opens a database connection with the property settings specified by the ConnectionString.
public: virtual void Open();
public void Open ();
override this.Open : unit -> unit
Public Sub Open ()
The connection is already open.
A connection-level error occurred while opening the connection.
The OleDbConnection draws an open connection from the connection pool if one is available. Otherwise, it establishes a new connection to the data source. You can open more than one DataReader on a single OleDbConnection. If the OLEDB provider you use does not support more than one active DataReader on a single connection, the OLEDB provider implicitly opens an additional connection for each.