The code is

public void ConnectToAccess()
{
System.Data.OleDb.OleDbConnection conn = new
System.Data.OleDb.OleDbConnection();
database. conn.ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0; Data source= @"path \AccessFile.mdb";
try
{
conn.Open();
// Insert code to process data.
}
catch (Exception caught)
{
MessageBox.Show(caught.Message);
}
finally
{
conn.Close();
}
}

Notice this line
-> database. conn.ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0; Data source= @"path \AccessFile.mdb";

Should be
database. conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0; Data source=AccessFile.mdb";



Other Connection String Sample.

Visual Basic]
Public Sub CreateSqlConnection()
Dim myConnection As New SqlConnection()
myConnection.ConnectionString = "Persist Security Info=False;Integrated Security=SSPI;database=northwind;server=mySQLServer;Connect Timeout=30"
myConnection.Open()
End Sub 'CreateSqlConnection

[C#]
public void CreateSqlConnection()
{
SqlConnection myConnection = new SqlConnection();
myConnection.ConnectionString = "Persist Security Info=False;Integrated Security=SSPI;database=northwind;server=mySQLServer;Connect Timeout=30";
myConnection.Open();
}

[C++]
public:
void CreateSqlConnection()
{
SqlConnection* myConnection = new SqlConnection();
myConnection->ConnectionString = S"Persist Security Info=False;Integrated Security=SSPI;database=northwind;server=mySQLServer;Connect Timeout=30";
myConnection->Open();
}