Question

ok so i have a Class A that implements method M1 that takes an excel path and a sheet name, and returns an OledbDataReader .
Class B calls the method M1 , does some stuff with the OledbDataReader, then closes the OledbDataReader. but how can i Close The OLEDBConnection object? i dont have access to it because M1 in Class A opened the connection ! any ideas? thank youu

Answer 1

You can remodel your class A like this:

class HelperClass : IDisposable
{
    private bool _disposed;
    private OleDbConnection _connection;

    public HelperClass()
    {
        _connection = << open the conection >>;
    }

    public OledbDataReader GetOpenedReader()
    {
        return << open your reader here with the connection >>;
    }

    public void Dispose()
    {
        if (!_disposed)
        {
            _disposed = true;

            _connection.Dispose();
        }
    }
}

Then it’s the resposibility of the calling class to use your class like this:

using (var helperClass = new HelperClass())
{
    // call the method that opens the reader and uses it
}