>That's right...if you set up your business object as demonstrated in your code, it always instantiates your typed DataSet rather than an instance of mmDataSet...and then you don't have to use FillDataSet().

Just one problem...

The code sample you gave earlier in this thread (and therefore my class as shown above) won't compile because there is no overload of GetDataSet that takes zero parameters.

Here's the code you gave:

public DataSet GetVendors()
{
    // Pass whatever parameters you need here, or call FillDataSet 
    // if you have an existing ds you want to fill
    return this.GetDataSet(); 
}

So, sorry to be slow on the uptake, but it still seems to me that there is no way to have MM.NET use IDataAdapter.SelectCommand to fill a typed dataset. Both GetDataSet and FillDataSet require either an IDbCommand or a SQL statement in a string, and if you provide one of those, MM.NET will use that rather than IDataAdapter.SelectCommand to fill the typed dataset.