private void buttonLogin_Click(object sender, EventArgs e) { if (this._DataControl.Visible) { string sKey = this._DataControl.GetSelectedDatabaseSet(); mmAppBase.DatabaseMgr.DatabaseSetKey = sKey; } }No matter which option I select in the mmOptionsDataControl the value returned by GetSelectedDatabaseSet() is always the value of the DatabaseSetDefault key as set up in the app.config file.