Как-то примерно так:
\Classes\EcoResProductPerCompanyLPInteraction\initialized
X++:
public void initialized()
{
FormDataSource fds;
FormRun fr;
FormGridControl fgc;
super();
fds = this.listPage().activeRecord(querydatasourcestr(EcoResProductPerCompanyListPage, InventTable)).dataSource();
fr = fds.formRun();
fgc = fr.design().controlName(formcontrolstr(EcoResProductPerCompanyListPage, ListPageGrid));
}