DataSet ds = Api.Zselect(MercatorUi.Globals.RepData, "select top 10 c_id,c_nom from CLI\r\nselect top 10 f_id,f_nom from FOU");
if (ds != null)
{
    MercatorUi._Divers.ViewData(ds, false, false, "Clients & Fournisseurs", (dataSetViewerForm) =>
    {
        dataSetViewerForm.TabControl.TabPages[0].Text = "Clients";
        dataSetViewerForm.TabControl.TabPages[1].Text = "Fournisseurs";
        EventHandler fullInitializedHandler = null;
        fullInitializedHandler = (s2, e2) =>
        {
            dataSetViewerForm.FullInitialized -= fullInitializedHandler;
            foreach (MercatorUi.GridPro.DataGridViewXPro grid in dataSetViewerForm.Grids)
            {
                grid.AutoFit();
            }
        };
        dataSetViewerForm.FullInitialized += fullInitializedHandler;
    });
}