es.styles().ensureInjected();

    // Create a DataGrid.

    /*
     * Set a key provider that provides a unique key for each contact. If key is
     * used to identify contacts when fields (such as the name and address)
     * change.
     */
    dataGrid = new DataGrid&lt;ContactInfo&gt;(ContactDatabase.ContactInfo.KEY_PROVIDER);
    dataGrid.setWidth("100%");

    /*
     * Do not refresh the headers every time the data is updated. The footer
     * depends on the current data, so we do not disable auto