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    copied!<p>Since <code>DataGrid</code> doesn't expose it's <code>ScrollPanel</code>, create an inner class that extends <code>DataGrid</code> and provides a reference to the <code>ScrollPanel</code>:</p> <pre class="lang-java prettyprint-override"><code>private static class MyDataGrid&lt;T&gt; extends DataGrid { public ScrollPanel getScrollPanel() { HeaderPanel header = (HeaderPanel) getWidget(); return (ScrollPanel) header.getContentWidget(); } } </code></pre> <p>Initialize the variables needed for this to work:</p> <pre class="lang-java prettyprint-override"><code>private MyDataGrid&lt;MyDataType&gt; myDataGrid; private int incrementSize = 20; private int lastScrollPos = 0; </code></pre> <p>In the constructor, create the grid:</p> <pre class="lang-java prettyprint-override"><code>myDataGrid = new MyDataGrid&lt;MyDataType&gt;(); </code></pre> <p>Then add a ScrollHandler, using the getScrollPanel() reference that was just created:</p> <pre class="lang-java prettyprint-override"><code>myDataGrid.getScrollPanel().addScrollHandler(new ScrollHandler(){ @Override public void onScroll(ScrollEvent event) { int oldScrollPos = lastScrollPos; lastScrollPos = myDataGrid.getScrollPanel().getVerticalScrollPosition(); // If scrolling up, ignore the event. if (oldScrollPos &gt;= lastScrollPos) { return; } //Height of grid contents (including outside the viewable area) - height of the scroll panel int maxScrollTop = myDataGrid.getScrollPanel().getWidget().getOffsetHeight() - myDataGrid.getScrollPanel().getOffsetHeight(); if(lastScrollPos &gt;= maxScrollTop) { myDataGrid.setVisibleRange(0,myDataGrid.getVisibleRange().getLength()+incrementSize); } } }); </code></pre>
 

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