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    <p>First you should make sure that your RPC returns the appropriate List of hastaGrid objects - and please do capitalize the class name :) I use the <code>AsyncDataProvider</code> model quite a lot with various <code>DataGrid</code> implementations and create an implementing class somewhat like the following: </p> <pre><code>public class MyProvider extends AsyncDataProvider&lt;MyModelObject&gt; implements AsyncCallback&lt;List&lt;MyModelObject&gt;&gt; { static int PAGESIZE = 50; List&lt;MyModelObject&gt; cache = new ArrayList&lt;MyModelObject&gt;(); @Override protected void onRangeChanged(HasData&lt;MyModelObject&gt; display) { final Range range = display.getVisibleRange(); int start = range.getStart(); int end = start + range.getLength(); if (start &gt;= cache.size() - 1) { lastVisible = cache.size() - 1; gwtService.fetchRowsFromDbase(this); return; } List&lt;MyModelObject&gt; dataInRange = cache.isEmpty() ? new ArrayList&lt;MyModelObject&gt;() : cache.subList(start, end &gt;= cache.size() ? (cache.size()) : end); updateRowData(start, dataInRange); } public void onFailure(Throwable caught) { Window.alert(caught.getMessage()); } public void onSuccess(List&lt;MyModelObject&gt; result) { if (result.isEmpty()) { //display a warning return; } for (MyModelObject a : result) { if (cache.indexOf(a) == -1) cache.add(a); } updateRowData(cache.indexOf(result.get(0)), result); updateRowCount(cache.size(), result.size() &lt; PAGESIZE); tab.setPageSize(PAGESIZE); tab.setPageStart(lastVisible); MyModelObject last = cache.get(cache.size() - 1); orderOffset = last.getId(); } public List&lt;MyModelObject&gt; getCache() { return cache; } } </code></pre> <p>In your DataGrid initalization code you put:</p> <pre><code>MyProvider pr = new MyProvider(); pr.addDataDisplay(yourDataGrid); </code></pre> <p>This approach works best if you also add a pager, because the dataprovider listens to range changes, triggered by clicking the pager.</p> <pre><code>SimplePager pager = new SimplePager(); pager.setDisplay(yourDataGrid); //don't forget to add the pager widget to the DOM </code></pre> <p>Hope this helps!</p>
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    1. COThanks for the advice. I just did as you said. then volia.. And also thanks for the code sample. I will try to implement this way. And for the class names, I agree with you :)
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    2. CO@Jasper what is the use of the variable orderOffset?
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    3. COThe orderOffset is a field in the class that I got this example from, just to keep track of the last Id fetched.
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