DataPager not working when binding to silverlight datagrid with URL ArcGIS service!

Question

Hello,

I searched for paging solution in ArcGIS for Silverlight dataGrid and could not find out the solution??? 
In my dataPager, I can see how many pages but when I navigate using next, previous the data not display by page size.

Here are my codes as following:

MainPage.xaml

MainPage.xaml.cs

QueryTask queryTask = new QueryTask("http://egis/ArcGIS/rest/services/SCH/MapServer/0");
queryTask.ExecuteCompleted += QueryTask_ExecuteCompleted;
queryTask.Failed += QueryTask_Failed;

ESRI.ArcGIS.Client.Tasks.Query query = new ESRI.ArcGIS.Client.Tasks.Query();
query.Text = TaskNumberTextBox.Text;
query.OutFields.Add("*");
query.Where = "1=1";
queryTask.ExecuteAsync(query);

QueryDetailsDataGrid.ItemsSource = new PagedCollectionView("http://egis/ArcGIS/rest/services/SCH/MapServer/0");
SCHPager.Source = QueryDetailsDataGrid.ItemsSource;

Anything extra code in my code behind? I am newbie to ArcGIS API for silverlight, so I really need your expertise to make it happen. Thanks in advance.

AnhTruong · Answer

You're super code. Thanks again.
should be: 
void QueryTask_ExecuteCompleted(object sender, QueryEventArgs args)
{
FeatureSet featureSet = args.FeatureSet;
pagedCollectionView = new PagedCollectionView(args.FeatureSet);

if (featureSet != null && featureSet.Features.Count > 0)
QueryDetailsDataGrid.ItemsSource = pagedCollectionView ;
else
MessageBox.Show("No features returned from query");
}

DominiqueBroux · Answer

void QueryTask_ExecuteCompleted(object sender, QueryEventArgs args)
{
FeatureSet featureSet = args.FeatureSet;
pagedCollectionView = new PagedCollectionView(args.FeatureSet);

if (featureSet != null && featureSet.Features.Count > 0)
QueryDetailsDataGrid.ItemsSource = featureSet.Features;
else
MessageBox.Show("No features returned from query");
}

should be: 
void QueryTask_ExecuteCompleted(object sender, QueryEventArgs args)
{
FeatureSet featureSet = args.FeatureSet;
pagedCollectionView = new PagedCollectionView(args.FeatureSet);

if (featureSet != null && featureSet.Features.Count > 0)
QueryDetailsDataGrid.ItemsSource = pagedCollectionView ;
else
MessageBox.Show("No features returned from query");
}

AnhTruong · Answer

Here are my detailed code after changes as following:

MainPage.xaml.cs

private void LoadData()
 {

QueryTask queryTask = new QueryTask(URLService);
 queryTask.ExecuteCompleted += QueryTask_ExecuteCompleted;
 queryTask.Failed += QueryTask_Failed;

ESRI.ArcGIS.Client.Tasks.Query query = new ESRI.ArcGIS.Client.Tasks.Query();
 query.OutFields.Add("*");
 query.Where = "1=1";
 queryTask.ExecuteAsync(query);

// How do you make changes for two following lines??? 
 QueryDetailsDataGrid.ItemsSource = new PagedCollectionView("http://egis/ArcGIS/rest/services/SCH/MapServer/0");
 SCHPager.Source = QueryDetailsDataGrid.ItemsSource;

}

void QueryTask_ExecuteCompleted(object sender, QueryEventArgs args)
 {
 FeatureSet featureSet = args.FeatureSet;
 pagedCollectionView = new PagedCollectionView(args.FeatureSet);

if (featureSet != null && featureSet.Features.Count > 0)
 QueryDetailsDataGrid.ItemsSource = featureSet.Features;
 else
 MessageBox.Show("No features returned from query");
 }

MainPage.xaml

<sdk:DataPager x:Name="SCHPager" Grid.Column="1" Grid.Row="1" Source ="{Binding Path = ItemsSource, ElementName=QueryDetailsDataGrid}" PageSize="30" />

==========================================================================

I added new code to QueryTask_ExecuteCompleted(object sender, QueryEventArgs args) but nothing seems to be working at all. Please double check it. Thanks.