view details on dataform or datagrid panning level

Question

I want to implement dataform or datagrid items should updated on base of view of map.it means if i have 20 features are available on my graphical layer.but on my screen i can see 10 features and another 10 features are available but i can visible them if i do panning or zoomin or zoom out.so i want on datagrid or dataform only 10 features details should visible and i do zoom in or panning it should updated if now i can see only 2 features then it should display only 2 features details on data grid or dataform.is there any way if i use envelop or something?

and also i am using two different tables one is spacial table and another is project details and they are related with one to many relationship so i don't have single table with all details

I think it is very difficult but i will appritiate if any one has solution.

Thanks
Foram

JenniferNery · Answer

If you want filter applied on FeatureDataGrid, you need to set its FilterSource property as Dominique suggested. I think you just need to add .ToList().dataGrid.FilterSource = dataGrid.GraphicsLayer.Graphics.Where(g => g.Geometry.Extent.Intersects(map.Extent)).ToList();

ForamParikh · Answer

Thanks but I am using datagrid not featured data grid.So how can i do filter?
i tried

QueryDetailsDataGrid.ItemsSource = featureSet.Features.Where(g11 => g11.Geometry.Extent.Intersects(MyMap.Extent)); but I am getting error.

or can i change style of featuredatagrid as datagrid also i don' t want any paging or dropdownlist in datagrid it should simple[ATTACH=CONFIG]11611[/ATTACH]

so can i make featuredatagird like this example?

Please help,

Thanks

datagrid.jpg

DominiqueBroux · Answer

Your second version should be OK (if you initialize the FilterSource)

I just tested with the FeaturedataGrid interactive sample by hooking up this handler to Map ExtentChanged event:private void MyMap_ExtentChanged(object sender, ExtentEventArgs e)
{
    var dataGrid = MyDataGrid;
    var map = sender as ESRI.ArcGIS.Client.Map;
    dataGrid.FilterSource = dataGrid.GraphicsLayer.Graphics.Where(g => g.Geometry.Extent.Intersects(map.Extent));
}

Looks working.