Question

I am using PLinqInstantFeedbackSource when populating the grid.

PLinqInstantFeedbackSource pLinqInstantFeedbackDataSource = new PLinqInstantFeedbackSource();
pLinqInstantFeedbackDataSource.GetEnumerable += pLinqInstantFeedbackDataSource_GetEnumerable;

gridControl.ItemsSource = pLinqInstantFeedbackDataSource;

gridControl.DataContext = SomeViewModel;

private void pLinqInstantFeedbackDataSource_GetEnumerable(object sender, DevExpress.Data.PLinq.GetEnumerableEventArgs e)
{
    e.Source = SomeViewModel.GetList();
}

So when i select all rows using:

((DevExpress.Xpf.Grid.TableView)gridControl.View).SelectAll();​

it seems to select all the rows. ​So this is working fine, but the user has not scrolled down so that all the rows are visible or fetched.

So now i want to loop through all the rows and get the row object using:

var selectedRowHandles = ((DevExpress.Xpf.Grid.TableView)gridControl.View).GetSelectedRowHandles().AsEnumerable();

foreach (var item in selectedRowHandles)
{
    SomeViewModel.SelectedItems.Add((SomeEntityObject)gridControl.GetRow(item)); 
}

This seems to work fine for all visible rows, but when it tries to Get the next row that is not visible it throws an exception:

​InvalidCastException
Unable to cast object of type 'DevExpress.Data.NotLoadedObject' to type 'SomeEntityObject'.​

So, how to get all rows in the GridControl when using PLinqInstantFeedbackSource when row is not visible.

Answer 1

Found the right answer from DevExpress.