Skip to main content

casting an object from a wpf datagridrow

  • September 18, 2017
  • 2 replies
  • 0 views
D

I have a wpf datagrid that and am trying to cast a datagrid.SelectedItem to a custom object. Getting the error "Unable to cast object of type 'System.Data.DataRowView' to type 'CarrierRecord'." when this line "set carrierRecord to DG_CellCarriers::SelectedItem as type CarrierRecord" is executed. Works just fine in c#.  Am I missing something basic here? My datagrid is bound to a datatable.

    2 replies

    Chris Glazier
    Forum|alt.badge.img+2
    • Chris GlazierModerator
    • Moderator
    • September 20, 2017

    I have a wpf datagrid that and am trying to cast a datagrid.SelectedItem to a custom object. Getting the error "Unable to cast object of type 'System.Data.DataRowView' to type 'CarrierRecord'." when this line "set carrierRecord to DG_CellCarriers::SelectedItem as type CarrierRecord" is executed. Works just fine in c#.  Am I missing something basic here? My datagrid is bound to a datatable.

    The actual object that is bound to the dataGrid is a DataRowView. I can get at the selected data using something like the following using the Row property where ItemArray contains the columns in the row:

    method-id dataGrid1_SelectionChanged.
    procedure division using by value sender as object e as type System.Windows.Controls.SelectionChangedEventArgs.
    declare selectedrow as type System.Data.DataRowView = self::dataGrid1::SelectedItem as type System.Data.DataRowView
    declare mystring as string = selectedrow::Row::ItemArray[1]

    end method.
    Lanter Werner
    • Lanter Werner
    • Participating Frequently
    • September 22, 2017

    I have a wpf datagrid that and am trying to cast a datagrid.SelectedItem to a custom object. Getting the error "Unable to cast object of type 'System.Data.DataRowView' to type 'CarrierRecord'." when this line "set carrierRecord to DG_CellCarriers::SelectedItem as type CarrierRecord" is executed. Works just fine in c#.  Am I missing something basic here? My datagrid is bound to a datatable.

    This can be the solution to get an item of the DataGrid ItemsSource:
    set carrierRecord to DG_CellCarriers::Items::CurrentItem as type CarrierRecord:

    Consider, a new row is not of type CarrierRecord (CanUserAddRows="True")

    Following 2 statements select same object in my program::
    set GridZeile to DGWerte::Items::CurrentItem as type WPFApplDataGrid.GridZeile:
    set GridZeile to DGWerte::SelectedItem as type WPFApplDataGrid.GridZeile:

    Recent badge winners

    Explore all badges
    Terms & ConditionsAccessibility statement