[Solved] Newly Added Row Disappears after RowEditEnded

[Greg]

If I click the "Click here to add new item" row in my gridview, a new row appears as expected. However, as soon as I click anywhere other than on the new row (triggering RowEditEnded), the new row disappears from the gridview and the "Click here to add new item" row replaces it.

If I then save changes, the invisible row DOES save to the database and re-appears after a refresh. In other words, while the row disappears visually from the grid, it still exists in the datasource the grid binds to and is valid enough to save.

If I repeat the actions in the first paragraph 10 times and then save changes, 10 invisible rows will save to the database and reappear after a refresh.

What is going on here???

The gridview::

<telerik:RadGridView
    x:Name="LoanGrid"
    ItemsSource="{Binding Loans}"
    IsBusy="{Binding AreLoansBusy}"
    CanUserSelect="{Binding CanUserSelectLoans}"
    SelectedItem="{Binding SelectedLoan, Mode=TwoWay}"
    Margin="10,-6,10,10"
    GroupRenderMode="Flat"
    IsReadOnly="{Binding UserHasProjectRole, Converter={StaticResource NegationConverter}}"
    ColumnWidth="*"
    CanUserInsertRows="{Binding UserHasProjectRole}"
    SelectionMode="Single"
    NewRowPosition="Bottom"
    AutoGenerateColumns="False"
    IsSynchronizedWithCurrentItem="True"
    ShowGroupPanel="False"
    IsFilteringAllowed="False"
    ValidatesOnDataErrors="InEditMode"
    ActionOnLostFocus="CommitEdit"
    Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2">

    <telerik:RadGridView.Columns>
        <telerik:GridViewComboBoxColumn
            Header="Loan Type"
            IsReadOnly="False"
            DataMemberBinding="{Binding LoanTypeId}"
            SelectedValueMemberPath="Id"
            DisplayMemberPath="Description"
            ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}, Path=DataContext.LoanTypes}"
            Width="Auto" />
        <telerik:GridViewDataColumn
            UniqueName="ApplicationAmount"
            Header="Application Amount"
            DataMemberBinding="{Binding ApplicationAmount, StringFormat=c2}"
            TextAlignment="Right"
            Width="Auto" />
        <telerik:GridViewDataColumn
            Header="Total Project Costs"
            DataMemberBinding="{Binding TotalProjectCosts, StringFormat=c2}"
            TextAlignment="Right"
            Width="Auto" />
        <telerik:GridViewDataColumn
            Header="Eligible Project Costs"
            DataMemberBinding="{Binding EligibleProjectCosts, StringFormat=c2}"
            TextAlignment="Right"
            Width="Auto" />
        <telerik:GridViewDataColumn
            Header="Interest Rate"
            DataMemberBinding="{Binding InterestRate, StringFormat='{}{0}%'}"
            TextAlignment="Right"
            Width="Auto" />
        <telerik:GridViewDataColumn
            Header="Indenture"
            DataMemberBinding="{Binding Indenture}"
            Width="Auto" />
        <telerik:GridViewDataColumn
            Header="EFC Bond Series"
            DataMemberBinding="{Binding EfcBondSeries}"
            Width="Auto" />
        <telerik:GridViewDataColumn
            Header="Auditing"
            IsReadOnly="True"
            Width="Auto">
            <telerik:GridViewDataColumn.CellTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal">
                        <TextBlock Text="{Binding LastUpdatedBy}" />
                        <TextBlock Text="{Binding LastUpdatedDate, StringFormat=g}" Margin="5 0 0 0" />
                    </StackPanel>
                </DataTemplate>
            </telerik:GridViewDataColumn.CellTemplate>
        </telerik:GridViewDataColumn>
    </telerik:RadGridView.Columns>

    <i:Interaction.Triggers>
        <i:EventTrigger EventName="RowEditEnded">
            <infrastructure:InvokeDelegateCommandAction
        Command="{Binding LoanRowEditEndedCommand}"
        CommandParameter="{Binding RelativeSource={RelativeSource Self}, Path=InvokeParameter}" />
        </i:EventTrigger>
        <i:EventTrigger EventName="Deleting">
            <infrastructure:InvokeDelegateCommandAction
        Command="{Binding LoanRowDeletingCommand}"
        CommandParameter="{Binding RelativeSource={RelativeSource Self}, Path=InvokeParameter}" />
        </i:EventTrigger>
        <i:EventTrigger EventName="RowValidating">
            <infrastructure:InvokeDelegateCommandAction
        Command="{Binding LoanRowValidatingCommand}"
        CommandParameter="{Binding RelativeSource={RelativeSource Self}, Path=InvokeParameter}" />
        </i:EventTrigger>
    </i:Interaction.Triggers>
</telerik:RadGridView>

The bound data source:

public QueryableDataServiceCollectionView<ProjectPhaseLoan> Loans { get; private set; }

[Yoan]

Hello Greg,

Unfortunately with the supplied information I cannot figure out what is going on. Could you please try to isolate the problem you have in a demo project which we could debug locally? 

As a side note - could you try removing the EventTriggers and let me know about the result?

Regards,
Yoan
Telerik

 

 

[Greg]

I finally got back to this issue.

It turned out to be caused by the grid being filtered on a parent id and my code not setting that parent id. So as soon as focus left the row, it was filtered out.