Qfyilyi

I am firing an ICommand when a cell is changed in my DataGrid:

PageStock.xaml

<DataGrid ItemsSource="{Binding StockQuantities}" 

            SelectedItem="{Binding SelectedStockQuantity}"

            x:Name="dataGridConsignments" 

            Margin="10,47,10,9.6"

            ColumnWidth="*" AutoGenerateColumns="False">



    <i:Interaction.Triggers>

        <i:EventTrigger EventName="CellEditEnding">

            <i:InvokeCommandAction Command="{Binding Test}"/>

        </i:EventTrigger>

    </i:Interaction.Triggers>



    <DataGrid.Columns>

        <DataGridTextColumn IsReadOnly="True" Header="Bell Number" Width="100" Binding="{Binding BellNumber}"></DataGridTextColumn>

        <DataGridTextColumn IsReadOnly="True" Header="Description" Binding="{Binding Description}"></DataGridTextColumn>

        <DataGridTextColumn IsReadOnly="False" Header="Quantity" Width="100" Binding="{Binding Quantity}" ></DataGridTextColumn>

    </DataGrid.Columns>

</DataGrid>

But when the ICommand fires, I can see that SelectedStockQuantity still contains the old Quantity:

PageStockViewModel.cs

public StockQuantityViewModel SelectedStockQuantity { get; set; }

private ICommand test;

public ICommand Test

{

    get

    {

        return test

            ?? (test = new ActionCommand(() =>

            {

                var stockQ = StockQuantities.FirstOrDefault(sq => SelectedStockQuantity.Id == sq.Id);

                Commands.UpdateStockQuantity(stockQ.BellNumber, SelectedStockQuantity.Quantity);

            }));

    }

}

If I then change the cell again without navigating to a new page, then the previous value will be applied (I can see it in SelectedStockQuantity.Quantity)

Why is this happening? How can I get the newly edited value in my ICommand?

StockQuantityViewModel

class StockQuantityViewModel : BaseViewModel

{

    public int Id { get; set; }

    public StockQuantity StockQuantity { get; set; }

    public string BellNumber { get; set; }

    public string ArtemisNumber { get; set; }

    public int Quantity { get; set; }

    public string Description { get; set; }



    public StockQuantityViewModel(StockQuantity stockQuantity)

    {

        StockQuantity = stockQuantity;



        Id = stockQuantity.id;

        BellNumber = stockQuantity.Part.BellNumber;

        ArtemisNumber = stockQuantity.Part.ArtemisNumber;

        Quantity = stockQuantity.Quantity;

        Description = stockQuantity.Part.Description;

    }

}

Seems to be working after making this change:

<DataGridTextColumn IsReadOnly="False" Header="Quantity" Width="100" 

    Binding="{Binding Quantity,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" >

</DataGridTextColumn>

I adding this to the Binding:

Mode=TwoWay,UpdateSourceTrigger=PropertyChanged