ansaurus

Question

Answer 1

+1 A:

Not sure what your problem is, the bindings (apart from the missing end quotes) appear to be fine. The following code works fine for me.

public class Quotes
{
    public string Description { get; set; }
    public decimal Value { get; set; }
}

public class ApplicationPresenter
{
    public ApplicationPresenter()
    {
        PriceList = new ObservableCollection<Quotes>()
        {
            new Quotes(){Description="Quote One", Value=10m},
            new Quotes(){Description="Quote Two", Value=10m},
            new Quotes(){Description="Quote Three", Value=10m},
            new Quotes(){Description="Quote Four", Value=10m},
        };
    }
    public ObservableCollection<Quotes> PriceList { get; private set; }
}

<Window 
    x:Class="ObjectDataProviderPresenterSample.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid"
    xmlns:local="clr-namespace:ObjectDataProviderPresenterSample"
    Title="Window1" 
    Height="300" 
    Width="300" 
    >
    <Window.Resources>
        <ObjectDataProvider 
            x:Key="ApplicationPresenterDS" 
            ObjectType="{x:Type local:ApplicationPresenter}" 
            />
        <xcdg:DataGridCollectionViewSource 
            x:Key="price_list" 
            Source="{Binding 
                        Source={StaticResource ApplicationPresenterDS}, 
                        Path=PriceList}" 
            />            
    </Window.Resources>  

    <Grid>
        <xcdg:DataGridControl ItemsSource="{Binding Source={StaticResource price_list}}" />
    </Grid>
</Window>

Ian Oakes 2008-11-01 23:27:48

Answer 2

A:

I am not sure, since it is not very clear from your code where data go to PriceList, but what I see is that this collection is just empty in second xaml.

Creating ObjectDataProvider in xaml in both cases just creates object of type ApplicationPresenter through default constructor. Your constructor creates empty collection PriceList. (Ian's constructor creates PriceList AND fills it with fake data. That's why his example works).

So, DataGridCollectionViewSource in second xaml of your example basically refers to ApplicationPresenter with empty PriceList.

The first xaml, in contrast, refers to PriceList of WebSitePricesView which, I believe, somehow is filled somewehere outside given slice of code.

If my theory is good, the removal of ObjectDataProvider from the first xaml won't cange anything - it sill will be working, because data goes directly to presenter.PriceList.

But, again, I am not sure.

2008-11-05 08:46:38

ansaurus

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Equivalent WPF binding syntax

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