CODEWITHSUNDEEP
c#wpfxamluser-controlsconverters
demo
demo

Reputation: 6235

Value Converter doesn't work in CustomControl

I tried to use the control from this post - FlipView Control. Here is what I have:

<flipViewControl:FlipView ItemsSource="{Binding Images}" Name="ImagesFlipView"
                                            SelectedIndex="{Binding ElementName=ProductImagesBullets, Path=SelectedIndex, Mode=TwoWay}" Grid.Row="0">
    <flipViewControl:FlipView.ItemTemplate>
        <DataTemplate>
            <Image Source="{Binding FileLocation, Converter={StaticResource ImagePathConverter}}" Stretch="Fill"/>
        </DataTemplate>
    </flipViewControl:FlipView.ItemTemplate>
</flipViewControl:FlipView>

ImagePathConverter set ImageSource:

public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
    var url = string.Format("{0}{1}", ConfigurationManager.AppSettings["SiteUri"], value);

    var bi = new BitmapImage();
    bi.BeginInit();
    bi.CreateOptions = BitmapCreateOptions.IgnoreColorProfile;
    bi.CacheOption = BitmapCacheOption.OnDemand;
    bi.UriSource = new Uri(url);
    bi.EndInit();
    return bi.Clone();
}

But in this user control, in Debug, I never get inside this converter (When I tried it on a simple alone image, it works).

What can be the solution for this problem? (Images aren't displayed, because converter doesn't apply correct ImageSource for Image)

I have created a test project with this control and converter - it works... Strange, very strange

UPD : Now it seems like 

<flipViewControl:FlipView.ItemTemplate>
                                                <DataTemplate>
                                                    <TextBlock Text="{Binding FileLocation}"></TextBlock>
                                                    <!--<Image Source="{Binding FileLocation, Converter={StaticResource ImagePathConverter}}" Stretch="Fill"/>-->
                                                </DataTemplate>
                                            </flipViewControl:FlipView.ItemTemplate>

doesn't work at all. I have tried to set another template, but it also doesn't work. About binding - I have added the Converter just to see what is bound like here and Binding is correct.

UPD : Problem resolved when I understand that Custom Control should be as separate dll. So I just move my code into separate project and add reference to Main project...

Upvotes: 1

Views: 114

Answers (1)

dontbyteme
dontbyteme

Reputation: 1261

What about changing the property FileLocation to something like

public object FileLocation
{
    get
    {
        try
        {
             return new BitmapImage(new Uri((string)PathToImage));
        }
        catch 
        {
             return new BitmapImage();
        }
    }
}

XAML

<flipViewControl:FlipView ItemsSource="{Binding Images}" Name="ImagesFlipView" SelectedIndex="{Binding ElementName=ProductImagesBullets, Path=SelectedIndex, Mode=TwoWay}" Grid.Row="0">
    <flipViewControl:FlipView.ItemTemplate>
        <DataTemplate>
            <Image Source="{Binding FileLocation}" />  
        </DataTemplate>
    </flipViewControl:FlipView.ItemTemplate>
</flipViewControl:FlipView>

without using a Converter?

Upvotes: 0

Related Questions