Eu sunt încercarea de a analiza cu XamlReader.Load()
o DataTemplate
(pentru o WPF datagrid) create în mod dinamic în codul spatele :
DataTemplate dataTemplate;
StringReader template = new StringReader($@"
<DataTemplate
xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation""
xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml""
xmlns:local=""clr-namespace:MyApp;assembly=MyApp"">
<DataTemplate.Resources>
<local:ArrayMultiValueConverter x:Key=""arrayMultiValueConverter""/>
</DataTemplate.Resources>
<StackPanel Orientation=""Vertical"">
<Expander VerticalAlignment=""Center"" xmlns:i=""http://schemas.microsoft.com/xaml/behaviors"">
<i:Interaction.Triggers>
<i:EventTrigger EventName=""IsExpanded"">
<i:InvokeCommandAction Command=""{{Binding DataContext.TextFilterColumn}}""/>
</i:EventTrigger>
</i:Interaction.Triggers>
<Expander.Header>
<TextBlock x:Name=""{dtColumnName}"" VerticalAlignment=""Center"" Text=""{{TemplateBinding Content}}"" Margin=""5,5,5,0"" FontWeight=""SemiBold""/>
</Expander.Header>
<StackPanel Orientation=""Horizontal"">
<TextBox x:Name=""{"TbxFilter" + dtColumnName}"" Width=""100"" Margin=""5""/>
<TextBlock Margin=""0,0,5,0"" VerticalAlignment=""Center"" FontFamily=""Segoe MDL2 Assets"">
<Hyperlink TextDecorations=""{{x:Null}}"" Command=""{{Binding DataContext.FilterColumnName, RelativeSource={{RelativeSource FindAncestor, AncestorType={{x:Type Window}}}}}}"">
<Hyperlink.CommandParameter>
<MultiBinding Converter=""{{StaticResource arrayMultiValueConverter}}"">
<Binding Path=""Text"" ElementName=""{dtColumnName}"" />
<Binding Path=""Text"" ElementName=""{"TbxFilter" + dtColumnName}"" />
</MultiBinding>
</Hyperlink.CommandParameter>

</Hyperlink>
</TextBlock>
<TextBlock Margin=""0,0,5,0"" VerticalAlignment=""Center"" FontFamily=""Segoe MDL2 Assets"">
<Hyperlink TextDecorations=""{{x:Null}}"" Command=""{{Binding DataContext.FilterColumnName, RelativeSource={{RelativeSource FindAncestor, AncestorType={{x:Type Window}}}}}}"">
<Hyperlink.CommandParameter>
<MultiBinding Converter=""{{StaticResource arrayMultiValueConverter}}"">
<Binding Path=""Text"" ElementName=""{dtColumnName}""/>
<Binding Path=""Text"" RelativeSource=""{{RelativeSource FindAncestor, AncestorType={{x:Type TextBlock}}}}""/>
</MultiBinding>
</Hyperlink.CommandParameter>

</Hyperlink>
</TextBlock>
</StackPanel>
</Expander>
</StackPanel>
</DataTemplate>
");
XmlReader xmlReader = XmlReader.Create(template);
dataTemplate = XamlReader.Load(xmlReader) as DataTemplate;
textColumn.HeaderTemplate = dataTemplate;
Totul este de lucru atunci când am elimina această parte de cod :
<i:Interaction.Triggers>
<i:EventTrigger EventName=""IsExpanded"">
<i:InvokeCommandAction Command=""{{Binding DataContext.TextFilterColumn}}""/>
</i:EventTrigger>
</i:Interaction.Triggers>
Dar când am adăuga, există o Exception Thrown
:
Sistem.Windows.Marcare.XamlParseException: "nu se Poate seta necunoscut membru '{http://schemas.microsoft.com/xaml/behaviors}Interacțiune.Declanseaza'.' Numărul de linie '11' și poziția '10'.'
Eu folosesc "XAML Comportamente" în urma acestui articol (dar la fel s-a întâmplat cu Interactivity
) :
https://devblogs.microsoft.com/dotnet/open-sourcing-xaml-behaviors-for-wpf/
Se pare a fi o problema cu XamlReader.Load(xmlReader)
.
Dacă știe cineva o soluție, voi fi recunoscător.
Configurare :
- Cadru 4.8 (a încercat cu 4.7.2)
- Microsoft.Xaml.Comportamente.Wpf 1.1.39
Multumesc.