I'm working on a .NET MAUI app and recently enabled compiled bindings by adding this to my .csproj file:
<MauiEnableXamlCBindingWithSourceCompilation>true</MauiEnableXamlCBindingWithSourceCompilation>
After doing this, a Command (NavigateToLogDetailsCommand) in my CollectionView is no longer firing when defined like this:
<?xml version="1.0" encoding="utf-8" ?>
<baseClass:MobileContentPageBase
x:Class="My.UI.LogListView.LogListViewPage"
xmlns=";
xmlns:x=";
xmlns:baseClass="clr-namespace:My.BaseClasses"
xmlns:baseConv="clr-namespace:My.Core.Converters"
xmlns:controls="clr-namespace:My.Core.Controls"
xmlns:core="clr-namespace:My.UI.Core"
xmlns:helpers="clr-namespace:My.Core.Helpers"
xmlns:toolkit=";
xmlns:viewModels="clr-namespace:My.ViewModels"
xmlns:vm="clr-namespace:My.LogListView"
x:Name="_this"
Title="View Log"
x:DataType="vm:LogListViewPageViewModel"
Shell.BackgroundColor="{StaticResource Primary}"
Shell.TitleColor="{StaticResource White}">
<Shell.BackButtonBehavior>
<BackButtonBehavior Command="{Binding Path=NavigateBackCommand}"/>
</Shell.BackButtonBehavior>
<baseClass:MobileContentPageBase.Resources>
<baseConv:DateFormatConverter x:Key="dateFormatter"/>
</baseClass:MobileContentPageBase.Resources>
<baseClass:MobileContentPageBase.ToolbarItems>
<controls:ActionBarItem
x:Name="copyAction"
Clicked="CopyAction_Clicked"
IsEnabled="False">
<controls:ActionBarItem.IconImageSource>
<FontImageSource
FontFamily="{x:Static core:Constants.MaterialDesignIcons}"
Glyph="{x:Static helpers:MaterialFontHelper.ContentCopy}"
Size="22"
Color="{DynamicResource Key=AppPrimaryForegroundColor}"/>
</controls:ActionBarItem.IconImageSource>
</controls:ActionBarItem>
</baseClass:MobileContentPageBase.ToolbarItems>
<AbsoluteLayout HorizontalOptions="Fill"
VerticalOptions="Fill">
<Grid
AbsoluteLayout.LayoutBounds="0,0,1,1"
AbsoluteLayout.LayoutFlags="All"
RowDefinitions="Auto, *">
<Label
Grid.Row="0"
Margin="10,15"
Style="{StaticResource CardHeaderLabelStyle}"
Text="Log Events"/>
<CollectionView
Grid.Row="1"
ItemsSource="{Binding LogList}"
RemainingItemsThreshold="1"
RemainingItemsThresholdReachedCommand="{Binding LoadDataCommand}"
SelectionChanged="CollectionView_SelectionChanged"
SelectionMode="Multiple">
<CollectionView.ItemTemplate>
<DataTemplate x:DataType="viewModels:LogEventViewModel">
<Border Margin="2"
Padding="12">
<Grid
ColumnDefinitions="220, *"
RowDefinitions="Auto,*,Auto"
RowSpacing="4">
<Label
Grid.Row="0"
Grid.Column="0"
Text="{Binding Path=Timestamp, Converter={StaticResource dateFormatter}, ConverterParameter='long'}"/>
<Label
Grid.Row="0"
Grid.Column="1"
Text="{Binding Path=Level}"/>
<Image
Grid.Row="0"
Grid.Column="2"
Margin="0,0,8,0"
Aspect="AspectFit"
HeightRequest="18"
HorizontalOptions="End"
IsVisible="{Binding Path=IsOnline}">
<Image.Source>
<FontImageSource
FontFamily="MaterialDesignIcons"
Glyph="{x:Static helpers:MaterialFontHelper.CloudSyncOutline}"
Color="{StaticResource Black}"/>
</Image.Source>
</Image>
<Grid Grid.Row="1"
Grid.ColumnSpan="2"
ColumnDefinitions="*, Auto">
<Label
Grid.Row="0"
Grid.Column="0"
LineBreakMode="TailTruncation"
MaxLines="1"
Text="{Binding Path=Message}"/>
<Button
IsEnabled="True"
Grid.Column="1"
Padding="10,0,0,0"
BackgroundColor="Transparent"
Command="{Binding Path=NavigateToLogDetailsCommand, Source={x:Reference _this}, x:DataType=vm:LogListViewPageViewModel}"
CommandParameter="{Binding .}"
Text="more..."/>
</Grid>
</Grid>
</Border>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>
</Grid>
</AbsoluteLayout>
</baseClass:MobileContentPageBase>
However, if I disable compiled bindings, it works, but I get this warning:
XamlC warning XC0025: Binding was not compiled because it has an explicitly set Source property.
How can I fix this while keeping compiled bindings enabled?
I'm working on a .NET MAUI app and recently enabled compiled bindings by adding this to my .csproj file:
<MauiEnableXamlCBindingWithSourceCompilation>true</MauiEnableXamlCBindingWithSourceCompilation>
After doing this, a Command (NavigateToLogDetailsCommand) in my CollectionView is no longer firing when defined like this:
<?xml version="1.0" encoding="utf-8" ?>
<baseClass:MobileContentPageBase
x:Class="My.UI.LogListView.LogListViewPage"
xmlns="http://schemas.microsoft/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft/winfx/2009/xaml"
xmlns:baseClass="clr-namespace:My.BaseClasses"
xmlns:baseConv="clr-namespace:My.Core.Converters"
xmlns:controls="clr-namespace:My.Core.Controls"
xmlns:core="clr-namespace:My.UI.Core"
xmlns:helpers="clr-namespace:My.Core.Helpers"
xmlns:toolkit="http://schemas.microsoft/dotnet/2022/maui/toolkit"
xmlns:viewModels="clr-namespace:My.ViewModels"
xmlns:vm="clr-namespace:My.LogListView"
x:Name="_this"
Title="View Log"
x:DataType="vm:LogListViewPageViewModel"
Shell.BackgroundColor="{StaticResource Primary}"
Shell.TitleColor="{StaticResource White}">
<Shell.BackButtonBehavior>
<BackButtonBehavior Command="{Binding Path=NavigateBackCommand}"/>
</Shell.BackButtonBehavior>
<baseClass:MobileContentPageBase.Resources>
<baseConv:DateFormatConverter x:Key="dateFormatter"/>
</baseClass:MobileContentPageBase.Resources>
<baseClass:MobileContentPageBase.ToolbarItems>
<controls:ActionBarItem
x:Name="copyAction"
Clicked="CopyAction_Clicked"
IsEnabled="False">
<controls:ActionBarItem.IconImageSource>
<FontImageSource
FontFamily="{x:Static core:Constants.MaterialDesignIcons}"
Glyph="{x:Static helpers:MaterialFontHelper.ContentCopy}"
Size="22"
Color="{DynamicResource Key=AppPrimaryForegroundColor}"/>
</controls:ActionBarItem.IconImageSource>
</controls:ActionBarItem>
</baseClass:MobileContentPageBase.ToolbarItems>
<AbsoluteLayout HorizontalOptions="Fill"
VerticalOptions="Fill">
<Grid
AbsoluteLayout.LayoutBounds="0,0,1,1"
AbsoluteLayout.LayoutFlags="All"
RowDefinitions="Auto, *">
<Label
Grid.Row="0"
Margin="10,15"
Style="{StaticResource CardHeaderLabelStyle}"
Text="Log Events"/>
<CollectionView
Grid.Row="1"
ItemsSource="{Binding LogList}"
RemainingItemsThreshold="1"
RemainingItemsThresholdReachedCommand="{Binding LoadDataCommand}"
SelectionChanged="CollectionView_SelectionChanged"
SelectionMode="Multiple">
<CollectionView.ItemTemplate>
<DataTemplate x:DataType="viewModels:LogEventViewModel">
<Border Margin="2"
Padding="12">
<Grid
ColumnDefinitions="220, *"
RowDefinitions="Auto,*,Auto"
RowSpacing="4">
<Label
Grid.Row="0"
Grid.Column="0"
Text="{Binding Path=Timestamp, Converter={StaticResource dateFormatter}, ConverterParameter='long'}"/>
<Label
Grid.Row="0"
Grid.Column="1"
Text="{Binding Path=Level}"/>
<Image
Grid.Row="0"
Grid.Column="2"
Margin="0,0,8,0"
Aspect="AspectFit"
HeightRequest="18"
HorizontalOptions="End"
IsVisible="{Binding Path=IsOnline}">
<Image.Source>
<FontImageSource
FontFamily="MaterialDesignIcons"
Glyph="{x:Static helpers:MaterialFontHelper.CloudSyncOutline}"
Color="{StaticResource Black}"/>
</Image.Source>
</Image>
<Grid Grid.Row="1"
Grid.ColumnSpan="2"
ColumnDefinitions="*, Auto">
<Label
Grid.Row="0"
Grid.Column="0"
LineBreakMode="TailTruncation"
MaxLines="1"
Text="{Binding Path=Message}"/>
<Button
IsEnabled="True"
Grid.Column="1"
Padding="10,0,0,0"
BackgroundColor="Transparent"
Command="{Binding Path=NavigateToLogDetailsCommand, Source={x:Reference _this}, x:DataType=vm:LogListViewPageViewModel}"
CommandParameter="{Binding .}"
Text="more..."/>
</Grid>
</Grid>
</Border>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>
</Grid>
</AbsoluteLayout>
</baseClass:MobileContentPageBase>
However, if I disable compiled bindings, it works, but I get this warning:
XamlC warning XC0025: Binding was not compiled because it has an explicitly set Source property.
How can I fix this while keeping compiled bindings enabled?
Share Improve this question edited Mar 10 at 10:04 Divyesh asked Mar 10 at 9:56 DivyeshDivyesh 2,41727 silver badges47 bronze badges1 Answer
Reset to default 0If we scrutinize the Command, we can see the problem:
Command="{Binding Path=NavigateToLogDetailsCommand,
Source={x:Reference _this},
x:DataType=vm:LogListViewPageViewModel}"
You're telling it Source={x:Reference _this}. From reading above, we quickly identify that "_this" refers to the MobileContentPageBase which isn't a LogListViewPageViewModel.
If I had to guess, I suspect NavigateToLogDetailsCommand comes from your view model which is set to the BindingContext of your page. I had to make this assumption since no code-behind was supplied to support or deny this.
Anyhow, to correct this, if the above assumption is correct, then, the Command probably needs to change to:
Command="{Binding Path=BindingContext.NavigateToLogDetailsCommand,
Source={x:Reference _this},
x:DataType=ContentPage}" />
发布者：admin，转转请注明出处：http://www.yc00.com/questions/1744853117a4597246.html
评论列表（0条）