WinUI 3 - 组合框在 Flyout 中无法正常工作
问题描述 投票：0回答：1
我有一个列表视图。 它的列表视图项包含一个文本块和两个字体图标。 当我打开窗口时，字体图标有一个 AttachedFlyout，其中带有加载对象的组合框。 我将每个组合框的选定项设置为列表的第一个元素。
当我打开/关闭组合框项目中的弹出按钮并重新打开相同的弹出按钮时，它工作正常，但如果我在其他组合框项目中打开弹出按钮，则先前的组合框选定项目将重置为 -1 索引。
这是项目模板：
<DataTemplate x:Key="ItemDataTemplate"
x:DataType="vm:ReflectionType">
<UserControl>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="auto" />
<ColumnDefinition Width="auto" />
</Grid.ColumnDefinitions>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup>
<VisualState x:Name="ascendente">
<VisualState.StateTriggers>
<triggers:CompareStateTrigger Comparison="Equal"
Value="{x:Bind Sorting,Mode=TwoWay}"
To="Ascendente" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="sort.Glyph"
Value="" />
<Setter Target="sort.(ToolTipService.ToolTip)"
Value="Ascendente" />
</VisualState.Setters>
</VisualState>
<VisualState x:Name="discendente">
<VisualState.StateTriggers>
<triggers:CompareStateTrigger Comparison="Equal"
Value="{x:Bind Sorting,Mode=TwoWay}"
To="Discendente" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="sort.Glyph"
Value="" />
<Setter Target="sort.(ToolTipService.ToolTip)"
Value="Discendente" />
</VisualState.Setters>
</VisualState>
<VisualState x:Name="nonordinato">
<VisualState.StateTriggers>
<triggers:CompareStateTrigger Comparison="Equal"
Value="{x:Bind Sorting,Mode=TwoWay}"
To="NonOrdinato" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="sort.Glyph"
Value="" />
<Setter Target="sort.(ToolTipService.ToolTip)"
Value="Non ordinato" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<TextBlock Text="{x:Bind DisplayProprieta,Mode=OneWay}" />
<FontIcon FontFamily="Segoe MDL2 Assets"
x:Name="sort"
Grid.Column="1"
ToolTipService.ToolTip="Ordina"
FontSize="12"
Margin="10,0,0,0"
ap:CommandAttachedProperty.ElementCommand="{x:Bind SetSortingCommand}"
Glyph="" />
<FontIcon FontFamily="Segoe MDL2 Assets"
FontSize="12"
Margin="10,0,0,0"
ToolTipService.ToolTip="Filtro"
FlyoutBase.AttachedFlyout="{StaticResource fo}"
ap:CommandAttachedProperty.ElementCommand="{x:Bind OpenCloseFilterCommand}"
ap:FlyOutOpenCloseAttachedPropery.IsOpen="{x:Bind IsFilter,Mode=OneWay}"
Grid.Column="2"
Glyph="" />
</Grid>
</UserControl>
</DataTemplate>
这是附加的弹出按钮：
<Flyout x:Key="fo">
<Flyout.FlyoutPresenterStyle>
<Style TargetType="FlyoutPresenter">
<Setter Property="ScrollViewer.HorizontalScrollMode"
Value="Disabled" />
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility"
Value="Disabled" />
<Setter Property="IsTabStop"
Value="True" />
<Setter Property="AllowFocusOnInteraction"
Value="True" />
</Style>
</Flyout.FlyoutPresenterStyle>
<StackPanel Spacing="3">
<CommandBar DefaultLabelPosition="Right"
Padding="0"
HorizontalAlignment="Left">
<AppBarButton Icon="Clear"
Label="Reset"
Command="{Binding ResetCommand}"/>
</CommandBar>
<ComboBox ItemsSource="{Binding ListaConfronti}"
DisplayMemberPath="CompareText"
HorizontalAlignment="Stretch"
SelectedItem="{Binding SelectedCompare,Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" />
<ContentControl ContentTemplateSelector="{StaticResource Selector}"
HorizontalContentAlignment="Stretch"
Content="{Binding Valori,Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" />
</StackPanel>
</Flyout>
这是视图模型：
public partial class FilterManagerForList:ObservableObject
{
[ObservableProperty] ObservableCollection<ReflectionType> _items=new();
[ObservableProperty] Type _tipoOggetto;
public void Manager(Type objType)
{
if(TipoOggetto is not null)
{
foreach (var item2 in objType.GetProperties())
{
ReflectionType rt = new();
rt.NomeProprieta = item2.Name;
rt.DisplayProprieta = item2.CustomAttributes.Any() ? item2.CustomAttributes.First().NamedArguments.First().TypedValue.ToString() : item2.Name;
rt.DisplayProprieta=rt.DisplayProprieta.Trim('\"');
rt.TipoProprieta = item2.PropertyType;
Items.Add(rt);
}
}
}
[RelayCommand]
void ApplicaFiltro()
{
var lista=Items.Where(c => c.Valori is ValueChild && c.Valori.Value is not null);
List<dynamic> lst = new List<dynamic>();
foreach (var item in lista)
{
var tipoConfronto = item.SelectedCompare.MongoCompare;
if (item.SelectedCompare.Tipo == TipiProprieta.Stringa)
{
if (tipoConfronto == "$eq")
{
var match = GetObj();
var confronto=GetObj();
confronto.Add(item.NomeProprieta,item.Valori.Value);
match.Add("$match", confronto);
lst.Add(match);
}
}
}
var tt=JsonSerializer.Serialize(lst);
}
partial void OnTipoOggettoChanged(Type oldValue, Type newValue)
{
if(newValue is not null)
Manager(newValue);
}
IDictionary<string,object> GetObj()
{
dynamic dynamicObj = new ExpandoObject();
return (IDictionary<string, object>)dynamicObj;
}
}
这是ReflectionType模型：
public partial class ReflectionType : ObservableObject
{
[ObservableProperty] string _nomeProprieta;
[ObservableProperty] string _displayProprieta;
[ObservableProperty] Type _tipoProprieta;
[ObservableProperty] ValueChild _valori;
[ObservableProperty] SortOrder _sorting;
[ObservableProperty] bool _isFilter;
public List<CompareItem> ListaConfronti { get; set; }
[ObservableProperty] CompareItem _selectedCompare;
[RelayCommand]
void Reset()
{
//Valori = new();
//var item = ListaConfronti[0];
//SelectedCompare = new(item.CompareText, item.CompareVersion, item.Tipo);
//SelectedCompare = null;
SelectedCompare = ListaConfronti[0];
//Valori.Reset = true;
//Valori.Reset=false;
}
[RelayCommand]
void SetSorting()
{
if(Sorting==SortOrder.NonOrdinato) Sorting=SortOrder.Ascendente;
else if(Sorting==SortOrder.Ascendente) Sorting=SortOrder.Discendente;
else Sorting=SortOrder.NonOrdinato;
}
[RelayCommand]
void OpenCloseFilter()
{
IsFilter = !IsFilter;
}
partial void OnTipoProprietaChanged(Type oldValue, Type newValue)
{
if (newValue == typeof(int) ||
newValue == typeof(uint) ||
newValue == typeof(decimal) ||
newValue == typeof(long) ||
newValue == typeof(ulong) ||
newValue == typeof(double) ||
newValue == typeof(byte))
{
ListaConfronti = new()
{
new(){CompareText = "Uguale a",CompareVersion = 1,Tipo=TipiProprieta.Numero,MongoCompare="$eq" },
new(){CompareText = "Maggiore uguale a",CompareVersion = 1,Tipo=TipiProprieta.Numero,MongoCompare="$gte" },
new(){CompareText = "Maggiore di",CompareVersion = 1,Tipo=TipiProprieta.Numero,MongoCompare="$gt" },
new(){CompareText = "Minore uguale a",CompareVersion = 1,Tipo=TipiProprieta.Numero,MongoCompare="$lte" },
new(){CompareText = "Minore di",CompareVersion = 1,Tipo=TipiProprieta.Numero,MongoCompare="$lt"},
new(){CompareText = "Compreso tra",CompareVersion = 2,Tipo=TipiProprieta.Numero,MongoCompare="$in"},
new(){CompareText = "Diverso da",CompareVersion = 1,Tipo=TipiProprieta.Numero,MongoCompare="$ne"}
};
}
else if (newValue == typeof(string))
{
ListaConfronti = new()
{
new(){CompareText = "Uguale a",CompareVersion = 1,Tipo=TipiProprieta.Stringa,MongoCompare="$eq" },
new(){CompareText = "Diverso da",CompareVersion = 1,Tipo=TipiProprieta.Stringa,MongoCompare="$ne" },
new(){CompareText = "Contiene",CompareVersion = 1,Tipo=TipiProprieta.Stringa,MongoCompare="$in"},
new(){CompareText = "Inizia con",CompareVersion = 1,Tipo=TipiProprieta.Stringa,MongoCompare="$start"},
new(){CompareText = "Finisce con",CompareVersion = 1,Tipo=TipiProprieta.Stringa,MongoCompare="$end"}
};
}
else if (newValue == typeof(bool))
{
ListaConfronti = new()
{
new(){CompareText = "Uguale a",CompareVersion=1,Tipo=TipiProprieta.Booleano,MongoCompare="$eq"}
};
}
else if (newValue == typeof(DateTime))
{
ListaConfronti = new()
{
new(){CompareText = "Uguale a",CompareVersion = 1,Tipo=TipiProprieta.Data,MongoCompare="$eq" },
new(){CompareText = "Maggiore uguale",CompareVersion = 1,Tipo=TipiProprieta.Data,MongoCompare="$eq" },
new(){CompareText = "Maggiore di",CompareVersion = 1,Tipo=TipiProprieta.Data,MongoCompare="$gt" },
new(){CompareText = "Minore uguale",CompareVersion = 1,Tipo=TipiProprieta.Data,MongoCompare="$eq" },
new(){CompareText = "Minore di",CompareVersion = 1,Tipo=TipiProprieta.Data,MongoCompare="$lt"},
new(){CompareText = "Compreso tra",CompareVersion = 2,Tipo=TipiProprieta.Data,MongoCompare="$in"},
new(){CompareText = "Diverso da",CompareVersion = 1,Tipo=TipiProprieta.Data,MongoCompare="$ne"}
};
}
if (oldValue is null && SelectedCompare is null)
SelectedCompare = ListaConfronti[0];
}
partial void OnSelectedCompareChanged(CompareItem oldValue, CompareItem newValue)
{
if (newValue is null) return;
if (newValue.CompareVersion == 1)
{
//if(Valori is null)
Valori = new(newValue);
//Valori.DefinizioneProprieta = newValue;
}
else if (newValue.CompareVersion == 2)
{
//if (Valori is null)
Valori = new ValueChildBetween(newValue);
Valori.DefinizioneProprieta = newValue;
}
}
}
谢谢
1个回答
0
投票
投票
我注意到，如果我在页面资源中使用弹出按钮，它无法正常工作，而如果我在 fonticon 中使用相同的弹出按钮，它工作正常。
不工作：
<Page.Resource>
<Flyout x:Key="fo">
<Flyout.FlyoutPresenterStyle>
<Style TargetType="FlyoutPresenter">
<Setter Property="ScrollViewer.HorizontalScrollMode"
Value="Disabled" />
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility"
Value="Disabled" />
<Setter Property="IsTabStop"
Value="True" />
<Setter Property="AllowFocusOnInteraction"
Value="True" />
</Style>
</Flyout.FlyoutPresenterStyle>
<StackPanel Spacing="3">
<CommandBar DefaultLabelPosition="Right"
Padding="0"
HorizontalAlignment="Left">
<AppBarButton Icon="Clear"
Label="Reset"
Command="{Binding ResetCommand}"/>
</CommandBar>
<ComboBox ItemsSource="{Binding ListaConfronti}"
DisplayMemberPath="CompareText"
HorizontalAlignment="Stretch"
SelectedItem="{Binding SelectedCompare,Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" />
<ContentControl ContentTemplateSelector="{StaticResource Selector}"
HorizontalContentAlignment="Stretch"
Content="{Binding Valori,Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" />
</StackPanel>
</Flyout>
</Page.Resources>
<FontIcon FontFamily="Segoe MDL2 Assets"
x:Name="fiFiltro"
FontSize="12"
Margin="10,0,0,0"
FlyOutBase.AttachedAttachedFlyOut="{StaticResource fo}"
ToolTipService.ToolTip="Filtro"
ap:CommandAttachedProperty.ElementCommand="{x:Bind OpenCloseFilterCommand}"
ap:CommandAttachedProperty.ElementCommandParameter="{Binding ElementName=fiFiltro}"
Grid.Column="2"
Glyph=""/>
工作正常：
<FontIcon FontFamily="Segoe MDL2 Assets"
x:Name="fiFiltro"
FontSize="12"
Margin="10,0,0,0"
ToolTipService.ToolTip="Filtro"
ap:CommandAttachedProperty.ElementCommand="{x:Bind OpenCloseFilterCommand}"
ap:CommandAttachedProperty.ElementCommandParameter="{Binding ElementName=fiFiltro}"
Grid.Column="2"
Glyph="">
<FlyoutBase.AttachedFlyout>
<Flyout>
<Flyout.FlyoutPresenterStyle>
<Style TargetType="FlyoutPresenter">
<Setter Property="ScrollViewer.HorizontalScrollMode"
Value="Disabled" />
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility"
Value="Disabled" />
<Setter Property="IsTabStop"
Value="True" />
<Setter Property="AllowFocusOnInteraction"
Value="True" />
</Style>
</Flyout.FlyoutPresenterStyle>
<StackPanel Spacing="3">
<CommandBar DefaultLabelPosition="Right"
Padding="0"
HorizontalAlignment="Left">
<AppBarButton Icon="Clear"
Label="Reset"
Command="{Binding ResetCommand}" />
</CommandBar>
<ComboBox ItemsSource="{Binding ListaConfronti}"
DisplayMemberPath="CompareText"
HorizontalAlignment="Stretch"
SelectedItem="{Binding SelectedCompare,Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" />
<ContentControl ContentTemplateSelector="{StaticResource Selector}"
HorizontalContentAlignment="Stretch"
Content="{Binding Valori,Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" />
</StackPanel>
</Flyout>
</FlyoutBase.AttachedFlyout>
</FontIcon>
谢谢你。
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