I have listbox inside popup. How would I close popup right after I select item from list box;
here is code:
<Popup x:Name="ColorPopup" AllowsTransparency="True"
IsOpen="{Binding ElementName=ColorToggle, Path=IsChecked}" Placement="Bottom" StaysOpen="False" PlacementTarget="{Binding ElementName=ColorToggle}">
<Border x:Name="DropDownBorder1" BorderBrush="{DynamicResource {x:Static SystemColors.WindowFrameBrushKey}}" Margin="0, 0,5,5" BorderThickness="1" Background="{DynamicResource {x:Static SystemColors.WindowBrushKey}}" Effect="{DynamicResource WindowShadowEffect}">
<ListBox Name="ColorList" VerticalContentAlignment="Stretch" Margin="1, 3, 1, 3" IsEnabled="True" Grid.Column="0" Background="Transparent" HorizontalContentAlignment="Center" SelectedItem="{Binding fColor}" SelectionMode="Single" Style="{StaticResource HorizontalListBoxStyle2}" ItemsSource="{Binding FillColors}">
</ListBox>
</Border>
</Popup>
Subscribe to SelectionChanged event.
you can either do it in code-behind:
private void ListBox_SelectionChanged_1(object sender, SelectionChangedEventArgs e)
{
// ColorPopup.IsOpen = false; ?? or ColorToggle.IsChecked = false;
}
<ListBox SelectionChanged="ListBox_SelectionChanged_1" ... />
or maybe if you use MVVM pattern...
It could be something like this for example for MVVM-Light:
<ListBox ...>
<i:Interaction.Triggers>
<i:EventTrigger EventName="SelectionChanged">
<cmd:EventToCommand Command="{Binding Path=ClosePopupCommand}" PassEventArgsToCommand="True" />
</i:EventTrigger>
</i:Interaction.Triggers>
</ListBox>
Or Prism could be almost the same :
<ListBox>
<i:Interaction.Triggers>
<i:EventTrigger EventName="SelectionChanged">
<prism:InvokeCommandAction Command="{Binding Path=ClosePupupCommand}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</ListBox>
Or if you have dirty mind you could also close popup in fColor property setter. :)
public object fColor
{
get
{
return this.fColorField;
}
set
{
this.fColorField= value;
IsColorToggelChecked = false;
RaisePropertyChanged(() => this.fColor);
}
}
Related
I get this error :
System.Windows.Data Error: 40 : BindingExpression path error: 'OpenPopupCommand' property not found on 'object' ''String' (HashCode=62725275)'. BindingExpression:Path=OpenPopupCommand; DataItem='String'
when I added a parameter to my command:
OpenPopupCommand = new RelayParamCommand((e) => PopupVisibility(FilterButton) );
VM:
private void PopupVisibility(object sender)
{
Console.WriteLine(sender.ToString());
PopupVisible ^= true;
}
Think is that I added Filter Button to Datagrid Headers which are generated automatically. Now I want to open popup when button is clicked. But think is that is not working, because i have to pass button by buttons x:Name to Popup PlacementTarget parameter.
<Page.DataContext>
<PDB:UsersViewModel x:Name="vm"/>
</Page.DataContext>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<!--Page Header info content-->
<Grid Grid.Row="0">
<StackPanel Orientation="Horizontal">
<TextBlock Margin="2" Text="{Binding ElementName=userPage, Path=Name}"/>
<TextBlock Margin="2" Text="{Binding SelectedUser.Name}"/>
<TextBlock Margin="2" Text="{Binding ElementName=myGrd, Path=CurrentColumn.DisplayIndex}"/>
<Button x:Name="mybtn"
Content="{Binding Filters.Count, Mode=OneWay}"
Visibility="{Binding Filters.Count, Converter={Wpf:VisibilityConverter}}"
/>
</StackPanel>
</Grid>
<!--Datagrid content-->
<DataGrid x:Name="myGrd"
SelectionMode="Single"
SelectionUnit="Cell"
CurrentItem="{Binding SelectedUser, Mode=TwoWay}"
CurrentColumn="{Binding CurrentColumn, Mode=TwoWay}"
IsReadOnly="True"
Grid.Row="1"
ItemsSource="{Binding FilteredUserList}"
AutoGenerateColumns="True"
CanUserAddRows="False"
>
<DataGrid.Resources>
<!--Popup-->
<ContextMenu x:Key="ContextMenu">
<ContextMenu.Items>
<MenuItem Header="Filter by Selection" Command="{Binding IncludeCommand, Source={x:Reference vm}}"/>
<MenuItem Header="Filter exclude Selection" Command="{Binding ExcludeCommand, Source={x:Reference vm}}"/>
<MenuItem Header="Remove all Filters" Command="{Binding RemoveAllFiltersCommand, Source={x:Reference vm}}" Visibility="{Binding Filters.Count, Source={x:Reference vm}, Converter={Wpf:VisibilityConverter}}"/>
</ContextMenu.Items>
</ContextMenu>
<!--Custom Datagrid header View-->
<Style TargetType="DataGridColumnHeader" x:Name="FilterHeader">
<Setter Property="ContentTemplate">
<Setter.Value>
<DataTemplate>
<StackPanel>
<TextBox Margin="0,0,0,10" Width="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGridColumnHeader}}, Path=Width}" />
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding}" HorizontalAlignment="Center"/>
<Button Name="FilterButton"
Content="[-F-]"
Command="{Binding OpenPopupCommand}"
CommandParameter="{Binding ElementName=FilterButton}"/>
<Popup Name="MyPopup"
StaysOpen="False"
Placement="Right"
IsOpen="{Binding PopupVisible}"
PlacementTarget="{Binding FilterButton}">
<Border Background="White" BorderBrush="Black" Padding="5" BorderThickness="2" CornerRadius="5">
<StackPanel Orientation="Vertical">
</StackPanel>
</Border>
</Popup>
</StackPanel>
</StackPanel>
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
</DataGrid.Resources>
<DataGrid.CellStyle>
<Style TargetType="DataGridCell">
<Setter Property="ContextMenu" Value="{StaticResource ContextMenu}"/>
</Style>
</DataGrid.CellStyle>
</DataGrid>
</Grid>
By this approach i want to pass clicked button as parameter to VM and bind it to Popup PlacementTarget parameter. What i am doing wrong? Can i pass clicked button parameter? I know i break mvvm rules when passing view to vm, but how to achieve what i want, when i don't want to define every column in datagrid. Thank you
Your bindings have the DataContext of the DataGridColumnHeader as source which is the value of DataGridColumn.Header. This value in your case is a string and not your expected view model. This is the reason why your bindings doesn't resolve and you get the error message (which is exactly telling you this).
To fix the binding you have to find the next parent element that has the required DataContext, which is I assume the DataGrid:
<Button Name="FilterButton"
Content="[-F-]"
Command="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=DataGrid}, Path=DataContext.OpenPopupCommand}"
CommandParameter="{Binding RelativeSource={RelativeSource Self}}"/>
When checking your code I can see the command which is bound to the Button is toggling the PopupVisible property. I therefore suggest to remove this view related code from the view model and replace the Button with a ToggleButton which binds directly to the Popup.IsOpen:
<!--Custom Datagrid header View-->
<Style TargetType="DataGridColumnHeader">
<Setter Property="ContentTemplate">
<Setter.Value>
<DataTemplate>
<StackPanel>
<TextBox Margin="0,0,0,10"
Width="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGridColumnHeader}}, Path=Width}" />
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding}"
HorizontalAlignment="Center" />
<ToggleButton Name="FilterButton"
Content="[-F-]" />
<Popup Name="MyPopup"
StaysOpen="False"
Placement="Right"
IsOpen="{Binding ElementName=FilterButton, Path=IsChecked}"
PlacementTarget="{Binding ElementName=FilterButton}">
<Border Background="White"
BorderBrush="Black"
Padding="5"
BorderThickness="2"
CornerRadius="5">
<StackPanel Orientation="Vertical">
</StackPanel>
</Border>
</Popup>
</StackPanel>
</StackPanel>
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
To get the cell values of all rows contained in a single column where the column header value is the parameter and maps to a property name requires reflection. You need to bind a ListView to the resulting column value collection which uses an ItemTemplate to add a CheckBox to the item. The final version should be as follows:
<!--Custom Datagrid header View-->
<Style TargetType="DataGridColumnHeader">
<Setter Property="ContentTemplate">
<Setter.Value>
<DataTemplate>
<StackPanel>
<TextBox Margin="0,0,0,10"
Width="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGridColumnHeader}}, Path=Width}" />
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding RelativeSource={RelativeSource Self}}"
HorizontalAlignment="Center" />
<ToggleButton Name="FilterButton"
Content="[-F-]"
Command="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=DataGrid}, Path=DataContext.(UsersViewModel.GenerateFilterViewItemsCommand)}"
CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=DataGridColumnHeader}, Path=Content}" />
<Popup Name="MyPopup"
StaysOpen="False"
Placement="Right"
IsOpen="{Binding ElementName=FilterButton, Path=IsChecked}"
PlacementTarget="{Binding ElementName=FilterButton}">
<Border Background="White"
BorderBrush="Black"
Padding="5"
BorderThickness="2"
CornerRadius="5">
<ListView
ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=DataGrid}, Path=DataContext.(UsersViewModel.FilterViewItems)}">
<ListView.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<CheckBox IsChecked="{Binding IsIncluded, Mode=OneWayToSource}"
Command="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=DataGrid}, Path=DataContext.(UsersViewModel.IncludeItemCommand)}"
CommandParameter="{Binding}" />
<ContentPresenter Content="{Binding CellValue}" />
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</Border>
</Popup>
</StackPanel>
</StackPanel>
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
To map the filter list to the actual items requires an additional type to hold the information:
Predicate.cs
public class FilterPredicate
{
public FilterPredicate(int rowIndex, object cellValue, object columnKey)
{
this.RowIndex = rowIndex;
this.CellValue = cellValue;
this.ColumnKey = columnKey;
}
public int RowIndex { get; set; }
public object CellValue { get; set; }
public bool IsIncluded { get; set; }
public object ColumnKey { get; set; }
}
You also need to add a collection for the filter view and one for the included item indices to the view model:
UsersViewModel.cs
public class UsersViewModel
{
public UsersViewModel()
{
this.FilterViewItems = new ObservableCollection<FilterPredicate>();
this.IncludedItemsIndex = new Dictionary<object, List<int>>();
}
// The binding source for the Popup filter view
public ObservableCollection<FilterPredicate> FilterViewItems { get; set; }
private Dictionary<object, List<int>> IncludedItemsIndex { get; set; }
public ICommand GenerateFilterViewItemsCommand => new RelayParamCommand((param) =>
{
var columnHeader = param as string;
this.IncludedItemsIndex.Remove(columnHeader);
this.FilterViewItems.Clear();
for (var rowIndex = 0; rowIndex < this.FilteredUserList.Count; rowIndex++)
{
var data = this.FilteredUserList.ElementAt(rowIndex);
var columnValue = data.GetType()
.GetProperty(columnHeader, BindingFlags.Public | BindingFlags.Instance)?
.GetValue(data);
if (columnValue != null)
{
this.FilterViewItems.Add(new FilterPredicate(rowIndex, columnValue, columnValue));
}
}
});
public ICommand IncludeItemCommand => new RelayParamCommand((param) =>
{
var predicate = param as FilterPredicate;
if (predicate.IsIncluded)
{
if (!this.IncludedItemsIndex.TryGetValue(predicate.ColumnKey, out List<int> includedIndices))
{
includedIndices = new List<int>();
this.IncludedItemsIndex.Add(predicate.ColumnKey, includedIndices);
}
includedIndices.Add(predicate.RowIndex);
}
else
{
if (this.IncludedItemsIndex.TryGetValue(predicate.ColumnKey, out List<int> includedIndices))
{
includedIndices.Remove(predicate.RowIndex);
}
}
// Apply the filter
CollectionViewSource.GetDefaultView(this.FilteredUserList).Filter =
data => this.IncludedItemsIndex.Values
.SelectMany(indices => indices)
.Contains(this.FilteredUserList.IndexOf(data as FilteredUser));
});
}
Since you are autogenerating columns, I strongly suspect it is trying to find a OpenPopupCommand in one of the string properties on the items for FilteredUserList.
Try The Following :
Give you'r Page or DataGrid a Name, And change your Binding to
<MenuItem Command="{Binding Path=DataContext.IncludeCommand, Source={x:Reference myPage}}"/>
I have Custom control which uses control template as shown in below code block. I need to show popup when user left clicks on the control. Once he/she clicks outside the pop up, it should close.
With MouseLeftButtonUp, the pop up is displayed however stays open on clicking outside the popup.
Please note I have set focus on on popup listbox element as soon as pop opens using behaviours:Focus
<ControlTemplate x:Key="ControlWithPopup" TargetType="local:CustomizedControl">
<Border HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseLeftButtonUp">
<ei:ChangePropertyAction
PropertyName="IsDropDownOpen"
TargetObject="{Binding RelativeSource={RelativeSource Mode=TemplatedParent}}"
Value="True" />
</i:EventTrigger>
</i:Interaction.Triggers>
<Grid>
<Popup
x:Name="Popup1"
Width="100"
MinWidth="80"
MaxHeight="300"
AllowsTransparency="true"
IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource Mode=TemplatedParent}, Mode=TwoWay}"
Placement="Center"
PlacementTarget="{Binding RelativeSource={RelativeSource Mode=TemplatedParent}}"
PopupAnimation="Fade"
StaysOpen="False">
<Border
Background="{DynamicResource SomeBackgroundBrush}"
BorderBrush="{DynamicResource SomeBorderBrush}"
BorderThickness="1"
TextElement.Foreground="{DynamicResource SomeFontBrush}">
<ListBox
x:Name="List1"
ItemTemplate="{TemplateBinding DropDownTemplate}"
ItemsSource="{Binding Path=ListSource, RelativeSource={RelativeSource Mode=TemplatedParent}}"
ScrollViewer.CanContentScroll="False"
ScrollViewer.HorizontalScrollBarVisibility="Disabled"
SelectedItem="{Binding Path=SelectedItem, RelativeSource={RelativeSource Mode=TemplatedParent}, Mode=TwoWay}"
Style="{DynamicResource ListBoxNormalStyle}"
VirtualizingPanel.IsVirtualizing="False">
</ListBox>
</Border>
<i:Interaction.Triggers>
<ei:DataTrigger Binding="{Binding IsOpen, ElementName=Popup1}" Value="True">
<behaviours:ScrollIntoCenterView TargetObject="{Binding ElementName=List1}" />
<behaviours:Focus TargetObject="{Binding ElementName=List1}" />
</ei:DataTrigger>
</i:Interaction.Triggers>
</Popup>
<Border
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Background="Transparent"
BorderThickness="1">
<TextBlock
x:Name="Presenter"
HorizontalAlignment="Center"
VerticalAlignment="Center"
FontSize="11"
FontWeight="ExtraBold"
Text="{Binding SelectedValue}" />
</Border>
</Grid>
</Border>
</ControlTemplate>
Note -
- Also note, i dont want to set StayOpen to True due to some reason outside the scope of the problem. I want to achieve it using StayOpen set to False
I am using System.Windows.Interactivity and i have to display a Message on mouse enter event.
The problem is the same event is called when done outside the ListView, But it gets not called when inside the ListView.
I tried doing so using mvvm approach:
<Grid>
<StackPanel Grid.Row="1" Grid.Column="1" Name="events1">
//This Event works outside the ListView but not inside ListView
<Rectangle Fill="Yellow" Stroke="Black" Width="100" Height="30">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseEnter">
<i:InvokeCommandAction Command="{Binding SomeCommand}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</Rectangle>
<ListView BorderBrush="#FF1D93E4" BorderThickness="4" Behaviour:GridViewColumnResize.Enabled="True" ScrollViewer.VerticalScrollBarVisibility="Auto" SelectedItem="{Binding SelectedItem ,Mode=TwoWay}" ItemsSource="{Binding Ur1r2_Obj}" HorizontalContentAlignment="Stretch">
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch" />
</Style>
</ListView.ItemContainerStyle>
<ListView.View>
<GridView>
<GridViewColumn Header="State" Behaviour:GridViewColumnResize.Width="*">
<GridViewColumn.CellTemplate>
<DataTemplate>
<Grid Background="{Binding Converter={StaticResource colorToBrushConverter}}">
//The event do not work here
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseEnter">
<i:InvokeCommandAction Command="{Binding SomeCommand}" />
</i:EventTrigger>
</i:Interaction.Triggers>
<Button Margin="35,0,0,0" HorizontalAlignment="Center" Content="{Binding Path=Etat, Mode=OneWay}" Background="{Binding Converter={StaticResource colorToBrushConverter}}" />
</Grid>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
</StackPanel>
</Grid>
In view Model
private ICommand someCommand;
public ICommand SomeCommand
{
get
{
//return plotButton;
return someCommand ?? (someCommand = new CommandHandler(() => MyAction2(), _canExecute));
}
set
{
someCommand = value;
OnPropertyChanged("SomeCommand");
}
}
private void MyAction2() //Messsage is popuped on Moseenter event when i try to hover mouse over rectangle outside the listview , But not get called when inside the Listview
{
MessageBox.Show("Yeah Called");
}
Why it event is not called from inside the ListView. How to make it call ?
If you are trying to invoke the same command (SomeCommand) you should specify a RelativeSource of the Binding:
<Grid Background="{Binding Converter={StaticResource colorToBrushConverter}}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseEnter">
<i:InvokeCommandAction Command="{Binding DataContext.SomeCommand,
RelativeSource={RelativeSource AncestorType=ListView}}" />
</i:EventTrigger>
</i:Interaction.Triggers>
<Button Margin="35,0,0,0" HorizontalAlignment="Center" Content="{Binding Path=Etat, Mode=OneWay}" Background="{Binding Converter={StaticResource colorToBrushConverter}}" />
</Grid>
The DataContext of an item in the ListView is an object in your "Ur1r2_Obj" ItemsSource whereas the DataContext of the Rectangle is your view model. That's why the binding fails in your CellTemplate.
I'm having DataGrid, the Grid has a Filter Functioning. The Filter Icon Button is styled as DataGridColumnHeader in app.xaml and I attached the style to my DataGrid. If the Button gets Click, then it opens a Filter Popup to perform Filter. The Popup is designed in a Parent View XAML.
The DataGrid View XAML inherits the Parent View XAML. Now I need to set the ElementName=autoFilter in Popup or ElementName=popFilter in Filter Icon Button. I Can't able to call the control using TargetObject of ChangePropertyAction in WPF. Kindly assist.
The DataGrid View: gridView.xaml
<DataGrid Name="EmpList" ColumnHeaderStyle="{StaticResource FilterDataGridColumnHeader}" AutoGenerateColumns="False" ItemsSource="{Binding EmpList}">
<DataGrid.Columns>
<DataGridTextColumn Binding="{Binding Name}" Header="Employee Name" ElementStyle="{StaticResource DataGridElementStyle}" />
<DataGridTextColumn Binding="{Binding Age}" Header="Employee Age" ElementStyle="{StaticResource DataGridElementStyle}" />
</DataGrid.Columns>
</DataGrid>
Parent View Contains Popup: MainView.xaml
<Popup Name="popFilter" Placement="Mouse" StaysOpen="False" Width="200" IsOpen="{Binding IsPopupFilterOpen, Mode=TwoWay}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="Opened">
<ei:ChangePropertyAction TargetObject="{Binding ElementName=autofilter}" PropertyName="Visibility"/>
</i:EventTrigger>
<i:EventTrigger EventName="Closed">
<ei:ChangePropertyAction TargetObject="{Binding ElementName=autofilter}" PropertyName="Visibility">
<ei:ChangePropertyAction.Value>
<Visibility>Collapsed</Visibility>
</ei:ChangePropertyAction.Value>
</ei:ChangePropertyAction>
</i:EventTrigger>
</i:Interaction.Triggers>
<Border Background="White" BorderBrush="Gray" BorderThickness="1,1,1,1">
<StackPanel Margin="5,5,5,15">
<TextBlock Text="Welcome to Popup Window" />
</StackPanel>
</Border>
</Popup>
Filter Icon Button in ColumnHeaderStyle : app.xaml
<Application.Resources>
<Style TargetType="{x:Type DataGridColumnHeader}" x:Key="FilterDataGridColumnHeader">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridColumnHeader}">
<Grid>
<Button Grid.Column="2" Background="Yellow">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseEnter">
<ei:ChangePropertyAction TargetObject="{Binding ElementName=autofilter}" PropertyName="Visibility">
<ei:ChangePropertyAction.Value>
<Visibility>Visible</Visibility>
</ei:ChangePropertyAction.Value>
</ei:ChangePropertyAction>
</i:EventTrigger>
<i:EventTrigger EventName="MouseLeave">
<ei:ChangePropertyAction TargetObject="{Binding ElementName=autofilter}" PropertyName="Visibility">
<ei:ChangePropertyAction.Value>
<Visibility>Collapsed</Visibility>
</ei:ChangePropertyAction.Value>
</ei:ChangePropertyAction>
</i:EventTrigger>
<i:EventTrigger EventName="Click">
<ei:ChangePropertyAction TargetObject="{Binding ElementName=popFilter}" PropertyName="IsOpen">
<ei:ChangePropertyAction.Value>True</ei:ChangePropertyAction.Value>
</ei:ChangePropertyAction>
</i:EventTrigger>
</i:Interaction.Triggers>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="20"/>
<ColumnDefinition/>
<ColumnDefinition Width="20"/>
</Grid.ColumnDefinitions>
<ContentPresenter x:Name="contentPresenter" Grid.Column="1"/>
<ContentControl x:Name="autofilter" Visibility="Collapsed" ContentTemplate="{StaticResource FilterButtonStyleKey}" Margin="0 0 3 0"/>
</Grid>
</Button>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Application.Resources>
The Icon Button Image Key: FilterButtonStyleKey
<DataTemplate x:Key="FilterButtonStyleKey">
<Canvas Height="15.898" Width="15.297" HorizontalAlignment="Center" VerticalAlignment="Center" Background="Transparent">
<Path Data="M16.0117,6.7368C18.3417,6.7368,20.6727,6.7358,23.0027,6.7378C23.5327,6.7378,23.5977,6.8308,23.6437,7.3438C23.7027,7.9958,23.4897,8.4748,23.0197,8.9548C21.4107,10.5968,19.8547,12.2888,18.2957,13.9788C18.1647,14.1208,18.1137,14.3828,18.1117,14.5898C18.0987,17.0608,18.1067,19.5308,18.0907,22.0018C18.0887,22.2158,18.0077,22.4968,17.8607,22.6158C17.7697,22.6878,17.4587,22.5408,17.2807,22.4368C16.3057,21.8718,15.3447,21.2788,14.3677,20.7148C14.0637,20.5408,13.9287,20.3278,13.9297,19.9728C13.9407,18.1778,13.9257,16.3848,13.9357,14.5908C13.9367,14.2698,13.8367,14.0388,13.6137,13.8058C12.1347,12.2548,10.6717,10.6898,9.2027,9.1298C9.0967,9.0168,8.9927,8.9018,8.8797,8.7958C8.4137,8.3608,8.2387,7.6118,8.4377,7.0158C8.5277,6.7478,8.7137,6.7358,8.9347,6.7368C10.0937,6.7388,11.2517,6.7378,12.4097,6.7378C13.6107,6.7378,14.8107,6.7378,16.0117,6.7368z" Height="16.898" Canvas.Left="-0.5" StrokeStartLineCap="Round" Stretch="Fill" StrokeEndLineCap="Round" Stroke="#FF323232" StrokeThickness="1" StrokeLineJoin="Round" Canvas.Top="-0.5" Width="16.297"/>
<Path Data="M14.2427,14.3921L17.9117,14.3921" Height="1" Canvas.Left="5.386" StrokeStartLineCap="Round" Stretch="Fill" StrokeEndLineCap="Round" Stroke="#FF323232" StrokeThickness="1" StrokeLineJoin="Round" Canvas.Top="7.156" Width="4.669"/>
</Canvas>
</DataTemplate>
I need to show (Visibility:Visible) the Filter Icon Button while on Mouse Hover Event of the Corresponding Column or If user can click the Filter Icon Button then the Filter Popup gets opened and that time the Icon should show - Filter Popup IsOpen=True state. The Filter Icon Button should Collapsed while on Popup gets closed while on Icon Button Clicked otherwise Mouse Hover is not happened.
Note:
Design the Datagrid in one XAML and the Filter Popup should be in Main
View XAML, The DataGrid XAML inherits the Main View XAML.
The Filter Icon is a Button designed in app.xaml and call the Style in
the DataGrid.
I have this View:
<Grid Margin="10,0,10,10">
<StackPanel>
<wpftoolkit:Accordion
Margin="4"
HorizontalAlignment="Stretch"
Name="accordionCB"
ItemsSource="{Binding Path=ContentBlockCategories}"
SelectionMode="ZeroOrMore">
<wpftoolkit:Accordion.ItemTemplate>
<DataTemplate>
<Grid HorizontalAlignment="Stretch" Margin="0 0 0 4">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBlock
Text="{Binding Description}"
Grid.Column="0" VerticalAlignment="Center" />
</Grid>
</DataTemplate>
</wpftoolkit:Accordion.ItemTemplate>
<wpftoolkit:Accordion.ContentTemplate>
<DataTemplate>
<!--Not Raise MouseDoubleClick Command-->
<ListView
x:Name="lvContentBlocks"
AlternationCount="2"
ItemsSource="{Binding ContentBlocks}"
IsSynchronizedWithCurrentItem="True"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDoubleClick">
<cmd:EventToCommand PassEventArgsToCommand="True" Command="{Binding Path=MouseDoubleClick}" />
</i:EventTrigger>
</i:Interaction.Triggers>
<ListView.ItemTemplate>
<DataTemplate>
<Grid Margin="0,0,0,5">
<StackPanel VerticalAlignment="Top">
<TextBlock Text="{Binding Description}" TextWrapping="Wrap" />
</StackPanel>
</Grid>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</DataTemplate>
</wpftoolkit:Accordion.ContentTemplate>
</wpftoolkit:Accordion>
<!--Raise MouseDoubleClick Command-->
<ListView
x:Name="lvContentBlocks"
AlternationCount="2"
ItemsSource="{Binding ContentBlockCategories}"
IsSynchronizedWithCurrentItem="True"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDoubleClick">
<cmd:EventToCommand Command="{Binding MouseDoubleClick}" PassEventArgsToCommand="True" />
</i:EventTrigger>
</i:Interaction.Triggers>
<ListView.ItemTemplate>
<DataTemplate>
<Grid Margin="0,0,0,5">
<StackPanel VerticalAlignment="Top">
<TextBlock Text="{Binding Description}" TextWrapping="Wrap" />
</StackPanel>
</Grid>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackPanel>
</Grid>
And this ViewModel:
public class MainViewModel : ViewModelBase
{
public ObservableCollection<ContentBlockCategory> ContentBlockCategories
{
get
{
return new ObservableCollection<ContentBlockCategory>
{
new ContentBlockCategory{
Id = 1,
Description = "Category 1",
ContentBlocks = new Collection<ContentBlock>
{
new ContentBlock{
Id = 1,
Description = "Content Block 1",
Text = "Text"
}
}
}
};
}
set
{
RaisePropertyChanged("ContentBlockCategories");
}
}
public RelayCommand<MouseButtonEventArgs> MouseDoubleClick
{
get;
private set;
}
public MainViewModel()
{
MouseDoubleClick = new RelayCommand<MouseButtonEventArgs>(e =>
{
DependencyObject dep = (DependencyObject)e.OriginalSource;
while ((dep != null) && !(dep is ListViewItem))
{
dep = VisualTreeHelper.GetParent(dep);
}
if (dep == null) return;
ContentBlockCategory contentBlockSelected = (ContentBlockCategory)((ListViewItem)dep).DataContext;
});
}
}
The first ListView inside an Accordion not raise the RelayCommand in the ViewModel but the second ListView raise the RelayCommand without any problem.
What's the problem?
Regards
I've had issues with EventToCommand in Templates and Styles an example of the problem can be found here
I have moved to AttachedCommandBehaviors (ACB) in these situations. The link takes you to the C# Diciples on how to use ACB.
A code snip of it's use from my code base:
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListViewItem}">
<StackPanel x:Name="IconBorder"
acb:CommandBehavior.Event="PreviewMouseUp"
acb:CommandBehavior.Command="{Binding Path=DataContext.ClickCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type UserControl}}}"
acb:CommandBehavior.CommandParameter="{Binding}">