In an WPF ListView
I have ListViewItem
s that consist of three columns, first column is an auto-increment column, second one is a TextBox
and the last one contains two buttons (Edit and Delete) in the same column.
My ListView
now looks as below:
<ListView x:Name="MyListView"
AlternationCount="{Binding pathList.Count}"
ItemsSource="{Binding pathList}"
IsSynchronizedWithCurrentItem="True">
<ListView.View>
<GridView>
<GridViewColumn Header="#" x:Name="LvItemId"
DisplayMemberBinding="{Binding (ItemsControl.AlternationIndex),
RelativeSource={RelativeSource AncestorType=ListViewItem}}"/>
<GridViewColumn Header="Command sentence" Width="350" CellTemplate="{StaticResource NameColumnTemplate}"/>
<GridViewColumn Width="70" Header="Edit / Delete" CellTemplate="{StaticResource AddDelItemTemplate}"/>
</GridView>
</ListView.View>
</ListView>
Below the CellTemplate
s:
<DataTemplate x:Key="FirstRowTemplate1">
<Grid Width="190">
<Button Content="Add" Command="{Binding Path=DataContext.AddCommand, ElementName=MyListView}"
Width="180"
HorizontalAlignment="Center"/>
</Grid>
</DataTemplate>
<DataTemplate x:Key="NextRowTemplate1">
<TextBox Text="{Binding PathString}"/>
</DataTemplate>
<DataTemplate x:Key="NameColumnTemplate">
<ContentPresenter x:Name="ButtonPresenter"
Content="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Content}"
ContentTemplate="{StaticResource NextRowTemplate1}"/>
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding Add}" Value="True">
<Setter TargetName="ButtonPresenter"
Property="ContentTemplate"
Value="{StaticResource FirstRowTemplate1}"/>
</DataTrigger>
<DataTrigger Binding="{Binding Add}" Value="False">
<Setter TargetName="ButtonPresenter"
Property="ContentTemplate"
Value="{StaticResource NextRowTemplate1}"/>
</DataTrigger>
</DataTemplate.Triggers>
</DataTemplate>
<DataTemplate x:Key="FirstRowTemplate2"/>
<DataTemplate x:Key="NextRowTemplate2">
<StackPanel Orientation="Horizontal">
<Button Content="Edit" Command="{Binding Path=DataContext.EditCommand, ElementName=MyListView}" CommandParameter="{Binding ElementName=LvItemId, Path=WhatToPutHere}"/>
<Button Content="Delete" Command="{Binding Path=DataContext.DelCommand, ElementName=MyListView}" CommandParameter="{Binding ElementName=LvItemId, Path=WhatToPutHere}"/>
</StackPanel>
</DataTemplate>
<DataTemplate x:Key="AddDelItemTemplate">
<ContentPresenter x:Name="ButtonPresenter"
Content="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Content}"
ContentTemplate="{StaticResource NextRowTemplate2}"/>
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding Add}" Value="True">
<Setter TargetName="ButtonPresenter"
Property="ContentTemplate"
Value="{StaticResource FirstRowTemplate2}"/>
</DataTrigger>
<DataTrigger Binding="{Binding Add}" Value="False">
<Setter TargetName="ButtonPresenter"
Property="ContentTemplate"
Value="{StaticResource NextRowTemplate2}"/>
</DataTrigger>
</DataTemplate.Triggers>
</DataTemplate>
When Edit or Delete button are clicked I want to pass in as a command parameter the value that first GridViewColumn
has for that ListViewItem
. How can I do this?
For example:
<Button Content="Edit" Command="{Binding Path=DataContext.EditCommand, ElementName=MyListView}" CommandParameter="{Binding ElementName=LvItemId, Path=WhatToPutHere}"/>
<Button Content="Delete" Command="{Binding Path=DataContext.DelCommand, ElementName=MyListView}" CommandParameter="{Binding ElementName=LvItemId, Path=WhatToPutHere}"/>
CodePudding user response:
The GridViewColumn
defines the column itself, how it is populated, e.g. template, binding or width, but it does not have a reference to any of the items generated by the item container generator.
In case of the first column you can copy the binding for the attached property AlternationIndex
:
<Button Content="Edit" Command="{Binding (ItemsControl.AlternationIndex), RelativeSource={RelativeSource AncestorType=ListViewItem}}"/>
<Button Content="Delete" Command="{Binding (ItemsControl.AlternationIndex), RelativeSource={RelativeSource AncestorType=ListViewItem}}"/>