How to disable expanding/collapsing of tree items in WPF TreeView on double-click
0
How can I disable tree items collapsing/expanding when I double-click on tree item? I still would like to do this by clicking on toggle button, but not when I double-click on item.
This is XAML I have:
<TreeView Grid.Column="0" Grid.Row="0" ItemsSource="{Binding Categories}" helpers:TreeViewHelper.SelectedItem="{Binding SelectedCategory, Mode=TwoWay}" >
<TreeView.ItemContainerStyle>
<Style TargetType="{x:Type TreeViewItem}">
<Setter Property="IsExpanded" Value="True"/>
</Style>
</TreeView.ItemContainerStyle>
<TreeView.ItemTemplate>
<HierarchicalDataTemplate DataType="{x:Type core:Category}" ItemsSource="{Binding SubCategories}">
<Label Content="{Binding Name}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDoubleClick">
<i:InvokeCommandAction Command="{Binding RelativeSource={RelativeSource AncestorType=Window}, Path=DataContext.CreateGroupsFromCategoryCommand , Mode=OneWay}" CommandParameter="{Binding}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</Label>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
I would like to do this only in XAML.
Thank you for your help.
wpf xaml mvvm treeview expand
asked Nov 25 '18 at 9:45
bacil82bacil82
11
add a comment |
0
How can I disable tree items collapsing/expanding when I double-click on tree item? I still would like to do this by clicking on toggle button, but not when I double-click on item.
This is XAML I have:
<TreeView Grid.Column="0" Grid.Row="0" ItemsSource="{Binding Categories}" helpers:TreeViewHelper.SelectedItem="{Binding SelectedCategory, Mode=TwoWay}" >
<TreeView.ItemContainerStyle>
<Style TargetType="{x:Type TreeViewItem}">
<Setter Property="IsExpanded" Value="True"/>
</Style>
</TreeView.ItemContainerStyle>
<TreeView.ItemTemplate>
<HierarchicalDataTemplate DataType="{x:Type core:Category}" ItemsSource="{Binding SubCategories}">
<Label Content="{Binding Name}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDoubleClick">
<i:InvokeCommandAction Command="{Binding RelativeSource={RelativeSource AncestorType=Window}, Path=DataContext.CreateGroupsFromCategoryCommand , Mode=OneWay}" CommandParameter="{Binding}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</Label>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
I would like to do this only in XAML.
Thank you for your help.
wpf xaml mvvm treeview expand
asked Nov 25 '18 at 9:45
bacil82bacil82
11
add a comment |
0
0
0
1
How can I disable tree items collapsing/expanding when I double-click on tree item? I still would like to do this by clicking on toggle button, but not when I double-click on item.
This is XAML I have:
<TreeView Grid.Column="0" Grid.Row="0" ItemsSource="{Binding Categories}" helpers:TreeViewHelper.SelectedItem="{Binding SelectedCategory, Mode=TwoWay}" >
<TreeView.ItemContainerStyle>
<Style TargetType="{x:Type TreeViewItem}">
<Setter Property="IsExpanded" Value="True"/>
</Style>
</TreeView.ItemContainerStyle>
<TreeView.ItemTemplate>
<HierarchicalDataTemplate DataType="{x:Type core:Category}" ItemsSource="{Binding SubCategories}">
<Label Content="{Binding Name}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDoubleClick">
<i:InvokeCommandAction Command="{Binding RelativeSource={RelativeSource AncestorType=Window}, Path=DataContext.CreateGroupsFromCategoryCommand , Mode=OneWay}" CommandParameter="{Binding}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</Label>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
I would like to do this only in XAML.
Thank you for your help.
wpf xaml mvvm treeview expand
asked Nov 25 '18 at 9:45
bacil82bacil82
11
How can I disable tree items collapsing/expanding when I double-click on tree item? I still would like to do this by clicking on toggle button, but not when I double-click on item.
This is XAML I have:
<TreeView Grid.Column="0" Grid.Row="0" ItemsSource="{Binding Categories}" helpers:TreeViewHelper.SelectedItem="{Binding SelectedCategory, Mode=TwoWay}" >
<TreeView.ItemContainerStyle>
<Style TargetType="{x:Type TreeViewItem}">
<Setter Property="IsExpanded" Value="True"/>
</Style>
</TreeView.ItemContainerStyle>
<TreeView.ItemTemplate>
<HierarchicalDataTemplate DataType="{x:Type core:Category}" ItemsSource="{Binding SubCategories}">
<Label Content="{Binding Name}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDoubleClick">
<i:InvokeCommandAction Command="{Binding RelativeSource={RelativeSource AncestorType=Window}, Path=DataContext.CreateGroupsFromCategoryCommand , Mode=OneWay}" CommandParameter="{Binding}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</Label>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
I would like to do this only in XAML.
Thank you for your help.
wpf xaml mvvm treeview expand
wpf xaml mvvm treeview expand
asked Nov 25 '18 at 9:45
bacil82bacil82
11
asked Nov 25 '18 at 9:45
bacil82bacil82
11
asked Nov 25 '18 at 9:45
bacil82bacil82
11
asked Nov 25 '18 at 9:45
bacil82bacil82
11
asked Nov 25 '18 at 9:45
bacil82bacil82
11
11
add a comment |
add a comment |
1 Answer
1
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oldest
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0
You should suppress the double click event on treeviewitem:
<TreeView Grid.Column="0" Grid.Row="0" ItemsSource="{Binding Categories}" helpers:TreeViewHelper.SelectedItem="{Binding SelectedCategory, Mode=TwoWay}" TreeViewItem.PreviewMouseDoubleClick="TreeViewItem_PreviewMouseDoubleClick" >
<TreeView.ItemContainerStyle>
<Style TargetType="{x:Type TreeViewItem}">
<Setter Property="IsExpanded" Value="True"/>
</Style>
</TreeView.ItemContainerStyle>
<TreeView.ItemTemplate>
<HierarchicalDataTemplate DataType="{x:Type core:Category}" ItemsSource="{Binding SubCategories}">
<Label Content="{Binding Name}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDoubleClick">
<i:InvokeCommandAction Command="{Binding RelativeSource={RelativeSource AncestorType=Window}, Path=DataContext.CreateGroupsFromCategoryCommand , Mode=OneWay}" CommandParameter="{Binding}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</Label>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
Code Behind:
private void TreeViewItem_PreviewMouseDoubleClick(object sender, MouseButtonEventArgs e)
{
//this will suppress the event that is causing the nodes to expand/contract
e.Handled = true;
}
answered Nov 25 '18 at 15:45
RajNRajN
3,66521021
This is unfortunatelly not working as expected. I have special functionality on double-click via event trigger, and using this approach, the command invocation is supressed as well. Other problem is, that if you click fast multiple times on item, the item is ocassionaly still collapsed/expanded
– bacil82
Nov 26 '18 at 18:51
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
You should suppress the double click event on treeviewitem:
<TreeView Grid.Column="0" Grid.Row="0" ItemsSource="{Binding Categories}" helpers:TreeViewHelper.SelectedItem="{Binding SelectedCategory, Mode=TwoWay}" TreeViewItem.PreviewMouseDoubleClick="TreeViewItem_PreviewMouseDoubleClick" >
<TreeView.ItemContainerStyle>
<Style TargetType="{x:Type TreeViewItem}">
<Setter Property="IsExpanded" Value="True"/>
</Style>
</TreeView.ItemContainerStyle>
<TreeView.ItemTemplate>
<HierarchicalDataTemplate DataType="{x:Type core:Category}" ItemsSource="{Binding SubCategories}">
<Label Content="{Binding Name}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDoubleClick">
<i:InvokeCommandAction Command="{Binding RelativeSource={RelativeSource AncestorType=Window}, Path=DataContext.CreateGroupsFromCategoryCommand , Mode=OneWay}" CommandParameter="{Binding}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</Label>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
Code Behind:
private void TreeViewItem_PreviewMouseDoubleClick(object sender, MouseButtonEventArgs e)
{
//this will suppress the event that is causing the nodes to expand/contract
e.Handled = true;
}
answered Nov 25 '18 at 15:45
RajNRajN
3,66521021
This is unfortunatelly not working as expected. I have special functionality on double-click via event trigger, and using this approach, the command invocation is supressed as well. Other problem is, that if you click fast multiple times on item, the item is ocassionaly still collapsed/expanded
– bacil82
Nov 26 '18 at 18:51
add a comment |
0
You should suppress the double click event on treeviewitem:
<TreeView Grid.Column="0" Grid.Row="0" ItemsSource="{Binding Categories}" helpers:TreeViewHelper.SelectedItem="{Binding SelectedCategory, Mode=TwoWay}" TreeViewItem.PreviewMouseDoubleClick="TreeViewItem_PreviewMouseDoubleClick" >
<TreeView.ItemContainerStyle>
<Style TargetType="{x:Type TreeViewItem}">
<Setter Property="IsExpanded" Value="True"/>
</Style>
</TreeView.ItemContainerStyle>
<TreeView.ItemTemplate>
<HierarchicalDataTemplate DataType="{x:Type core:Category}" ItemsSource="{Binding SubCategories}">
<Label Content="{Binding Name}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDoubleClick">
<i:InvokeCommandAction Command="{Binding RelativeSource={RelativeSource AncestorType=Window}, Path=DataContext.CreateGroupsFromCategoryCommand , Mode=OneWay}" CommandParameter="{Binding}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</Label>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
Code Behind:
private void TreeViewItem_PreviewMouseDoubleClick(object sender, MouseButtonEventArgs e)
{
//this will suppress the event that is causing the nodes to expand/contract
e.Handled = true;
}
answered Nov 25 '18 at 15:45
RajNRajN
3,66521021
This is unfortunatelly not working as expected. I have special functionality on double-click via event trigger, and using this approach, the command invocation is supressed as well. Other problem is, that if you click fast multiple times on item, the item is ocassionaly still collapsed/expanded
– bacil82
Nov 26 '18 at 18:51
add a comment |
0
0
0
You should suppress the double click event on treeviewitem:
<TreeView Grid.Column="0" Grid.Row="0" ItemsSource="{Binding Categories}" helpers:TreeViewHelper.SelectedItem="{Binding SelectedCategory, Mode=TwoWay}" TreeViewItem.PreviewMouseDoubleClick="TreeViewItem_PreviewMouseDoubleClick" >
<TreeView.ItemContainerStyle>
<Style TargetType="{x:Type TreeViewItem}">
<Setter Property="IsExpanded" Value="True"/>
</Style>
</TreeView.ItemContainerStyle>
<TreeView.ItemTemplate>
<HierarchicalDataTemplate DataType="{x:Type core:Category}" ItemsSource="{Binding SubCategories}">
<Label Content="{Binding Name}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDoubleClick">
<i:InvokeCommandAction Command="{Binding RelativeSource={RelativeSource AncestorType=Window}, Path=DataContext.CreateGroupsFromCategoryCommand , Mode=OneWay}" CommandParameter="{Binding}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</Label>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
Code Behind:
private void TreeViewItem_PreviewMouseDoubleClick(object sender, MouseButtonEventArgs e)
{
//this will suppress the event that is causing the nodes to expand/contract
e.Handled = true;
}
answered Nov 25 '18 at 15:45
RajNRajN
3,66521021
You should suppress the double click event on treeviewitem:
<TreeView Grid.Column="0" Grid.Row="0" ItemsSource="{Binding Categories}" helpers:TreeViewHelper.SelectedItem="{Binding SelectedCategory, Mode=TwoWay}" TreeViewItem.PreviewMouseDoubleClick="TreeViewItem_PreviewMouseDoubleClick" >
<TreeView.ItemContainerStyle>
<Style TargetType="{x:Type TreeViewItem}">
<Setter Property="IsExpanded" Value="True"/>
</Style>
</TreeView.ItemContainerStyle>
<TreeView.ItemTemplate>
<HierarchicalDataTemplate DataType="{x:Type core:Category}" ItemsSource="{Binding SubCategories}">
<Label Content="{Binding Name}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDoubleClick">
<i:InvokeCommandAction Command="{Binding RelativeSource={RelativeSource AncestorType=Window}, Path=DataContext.CreateGroupsFromCategoryCommand , Mode=OneWay}" CommandParameter="{Binding}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</Label>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
Code Behind:
private void TreeViewItem_PreviewMouseDoubleClick(object sender, MouseButtonEventArgs e)
{
//this will suppress the event that is causing the nodes to expand/contract
e.Handled = true;
}
answered Nov 25 '18 at 15:45
RajNRajN
3,66521021
answered Nov 25 '18 at 15:45
RajNRajN
3,66521021
answered Nov 25 '18 at 15:45
RajNRajN
3,66521021
answered Nov 25 '18 at 15:45
RajNRajN
3,66521021
3,66521021
This is unfortunatelly not working as expected. I have special functionality on double-click via event trigger, and using this approach, the command invocation is supressed as well. Other problem is, that if you click fast multiple times on item, the item is ocassionaly still collapsed/expanded
– bacil82
Nov 26 '18 at 18:51
add a comment |
This is unfortunatelly not working as expected. I have special functionality on double-click via event trigger, and using this approach, the command invocation is supressed as well. Other problem is, that if you click fast multiple times on item, the item is ocassionaly still collapsed/expanded
– bacil82
Nov 26 '18 at 18:51
This is unfortunatelly not working as expected. I have special functionality on double-click via event trigger, and using this approach, the command invocation is supressed as well. Other problem is, that if you click fast multiple times on item, the item is ocassionaly still collapsed/expanded
– bacil82
Nov 26 '18 at 18:51
This is unfortunatelly not working as expected. I have special functionality on double-click via event trigger, and using this approach, the command invocation is supressed as well. Other problem is, that if you click fast multiple times on item, the item is ocassionaly still collapsed/expanded
– bacil82
Nov 26 '18 at 18:51
add a comment |
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