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Obtain ListBox SelectedItem through ContextMenu with Multibinding in Windows.Resource

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2

I'm trying to use multibinding on a context menu stored in Window.Resources and I can't figure out how to get the SelectedItem of the ListBox I attach the menu to.

I think I need to use PlacementTarget, but can't get anything to work. I tried using FindAncestor, but that didn't work. I also tried getting the listbox by the ElementName to no avail.

<Window ...>
 <Window.DataContext>
 <local:IPViewModel/>
 </Window.DataContext>
 <Window.Resources>
 <sys:Int32 x:Key="Number">0</sys:Int32>
 <sys:Int32 x:Key="NumberLetter">1</sys:Int32>
 <sys:Int32 x:Key="NumberLetterNumber">2</sys:Int32>

 <local:CombineParams x:Key="CombineParams"/>

 <ContextMenu x:Key="DetailMenu"> 
 <MenuItem Header = "Number">
 <i:Interaction.Triggers> 
 <i:EventTrigger EventName="Click">
 <i:InvokeCommandAction Command="Binding SwitchLabelMode">
 <i:InvokeCommandAction.CommandParameter> 
 <MultiBinding Converter="StaticResource CombineParams">
 <!-- The next line is where I'm not sure what to write to get to the listbox -->
 <Binding Source="RelativeSource AncestorType=x:Type ListBox"/> 
 <Binding Source="StaticResource Number"/>
 </MultiBinding>
 </i:InvokeCommandAction.CommandParameter>
 </i:InvokeCommandAction>
 </i:EventTrigger>
 </i:Interaction.Triggers>
 </MenuItem>
 ...
 </Window.Resources>

 ...
 <ListBox Name="IndexDetailsListBox"
 ...
 ContextMenu="StaticResource DetailMenu"
 ...>

 </ListBox>
... 
</Window>

I can't get it to give back anything other than unset value.
I'm grateful for any help. None of the other questions I found have the contextmenu in Window.Resources with MultiBinding which seems to be my issue.

c# .net wpf xaml

share|improve this question

asked Mar 27 at 14:11

user10891785user10891785

1333 bronze badges

add a comment | 

2

I'm trying to use multibinding on a context menu stored in Window.Resources and I can't figure out how to get the SelectedItem of the ListBox I attach the menu to.

I think I need to use PlacementTarget, but can't get anything to work. I tried using FindAncestor, but that didn't work. I also tried getting the listbox by the ElementName to no avail.

<Window ...>
 <Window.DataContext>
 <local:IPViewModel/>
 </Window.DataContext>
 <Window.Resources>
 <sys:Int32 x:Key="Number">0</sys:Int32>
 <sys:Int32 x:Key="NumberLetter">1</sys:Int32>
 <sys:Int32 x:Key="NumberLetterNumber">2</sys:Int32>

 <local:CombineParams x:Key="CombineParams"/>

 <ContextMenu x:Key="DetailMenu"> 
 <MenuItem Header = "Number">
 <i:Interaction.Triggers> 
 <i:EventTrigger EventName="Click">
 <i:InvokeCommandAction Command="Binding SwitchLabelMode">
 <i:InvokeCommandAction.CommandParameter> 
 <MultiBinding Converter="StaticResource CombineParams">
 <!-- The next line is where I'm not sure what to write to get to the listbox -->
 <Binding Source="RelativeSource AncestorType=x:Type ListBox"/> 
 <Binding Source="StaticResource Number"/>
 </MultiBinding>
 </i:InvokeCommandAction.CommandParameter>
 </i:InvokeCommandAction>
 </i:EventTrigger>
 </i:Interaction.Triggers>
 </MenuItem>
 ...
 </Window.Resources>

 ...
 <ListBox Name="IndexDetailsListBox"
 ...
 ContextMenu="StaticResource DetailMenu"
 ...>

 </ListBox>
... 
</Window>

I can't get it to give back anything other than unset value.
I'm grateful for any help. None of the other questions I found have the contextmenu in Window.Resources with MultiBinding which seems to be my issue.

c# .net wpf xaml

share|improve this question

asked Mar 27 at 14:11

user10891785user10891785

1333 bronze badges

add a comment | 

I'm trying to use multibinding on a context menu stored in Window.Resources and I can't figure out how to get the SelectedItem of the ListBox I attach the menu to.

I think I need to use PlacementTarget, but can't get anything to work. I tried using FindAncestor, but that didn't work. I also tried getting the listbox by the ElementName to no avail.

<Window ...>
 <Window.DataContext>
 <local:IPViewModel/>
 </Window.DataContext>
 <Window.Resources>
 <sys:Int32 x:Key="Number">0</sys:Int32>
 <sys:Int32 x:Key="NumberLetter">1</sys:Int32>
 <sys:Int32 x:Key="NumberLetterNumber">2</sys:Int32>

 <local:CombineParams x:Key="CombineParams"/>

 <ContextMenu x:Key="DetailMenu"> 
 <MenuItem Header = "Number">
 <i:Interaction.Triggers> 
 <i:EventTrigger EventName="Click">
 <i:InvokeCommandAction Command="Binding SwitchLabelMode">
 <i:InvokeCommandAction.CommandParameter> 
 <MultiBinding Converter="StaticResource CombineParams">
 <!-- The next line is where I'm not sure what to write to get to the listbox -->
 <Binding Source="RelativeSource AncestorType=x:Type ListBox"/> 
 <Binding Source="StaticResource Number"/>
 </MultiBinding>
 </i:InvokeCommandAction.CommandParameter>
 </i:InvokeCommandAction>
 </i:EventTrigger>
 </i:Interaction.Triggers>
 </MenuItem>
 ...
 </Window.Resources>

 ...
 <ListBox Name="IndexDetailsListBox"
 ...
 ContextMenu="StaticResource DetailMenu"
 ...>

 </ListBox>
... 
</Window>

I can't get it to give back anything other than unset value.
I'm grateful for any help. None of the other questions I found have the contextmenu in Window.Resources with MultiBinding which seems to be my issue.

c# .net wpf xaml

share|improve this question

asked Mar 27 at 14:11

user10891785user10891785

1333 bronze badges

<Window ...>
 <Window.DataContext>
 <local:IPViewModel/>
 </Window.DataContext>
 <Window.Resources>
 <sys:Int32 x:Key="Number">0</sys:Int32>
 <sys:Int32 x:Key="NumberLetter">1</sys:Int32>
 <sys:Int32 x:Key="NumberLetterNumber">2</sys:Int32>

 <local:CombineParams x:Key="CombineParams"/>

 <ContextMenu x:Key="DetailMenu"> 
 <MenuItem Header = "Number">
 <i:Interaction.Triggers> 
 <i:EventTrigger EventName="Click">
 <i:InvokeCommandAction Command="Binding SwitchLabelMode">
 <i:InvokeCommandAction.CommandParameter> 
 <MultiBinding Converter="StaticResource CombineParams">
 <!-- The next line is where I'm not sure what to write to get to the listbox -->
 <Binding Source="RelativeSource AncestorType=x:Type ListBox"/> 
 <Binding Source="StaticResource Number"/>
 </MultiBinding>
 </i:InvokeCommandAction.CommandParameter>
 </i:InvokeCommandAction>
 </i:EventTrigger>
 </i:Interaction.Triggers>
 </MenuItem>
 ...
 </Window.Resources>

 ...
 <ListBox Name="IndexDetailsListBox"
 ...
 ContextMenu="StaticResource DetailMenu"
 ...>

 </ListBox>
... 
</Window>

share|improve this question

asked Mar 27 at 14:11

user10891785user10891785

1333 bronze badges

share|improve this question

asked Mar 27 at 14:11

user10891785user10891785

1333 bronze badges

asked Mar 27 at 14:11

user10891785user10891785

1333 bronze badges

asked Mar 27 at 14:11

user10891785user10891785

1333 bronze badges

1 Answer
1

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2

Your problem is, that you assign RelativeSource- object to the Source property of the Binding object. RelativeSource- object belongs to the RelativeSource-property.

So you get your List to the multi value converter:

<MultiBinding Converter="StaticResource CombineParams">
 <Binding Path="PlacementTarget" RelativeSource="RelativeSource AncestorType=x:Type ContextMenu"/>
 <Binding Source="StaticResource Number"/>
</MultiBinding>

share|improve this answer

answered Mar 27 at 14:43

RekshinoRekshino

3,36422 gold badges1010 silver badges3636 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  That works perfectly. Thank you so much. I'd upvote you but it won't let me under 15 reputation.
  
  – user10891785
  Mar 27 at 14:51
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  You are welcome! :)
  
  – Rekshino
  Mar 27 at 14:53
  

  
  
  
  

add a comment | 

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2

Your problem is, that you assign RelativeSource- object to the Source property of the Binding object. RelativeSource- object belongs to the RelativeSource-property.

So you get your List to the multi value converter:

<MultiBinding Converter="StaticResource CombineParams">
 <Binding Path="PlacementTarget" RelativeSource="RelativeSource AncestorType=x:Type ContextMenu"/>
 <Binding Source="StaticResource Number"/>
</MultiBinding>

share|improve this answer

answered Mar 27 at 14:43

RekshinoRekshino

3,36422 gold badges1010 silver badges3636 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  That works perfectly. Thank you so much. I'd upvote you but it won't let me under 15 reputation.
  
  – user10891785
  Mar 27 at 14:51
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  You are welcome! :)
  
  – Rekshino
  Mar 27 at 14:53
  

  
  
  
  

add a comment | 

2

Your problem is, that you assign RelativeSource- object to the Source property of the Binding object. RelativeSource- object belongs to the RelativeSource-property.

So you get your List to the multi value converter:

<MultiBinding Converter="StaticResource CombineParams">
 <Binding Path="PlacementTarget" RelativeSource="RelativeSource AncestorType=x:Type ContextMenu"/>
 <Binding Source="StaticResource Number"/>
</MultiBinding>

share|improve this answer

answered Mar 27 at 14:43

RekshinoRekshino

3,36422 gold badges1010 silver badges3636 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  That works perfectly. Thank you so much. I'd upvote you but it won't let me under 15 reputation.
  
  – user10891785
  Mar 27 at 14:51
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  You are welcome! :)
  
  – Rekshino
  Mar 27 at 14:53
  

  
  
  
  

add a comment | 

Your problem is, that you assign RelativeSource- object to the Source property of the Binding object. RelativeSource- object belongs to the RelativeSource-property.

So you get your List to the multi value converter:

<MultiBinding Converter="StaticResource CombineParams">
 <Binding Path="PlacementTarget" RelativeSource="RelativeSource AncestorType=x:Type ContextMenu"/>
 <Binding Source="StaticResource Number"/>
</MultiBinding>

share|improve this answer

answered Mar 27 at 14:43

RekshinoRekshino

3,36422 gold badges1010 silver badges3636 bronze badges

<MultiBinding Converter="StaticResource CombineParams">
 <Binding Path="PlacementTarget" RelativeSource="RelativeSource AncestorType=x:Type ContextMenu"/>
 <Binding Source="StaticResource Number"/>
</MultiBinding>

share|improve this answer

answered Mar 27 at 14:43

RekshinoRekshino

3,36422 gold badges1010 silver badges3636 bronze badges

answered Mar 27 at 14:43

RekshinoRekshino

3,36422 gold badges1010 silver badges3636 bronze badges

answered Mar 27 at 14:43

RekshinoRekshino

3,36422 gold badges1010 silver badges3636 bronze badges