How to sent list using CommandParameter

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By : Sebastien

Date : November 25 2020, 04:01 AM

To fix the issue you can do I have a ListView and since it supports multiple selection I have a button where I gather all the SelectedItems and pass them using CommandParameter. Being very new to this I really don't know how to do so with parameters. How do I access the list when it has been passed to my ViewModel? Please see below code: , ListView.SelectedItems is an IList:

code :

private ICommand _selectBtnOnClickCommand;
public ICommand SelectBtnOnClickCommand
{
    get
    {
        if (_selectBtnOnClickCommand == null)
            _selectBtnOnClickCommand = new RelayCommand(o =>
            {
                var selectedSites = (o as IList);
                if (selectedSites != null)
                {
                    foreach (var model in selectedSites.OfType<SiteUrlsModel>())
                    {
                        //
                    }
                }
            });
        return _selectBtnOnClickCommand;
    }
}

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Use DataContext as CommandParameter in WPF

By : user1787768

Date : March 29 2020, 07:55 AM

To fix the issue you can do An empty Binding, without a path, binds directly to the DataContext, so

code :

{Binding}

<Button 
  x:Name="btnMain"
  Command="infra:ApplicationCommands.MyCommand"
  CommandParameter="{Binding}"
 />

How do I set CommandParameter in XAML?

By : user2814557

Date : March 29 2020, 07:55 AM

wish helps you I have the following XAML: , Try using this:

code :

<MenuItem x:Name="gridprint"
    CommandParameter="{Binding PlacementTarget, RelativeSource=
         {RelativeSource FindAncestor, AncestorType={x:Type ContextMenu}}}" />

Cannot set CommandParameter using ElementName

By : Orie Wall

Date : March 29 2020, 07:55 AM

it helps some times The problem is that, like the Popup control, it's a different visual tree. The error is telling you that it is trying to find a property called 'CommandParameter' on a 'RadMenuItem', because this is the DataContext it has within the ContextMenu's visual tree.
This will help you: Placement Target

how to pass generic list in CommandParameter

By : Simon Sørensen

Date : March 29 2020, 07:55 AM

wish help you to fix your issue If you want to bind collection from (XAML) control for an example from combobox:

code :

<ComboBox x:name="combobox" ItemsSource="{Binding Collection}">
<HyperlinkButton Command="{Binding DataContext.HyperlinkGoToCommand}", CommandParameter="{Binding  ElementName=combobox, Path=ItemsSource}"></HyperlinkButton>

CommandParameter="{Binding DataContext.YourCollectionPropertyFromViewModel}" or
CommandParameter="{Binding YourCollectionFromViewModel}"

Use MenuItem Value as CommandParameter

By : Papaj_G

Date : March 29 2020, 07:55 AM

it helps some times I have the following MenuItem which comes from a Menu (not a ContextMenu): , If you want to send the clicked menuitem context then

code :

<MenuItem DisplayMemberPath="Name"
          Header="Teams"
          ItemsSource="{Binding Teams,
                                Source={StaticResource Container}}">
    <i:Interaction.Triggers>
        <i:EventTrigger EventName="Click">
            <cmd:EventToCommand Command="{Binding OpenTeamPage}"
                                PassEventArgsToCommand="True"
        </i:EventTrigger>
    </i:Interaction.Triggers>
</MenuItem>