how to bind list of Commands (List<ICommand>)

Question

have a look at the following

public class CommandDefinition
    {
        public string MenuName { get; set; }

        public ICommand MenuCommand { get; set; }
       
    }

public class AdminCommandService
    {
        public static IEnumerable<CommandDefinition> GetCommands()
        {
            AdminCommandService objService = new AdminCommandService();
            List<CommandDefinition> CommandCollection=new List<CommandDefinition>();
            CommandDefinition objInvokeCmd = new CommandDefinition
            {
                MenuName="Add User",
                MenuCommand = new DelegateCommand<object>(objService.InvokeAddUser)
            };
            CommandDefinition objDelUserCmd = new CommandDefinition
            {
                MenuName="Delete User",
                MenuCommand = new DelegateCommand<object>(objService.DeleteUser)
            };

            CommandDefinition objUserDetailCmd = new CommandDefinition
            {
                MenuName=" User Detail",
                MenuCommand = new DelegateCommand<object>(objService.UserDetails)
            };

            CommandCollection.Add(objInvokeCmd);
            CommandCollection.Add(objDelUserCmd);
            CommandCollection.Add(objUserDetailCmd);

            return CommandCollection;
        }

        public void InvokeAddUser(object parm)
        {

        }
        public void DeleteUser(object parm)
        {

        }
        public void UserDetails(object Parm)
        {

        }

    }

---------------------------------------------------------------------------

public class MenuViewViewModel
    {
        public IEnumerable<CommandDefinition> Commands { get; set; }

      

        public MenuViewViewModel()
        {
           CommandService objService=SingletonUnityService.Instance.GetByType<CommandService>();
         
           this.Commands = objService.GetCommandsByRole(Roles.Admin);
        }

        public void OnListClicked(object parm)
        {
            CommandDefinition cmd = parm as CommandDefinition;

        }
       
      
    }

-----------------------------------------------------------

<ListBox x:Name="UserMenu" ItemsSource="{Binding Commands}" >
                        <ListBox.ItemTemplate>
                            <DataTemplate>
                                <TextBlock Text="{Binding MenuName}"/>
                            </DataTemplate>
                        </ListBox.ItemTemplate>                       
                        <i:Interaction.Triggers>
                            <i:EventTrigger EventName="SelectionChanged">
                                <i:InvokeCommandAction
                                    Command="{Binding Path=MenuCommand}"
                                    CommandParameter="{Binding SelectedItem,ElementName=UserMenu}"/>
                            </i:EventTrigger>
                        </i:Interaction.Triggers>

                       
                    </ListBox>

Menus are getting populated but the event is not triggering...i mean its not calling its event...

it is not calling its action methods...

any ide....

Answer 1

Have you checked the output window for problems?

Also, is this one of the issues with DataTemplate not being a DependencyProperty and you'll need to use something like the ViewModelLocator in MVVVMLight to address this?

 

<CheckBox x:Name="ChkAAMapIt"
                                              Margin="2"
                                              HorizontalAlignment="Center"
                                              VerticalAlignment="Center"
                                              Click="ChkAAMapIt_Click" 
                                              IsChecked="{Binding MapIt, Mode=TwoWay}" >
                                        <i:Interaction.Triggers>
                                            <i:EventTrigger EventName="Click">
                                                <i:InvokeCommandAction Command="{Binding Source={StaticResource Locator}, 
                                                Path=TruckDetailsViewModel.AlertAlarmClickCommand}" CommandParameter="{Binding}"/>
                                            </i:EventTrigger>
                                        </i:Interaction.Triggers>
                                    </CheckBox>