wpf - Context Menu does not register click event to fire command xaml and c# - Stack Overflow

admin管理员组

文章数量:1345584

I have some code to display a list of object type waiters and inside that object is a list of customers objects assigned to that waiter. Each customer can be checked in the list. I have a context menu that will allow me to assign all checked customers to the selected waiter. However when I click on the waiter to transfer the customers, the command does not get hit. I have researched and tried a lot of different things and nothing has worked so far. The closest I have gotten I'll post below. The breakpoint does hit the public ICommand ClickCommand in the code behind when the context menu is opened for each of the waiters but clicking on the waiter to transfer the customers does not hit public void ItemSelected. I did stick in a button at the in the stack panel to test the command from there and it worked fine. I'm guessing I have something wrong with my bindings or I have read about parts of context menus being hidden and messed around with that but I'm not sure what I'm missing, probably got close to the right one at some point but I have not been able to get it to work. Code:

<ResourceDictionary xmlns=";
                xmlns:x=";
        >
    <DataTemplate DataType="{x:Type MVVM}">
        <StackPanel>
            <StackPanel.ContextMenu>
                <ContextMenu>
                    <MenuItem Header="Menu Title">
                        <MenuItem>
                            <MenuItem.Template>
                                <ControlTemplate>
                                    <ListBox ItemsSource="{Binding Waiters}">
                                        <ListBox.ItemTemplate>
                                            <DataTemplate>
                                                <StackPanel Orientation="Horizontal">
                                                    <TextBlock Text="{Binding WaiterName}"/>
                                                    <TextBlock Text="{Binding Customers.Count}"/>
                                                    <Button Command="{Binding DataContext.ClickCommand, RelativeSource={RelativeSource AncestorType=ContextMenu}}" CommandParameter="{Binding WaiterName}"/>
                                                </StackPanel>
                                            </DataTemplate>
                                        </ListBox.ItemTemplate>
                                    </ListBox>
                                </ControlTemplate>
                            </MenuItem.Template>
                        </MenuItem>
                    </MenuItem>
                </ContextMenu>
            </StackPanel.ContextMenu>

            <!--display waiters and customers code-->
            
        </StackPanel>
    </DataTemplate>
</ResourceDictionary>

Code Behind:

public ICommand ClickCommand => new DelegateCommand<string>(first, ItemSelected);

public void ItemSelected(string Waiter)
{
    //do stuff
}

private List<Waiter> _waiters = new List<Waiter>();

public ObservableCollection<Waiter> Waiters
{
    get
    {
        var waiters= new ObservableCollection<Waiter>();
        foreach (var item in _waiters)
        {
            waiters.Add(item);
        }
        return waiters;
    }
}

I have tried a lot of different bindings and creating a dummy to store the data context as shown here: / but none of it has worked so far.

本文标签： wpfContext Menu does not register click event to fire command xaml and cStack Overflow