CODEWITHSUNDEEP
wpfxamlvisual-studio-2012mvvm
Tarun
Tarun

Reputation: 221

How to hide the menu item of context menu in wpf xaml based on condition

In my xaml, I have used wpf ContextMenu to display the menu items in wpf datagid. I need to hide the menu items based on the condition. I tried the following but its not working.

<ContextMenu x:Key="contextMenuTextCell">


            <MenuItem Name="copyDealContextMenu"
                    Header="Copy Deal"
                    Command="{Binding RelativeSource={RelativeSource AncestorType=DataGrid}, Path=DataContext.CopyDeal}"
                    CommandParameter="{Binding}">

                <Style TargetType="{x:Type MenuItem}">
                    <Setter Property="Visibility" Value="Collapsed"></Setter>
                    <Style.Triggers>
                        <DataTrigger Binding="{ Binding ElementName= BlotGrid,Path=DataContext.ProductType }" Value="FXO">
                            <Setter Property="Visibility" Value="Visible"></Setter>
                        </DataTrigger>
                    </Style.Triggers>
                </Style>

            </MenuItem>

        </ContextMenu>

How to hide the menu items in context menu?

Thanks

Upvotes: 3

Views: 10514

Answers (1)

eran otzap
eran otzap

Reputation: 12533

There are 2 reason this did not work.

1) is that ContextMenu does not reside in the same VisualTree as the element it is set for ( i.e. it's PlacementTarget). There for you would not be able to bind to an element with ElementName.

2) you put your Style like it's a Content of the MenuItem. ( I didn't notice it at first as well..). it needs to be set to the DependencyProperty 'Style' of your MenuItem.

<Grid x:Name="BlotGrid" Background="Red">
     <Grid.ContextMenu>
        <ContextMenu>            
            <MenuItem Name="copyDealContextMenu"
                Header="Copy Deal"        
                CommandParameter="{Binding}">
                 <MenuItem.Style>
                    <Style TargetType="{x:Type MenuItem}">
                        <Setter Property="Visibility" Value="Collapsed"></Setter>
                        <Style.Triggers>
                            <DataTrigger Binding="{Binding RelativeSource={RelativeSource AncestorType=ContextMenu},Path=PlacementTarget.DataContext.IsXXX}" Value="True">
                                <Setter Property="Visibility" Value="Visible"></Setter>
                            </DataTrigger>
                        </Style.Triggers>
                    </Style>
                </MenuItem.Style>
            </MenuItem>
        </ContextMenu>
    </Grid.ContextMenu>      
</Grid>

Upvotes: 6

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