0
Xaml
<ItemsControl ItemsSource="{Binding Foldres}"
FontSize="14"
Foreground="{StaticResource SecondaryTextColorSolidColorBrush}"
ScrollViewer.HorizontalScrollBarVisibility="Disabled"
ScrollViewer.VerticalScrollBarVisibility="Auto"
Margin="0 20 0 0"
Padding="0 0 5 0"
HorizontalAlignment="Stretch"
Grid.Row="1">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Border>
<TextBlock Text="{Binding Name}"
TextWrapping="Wrap"
VerticalAlignment="Center"
MaxHeight="25"
FontSize="14"
LineHeight="25"
TextAlignment="Left"
Cursor="Hand">
<TextBlock.ContextMenu>
<ContextMenu>
<MenuItem Header="Remove"
Command="{Binding RelativeSource={RelativeSource AncestorType={x:Type Page}, Mode=FindAncestor}, Path=DataContext.RemoveFolderCommand}"/>
</ContextMenu>
</TextBlock.ContextMenu>
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseDown">
<!--<Behaviors:InvokeCommandAction Command="{Binding RelativeSource={RelativeSource AncestorType={x:Type Page}}, Path=DataContext.SelectedFolderRightClickCommand}"
PassEventArgsToCommand="True" />-->
<Behaviors:CallMethodAction MethodName="SelectedFolderChange"
TargetObject="{Binding RelativeSource={RelativeSource AncestorType={x:Type Page}}, Path=DataContext}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</TextBlock>
</Border>
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.Template>
<!-- Add Scrollview -->
<ControlTemplate TargetType="{x:Type ItemsControl}">
<Border x:Name="Border"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}">
<ScrollViewer Margin="0"
Focusable="False"
Padding="{TemplateBinding Padding}"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}"
VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}"
CanContentScroll="{TemplateBinding ScrollViewer.CanContentScroll}">
<ItemsPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
</ScrollViewer>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled"
Value="False">
<Setter TargetName="Border"
Property="Background"
Value="Gray" />
<Setter TargetName="Border"
Property="BorderBrush"
Value="Silver" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</ItemsControl.Template>
</ItemsControl>
Viewmodel
public class ViewModel
{
public ICommand RemoveFolderCommand { get; set; }
public ViewModel()
{
RemoveFolderCommand = new RelayCommand(AçãoASerFeita);
}
private void AçãoASerFeita()
{
;
}
}
Relaycommand
public class RelayCommand : ICommand
{
#region Private Members
/// <summary>
/// The action to run
/// </summary>
private Action mAction;
#endregion
#region Public Events
/// <summary>
/// The event thats fired when the <see cref="CanExecute(object)"/> value has changed
/// </summary>
public event EventHandler CanExecuteChanged = (sender, e) => { };
#endregion
#region Constructor
/// <summary>
/// Default constructor
/// </summary>
public RelayCommand(Action action)
{
mAction = action;
}
#endregion
#region Command Methods
/// <summary>
/// A relay command can always execute
/// </summary>
/// <param name="parameter"></param>
/// <returns></returns>
public bool CanExecute(object parameter)
{
return true;
}
/// <summary>
/// Executes the commands Action
/// </summary>
/// <param name="parameter"></param>
public void Execute(object parameter)
{
mAction();
}
#endregion
}
Error message:
The problem is that the command of Contextmenu is finding the ICommand DataContext.RemoveFolderCommand for 2 reasons.
1- I use the same Binding just below it : <Behaviors:CallMethodAction MethodName="SelectedFolderChange" TargetObject="{Binding RelativeSource={RelativeSource AncestorType={x:Type Page}}, Path=DataContext}" />, Out there are 4 more commits in my shampoo and they all work.
2- That command performs correctly if the following happens: If with the application running, I edit the "Hot relaod" shampoo, for example by removing the Mode=FindAncestor the command Contextmenu works normally again, so if I re-load the application it stops working again. Soon if I run the application again and again edit the command adding again the Mode=FindAncestor the command back to work, and if I give Reload again in the application it stops working until I edit again.
In short, I have one command that only works when I edit it in the shampoo while the application is running.
Does anyone know how I can fix this?
I have tried: To use the visualstudio, To use the blend, Restart the two programs, Restart the Machine, Rewrite that part of the code.