Closing a MetroTabItem added from a child.

[andySF]

I have a MetroAnimatedSingleRowTabControl in my Window and from a UserControl I add programmaticaly a MetroTabItem to it like so:

object foundTabControl = parentWindow.FindName("metroAnimatedSingleRowTabControl");
MetroAnimatedSingleRowTabControl metroAnimatedSingleRowTabControl = (MetroAnimatedSingleRowTabControl)foundTabControl;
MetroTabItem metroTabItem = new MetroTabItem();
metroTabItem.Content = newSomeUserControl;
metroTabItem.CloseButtonEnabled = true;
metroAnimatedSingleRowTabControl.Items.Insert(index,metroTabItem);
metroAnimatedSingleRowTabControl.SelectedIndex = index;
metroAnimatedSingleRowTabControl.Items.MoveCurrentToLast();

When I close this tab I get a InvalidOperationException saying that Operation is not valid due to the current state of the object.

The other tabs added from XAML don't have a close button but if I set the CloseButtonEnabled="True" it's working. The problem is just with the TabItems added from the child.

Is this a limitation or I just lack the knowledge to do this?

[andySF]

Help?

[AzureKitsune]

The MetroTabItem infrastructure is a mess right now. It needs to be rewritten to do anything nice, unfortunately. See #1293

[punker76]

@Amrykid i don't think the infrastructure is medded up.
@andySF possible you forget the other constructor public MetroTabItem(BaseMetroTabControl OwningTabControl)

[punker76]

@andySF with the correct ctr and all works fine (tested in mahapps metro)

[oloopy]

@punker76 this works fine unless the style of MetroTabItem get changed or redefined even the code is the same as original. Suppose I have defined the MyMetroTabItem in App.xml without changing any original style.

<Style TargetType="c:MetroTabItem" x:Key="MyMetroTabItem" BasedOn="{StaticResource MetroTabItem}"/>

Then try to get the style

<c:MetroTabItem CloseButtonEnabled="True" Style="{StaticResource MyMetroTabItem}"/>

or from code-behind,

var tabItem = new MetroTabItem(ShellWindow.MetroTabControl)
{
    CloseButtonEnabled = true,
    Style = System.Windows.Application.Current.FindResource("MyMetroTabItem") as Style,
};

When setting like above will get the style, but the CloseButton won't show up.

Also the size of CloseButton won't change as HeaderFontSize changed.

Thanks for any advice.

[punker76]

@andySF @oloopy
To override default style for the MetroTabItem control it's necessary to inherit from {StaticResource {x:Type controls:MetroTabItem}}

<Style TargetType="controls:MetroTabItem"
        x:Key="MyMetroTabItem"
        BasedOn="{StaticResource {x:Type controls:MetroTabItem}}" />