How to indentify tabPages in right click event of a tabControl in WPF?

Question

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Hi I have a WPF application.
I have a tab control. inside this tab control I have several tab pages. When the user right clicks on a tab page, a context menu appears. one of the items of this menu is "remove". by clicking on this item the right clicked tab page should be removed.
Now, the problem is that how to identify which tab page was clicked. inside the event handler there is no proof of showing which tab page was removed.
please consider that I'm new in WPF.

thanks

C#

private void MenuItem_Remove_Click(object sender, RoutedEventArgs e)
{
//sender does not give us enough information to know which tab page was clicked on
}

The Image[^]

if my WPF source is needed:

XML

<Window x:Class="InfoManager.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
        <Grid>
      <TabControl Name="tabControlMain" Margin="1,1,48,1">
            <TabControl.ItemTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding Title}" MouseRightButtonDown="TextBlock_MouseRightButtonDown">
                        <TextBlock.ContextMenu>
                            <ContextMenu>
                                <MenuItem Header="Remove" Click="MenuItem_Remove_Click">
                                    <MenuItem.Icon>
                                        <Image Width="20" Height="20"  Source="..\Resources\remove.png" Stretch="Fill" />
                                    </MenuItem.Icon>
                                </MenuItem>
                            </ContextMenu>
                        </TextBlock.ContextMenu>
                    </TextBlock>
                </DataTemplate>
            </TabControl.ItemTemplate>
            <TabItem Header="tabItem1" Name="tabItem1">
            </TabItem>
        </TabControl>
        <Button Width="30" Height="30" HorizontalAlignment="Right"  Name="buttonAddTab" VerticalAlignment="Top" Margin="0,5,5,0" Click="buttonAddTab_Click">
        <Image Source="..\resources\add.png" Stretch="UniformToFill"></Image>
        </Button>
    </Grid>
</Window>

Posted 23-Jun-11 23:13pm

aasser

Updated 23-Jun-11 23:17pm

v2

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4 solutions

Solution 2

this is for winform as im not sure about wpf but hpefully this will point you in the right diretion

C#

protected TabPage ActiveTab
        {
            get
            {
                if (this.tabControl1.SelectedTab != null)
                {
                    return this.tabControl1.SelectedTab;
                }
                return null;
            }
        }

to use just use this

C#

TabPage MySelectedTab = ActiveTab;
if (MySelectedTab != null)
{
// do what you need with the active TabPage here
}

Posted 24-Jun-11 9:38am

charles henington

Updated 24-Jun-11 9:44am

v2

Comments

[no name] 24-Jun-11 23:26pm

Thanks
but the problem is that the right clicked tab is not the active tab necessarily.

Solution 3

My workaround for this is the following:

C#

public TabItem Clicked;

public void AddTab(string Name)
{
TabControl1.Items.Add(new TabItem{Header = c.Name, Name = c.Name});
((TabItem)TabControl1.Items[TabControl1.Items.Count - 1]).MouseDown += new MouseButtonEventHandler((sender, e) =&gt; { if (e.RightButton == MouseButtonState.Pressed) Clicked = (TabItem)TabControl1.Items[TabControl1.Items.Count - 1]; });
}

//Window Mouse Down Event Handler
private void Window_MouseDown(object sender, MouseButtonEventArgs e)
{
    if (e.RightButton == MouseButtonState.Pressed)
        Clicked = null;
}

Then you can use the Clicked variable anywhere to find out the Right Clicked TabItem.

Good Luck!

Posted 31-Oct-12 13:53pm

CSharpDaniel

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Mark Salsbery · Accepted Answer · 2011-06-24T06:33:00

*Edit*

After thinking about this again, my original reply was wrong because the user doesn't necessarily right-click on the selected tab. I see your dilemma, but there's a solution (well, at least one)...

In the MenuItem Click handler, the sender is a MenuItem. Its DataContext will be a reference to the object providing the data item for the tab item. You just need to remove that object from the collection that is providing data to the tab control. For example, here's how I tested it...

<UserControl x:Class="WPFTester.TabControlTestPage"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300">
    <Grid>
        <TabControl x:Name="tabControlMain" Loaded="tabControlMain_Loaded" >
            <TabControl.ItemTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding Title}">
                        <TextBlock.ContextMenu>
                            <ContextMenu>
                                <MenuItem Header="Remove" Click="MenuItem_Remove_Click">
                                    <!--<MenuItem.Icon>
                                        <Image Width="20" Height="20"  Source="..\Resources\remove.png" Stretch="Fill" />
                                    </MenuItem.Icon>-->
                                </MenuItem>
                            </ContextMenu>
                        </TextBlock.ContextMenu>
                    </TextBlock>
                </DataTemplate>
            </TabControl.ItemTemplate>
            <TabControl.ContentTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding Content}" />
                </DataTemplate>
            </TabControl.ContentTemplate>
        </TabControl>
    </Grid>
</UserControl>

public partial class TabControlTestPage : UserControl
{
    public TabControlTestPage()
    {
        InitializeComponent();
    }


    private TabDataTestList tabDataTestList = new TabDataTestList();

    private void tabControlMain_Loaded(object sender, RoutedEventArgs e)
    {
        tabControlMain.ItemsSource = tabDataTestList;
    }

    private void MenuItem_Remove_Click(object sender, RoutedEventArgs e)
    {
        tabDataTestList.Remove(((sender as MenuItem).DataContext) as TabData);
    }

}


public class TabData
{
    public string Title { get; set; }
    public string Content { get; set; }
}

public class TabDataTestList : ObservableCollection<TabData>
{
    public TabDataTestList()
    {
        this.Add(new TabData() { Title = "Item 1", Content = "Content for item 1" });
        this.Add(new TabData() { Title = "Item 2", Content = "Content for item 2" });
        this.Add(new TabData() { Title = "Item 3", Content = "Content for item 3" });
        this.Add(new TabData() { Title = "Item 4", Content = "Content for item 4" });
        this.Add(new TabData() { Title = "Item 5", Content = "Content for item 5" });
    }
}

Wonde Tadesse · Accepted Answer · 2012-10-31T16:20:00

An alternative solution is shown below.

HTML

<window x:class="WPF_SampleApp.MainWindow" xmlns:x="#unknown">
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="WPF Sample" Height="250" Width="435">
    <grid>
        <tabcontrol height="169" horizontalalignment="Left" margin="10,10,0,0" name="tabControl1" verticalalignment="Top" width="389">
            <tabitem header="tabItem1" name="tabItem1" isselected="False" mouserightbuttondown="TabItem_MouseRightButtonDown">
                <grid />
            </tabitem>
            <tabitem header="tabItem2" mouserightbuttondown="TabItem_MouseRightButtonDown" />
        </tabcontrol>
    </grid>
</window>

C#

namespace WPF_SampleApp
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private TabItem selectedTabItem = new TabItem();

        private void TabItem_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
        {
            ContextMenu mainMenu = new ContextMenu();

            MenuItem removeTab = new MenuItem();
            removeTab.Header = "Remove";
            removeTab.Foreground = Brushes.Black;
            removeTab.Background = Brushes.Transparent;
            removeTab.Click += new RoutedEventHandler(removeTab_Click);
            mainMenu.Items.Add(removeTab);

            MenuItem changeTabBGColor = new MenuItem();
            changeTabBGColor.Header = "Change background color";
            changeTabBGColor.Foreground = Brushes.Black;
            changeTabBGColor.Background = Brushes.Transparent;
            changeTabBGColor.Click += new RoutedEventHandler(changeTabBGColor_Click);
            mainMenu.Items.Add(changeTabBGColor);

            TabItem tabItem = (TabItem)sender;
            selectedTabItem = tabItem; // Set seleted tab
            tabItem.ContextMenu = mainMenu;
        }

        void changeTabBGColor_Click(object sender, RoutedEventArgs e)
        {
            if (selectedTabItem != null) selectedTabItem.Background = Brushes.Blue;
        }

        void removeTab_Click(object sender, RoutedEventArgs e)
        {
            if (selectedTabItem != null) tabControl1.Items.Remove(selectedTabItem);
        }
    }
}

How to indentify tabPages in right click event of a tabControl in WPF?

4 solutions

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