CODEWITHSUNDEEP
c#wpfevent-handling
Laokoon
Laokoon

Reputation: 1301

ListBoxItem MouseUp Event doesnt fire

I created a ListBox with ListBoxItems and add an MouseDown event handler to each of the ListBoxItems. The ListBoxItems are shown, but when I click on a ListBoxItem, the Event doesn't get fired.

How i set the MouseUp:

TrackedProcessList.ItemsSource = null;
TrackedProcessList.ItemsSource = this.tracks;

/*... some other code that doesn't matter ... */

ListBoxItem[] items = new ListBoxItem[TrackedProcessList.Items.Count];
for (int i = 0; i < TrackedProcessList.Items.Count; i++)
{
    Object obj = TrackedProcessList.Items.GetItemAt(i);
    //TrackedProcessList.UpdateLayout();
    ListBoxItem item = (ListBoxItem)(TrackedProcessList.ItemContainerGenerator.ContainerFromIndex(i));
    if (item != null) 
    {
        item.MouseUp += new MouseButtonEventHandler(ListBoxItem_MouseUp_PostQuestion);
        items[i] = item;
    }
}

The Method which should be called (but it isn't):

private void ListBoxItem_MouseUp_PostQuestion(object sender, EventArgs e)
{
    MessageBox.Show("ListBoxItem_MouseUp_fired");
}

My XAML:

<ListBox x:Name="TrackedProcessList" Height="145" Width="605" ItemsSource="{Binding}" BorderThickness="1,0" IsSynchronizedWithCurrentItem="True">
    <DataTemplate>
        <TextBlock  MouseDown="ListBoxItem_MouseUp_PostQuestion" Text="{Binding Path=programName}" HorizontalAlignment="Stretch" ></TextBlock>
    </DataTemplate>
</ListBox>

Do you have any ideas where the failure could be? There is no error. The Event just seems to be not bound to the ListBoxItem.

Upvotes: 0

Views: 1338

Answers (3)

Xtremexploit
Xtremexploit

Reputation: 329

Use the ContainedControl property and set your events :)

kryptonListBox1.ContainedControl.MouseDown += kryptonListBox1_MouseDown_1;

Upvotes: 0

JJones
JJones

Reputation: 1

void OnListBox_Mouse_Down(object sender, MouseButtonEventArgs e)
{
   e.Handled
}

void OnListBox_Mouse_Up(object sender, MouseButtonEventArgs e)
{
   "Do Something";
}

Upvotes: 0

dkozl
dkozl

Reputation: 33384

It is because ListBoxItem already handles both left and right click which means your event handler will not be triggered according to WPF routed event rules. Your either have to assign PreviewMouseDown event or add event handler for handled events:

lbi.AddHandler(ListBoxItem.MouseDownEvent, new MouseButtonEventHandler(MouseEvent), true);

Upvotes: 2

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