C Listbox Item Double Click Event

Question

I have a list box with some items  Is there anyway I can attach a double click event to each item   Item 1 Item 2 Item 3   If i was to double click Item 2  a Messagebox saying  Item 2  would pop up  How would i do this

User · Answer

I know this question is quite old  but I was looking for a solution to this problem too  The accepted solution is for WinForms not WPF which I think many who come here are looking for    For anyone looking for a WPF solution  here is a great approach  via Oskar s answer here    private void myListBox MouseDoubleClick object sender  MouseButtonEventArgs e        DependencyObject obj    DependencyObject e OriginalSource       while  obj    null  amp  amp  obj    myListBox                if  obj GetType      typeof ListBoxItem                             Do something              break                      obj   VisualTreeHelper GetParent obj             Basically  you walk up the VisualTree until you ve either found a parent item that is a ListBoxItem  or you ascend up to the actual ListBox  and therefore did not click a ListBoxItem

User · Answer

WinForms  Add an event handler for the Control DoubleClick event for your ListBox  and in that event handler open up a MessageBox displaying the selected item   E g     private void ListBox1 DoubleClick object sender  EventArgs e          if  ListBox1 SelectedItem    null                  MessageBox Show ListBox1 SelectedItem ToString                 Where ListBox1 is the name of your ListBox   Note that you would assign the event handler like this   ListBox1 DoubleClick    new EventHandler ListBox1 DoubleClick       WPF Pretty much the same as above  but you d use the MouseDoubleClick event instead   ListBox1 MouseDoubleClick    new RoutedEventHandler ListBox1 MouseDoubleClick     And the event handler    private void ListBox1 MouseDoubleClick object sender  RoutedEventArgs e          if  ListBox1 SelectedItem    null                  MessageBox Show ListBox1 SelectedItem ToString                   Edit  Sisya s answer checks to see if the double-click occurred over an item  which would need to be incorporated into this code to fix the issue mentioned in the comments  MessageBox shown if ListBox is double-clicked while an item is selected  but not clicked over an item    Hope this helps

User · Answer

It depends whether you ListBox object of the System Windows Forms ListBox class  which does have the ListBox IndexFromPoint   method  But if the ListBox object is from the System Windows Control Listbox class  the answer from  dark-knight  marked as correct answer  does not work   Im running Win 10  1903  and current versions of the  NET framework  4 8   This issue should not be version dependant though  only whether your Application is using WPF or Windows Form for the UI  See also  WPF vs Windows Form

User · Answer

void listBox1 MouseDoubleClick object sender  MouseEventArgs e        int index   this listBox1 IndexFromPoint e Location       if  index    System Windows Forms ListBox NoMatches                MessageBox Show index ToString              This should work   check

User · Answer

This is very old post but if anyone ran into similar problem and need quick answer    To capture if a ListBox item is clicked use MouseDown event   To capture if an item is clicked rather than empty space in list box check if listBox1 IndexFromPoint new Point e X e Y   gt  0 To capture doubleclick event check if e Clicks    2

User · Answer

For Winforms   private void listBox1 DoubleClick object sender  MouseEventArgs e                int index   this listBox1 IndexFromPoint e Location           if  index    System Windows Forms ListBox NoMatches                        MessageBox Show listBox1 SelectedItem ToString                       and   public Form         InitializeComponent        listBox1 MouseDoubleClick    new MouseEventHandler listBox1 DoubleClick       that should also  prevent for the event firing if you select an item then click on a blank area

[c#] C# Listbox Item Double Click Event

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