C#: Ignore PreviewKeyDown on editing of ListViewItem [closed]-CodePudding

C#, WinForms: I can't find any help using google (c# PreviewKeyDown bypass/ignore/edit listvviewitem...), so I would like to ask you for help. Is there any way, how to process PreviewKeyDown in ListView, but ignore it during ListViewItem editing?

I have a ListView in my Form. If user presses "Delete" key, I want to delete an item, so I have an Event handler PreviewKeyDown on the ListView where I evaluate pressed key. Thinks go good.

But now I want to allow user to edit text in the ListViewItem. If users presses F2, I fire BeginEdit();
ListView1.SelectedItems[0].BeginEdit();

Still OK. The Item switches to edit mode and user can rewrite the text. But if user presses "Delete" key, he/she expect the text will be deleted. But because the key is handled by the PreviewKeyDown event handler, the text is not affected.

I tried to create a variable isListViewItemEdited which I set to true in BeforeLabelEdit, but it didn't help. The variable is set to true, the line with e.KeyCode == Keys.Delete is skipped, but the selected text in ListViewItem is not affected.

    private void ListView1_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
    {
        if (!isListViewEdited)
        {
            if (e.KeyCode == Keys.Delete)
            {
                ...
            }
        }...

Is there any way, how to process PreviewKeyDown in ListView, but ignore it during ListViewItem editing?

CodePudding user response：

Don't use preview key down but use key down. When editing the handle the event.

CodePudding user response：

I think this code would help you:

Enabling ListView Edit Items:

 listView1.LabelEdit = true;

Delete for ListView

 ListViewItem get= new ListViewItem();
           foreach(var item in listView1.SelectedItems)
            {
                get =(ListViewItem)item;
            }
            if (e.KeyCode == Keys.Delete)
            {
                listView1.Items.Remove(get);
            }

Delete for ListBox:

int getindex = listBox1.SelectedIndex;
                if (e.KeyCode == Keys.Delete)
                {
                    listBox1.Items.RemoveAt(getindex);
                }