Question

With a breakpoint on the “if” line of this code:

if ((ckbx.Content != null) && (!ckbx.Content.ToString().Contains("(Empty list)")))
{
    string groupName = ckbx.Content.ToString();
    var contextMenu = new PopupMenu();

    contextMenu.Commands.Add(new UICommand("Edit this Group", contextMenuCmd => Frame.Navigate

    (typeof(LocationGroupCreator), groupName)));

    contextMenu.Commands.Add(new UICommand("Delete this Group", async (contextMenuCmd) =>
    {
        await SQLiteUtils.DeleteGroupAsync(groupName); 
    }));

    await contextMenu.ShowAsync(args.GetPosition(this));
}

…ckbx.Content is “(Empty list)”, but the condition is seen as false – the condition fails. Why?

Answer 1

…ckbx.Content is “(Empty list)”, but the condition is seen as false – the condition fails. Why?

Your condition has the logical negation operator (!) negating the results of Contains:

 (!ckbx.Content.ToString().Contains("(Empty list)"))

As such, if the content contains “(Empty list)”, Contains will return true, and the ! will make it false, which makes the condition fail.