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Issue with SelectedItemChanged event

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George C.
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George C. asked on 23 Mar 2020, 12:50 PM

Greetings,

I accidentally noticed an issue while working with RadlistView.

"SelectedItemChanged" event is supposed to be fired when Item Changing of RadlistView is done ("SelectedItemChanged" must be fired after "SelectedItemChanging"), But it is as if "SelectedItemChanged"  acts just like the "SelectedItemChanging" event.

I attached a picture that illustrates a simple test. I'm wondering why it raises error. There were 5 items in the list and even if there is no item that is already selected ( I do not mean Current Item), it should select an item as user clicks on an item, then after finishing selecting ("SelectedItemChanging") the item, it should fire  "SelectedItemChanged" event.

 

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Dess | Tech Support Engineer, Principal
Telerik team
answered on 23 Mar 2020, 02:34 PM
Hello, George,

Note that the SelectedItemChanged event is expected to be fired when the SelectedItem gets changed. It also can be null when there is no SelectedItem in RadListView at a certain moment. That is why before accessing the SelectedItem in the event handler it is necessary to check for null value before that:
        private void RadListView1_SelectedItemChanged(object sender, EventArgs e)
        {
            if (this.radListView1.SelectedItem!=null)
            {
                Console.WriteLine(this.radListView1.SelectedItem.Text);
            }
        }
I hope this information helps. If you need any further assistance please don't hesitate to contact

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik

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George C.
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Dess | Tech Support Engineer, Principal
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