How to clear the selection from a ListView

Question

Hi

I'm getting an exception when trying to clear the selection from a ListView.

For example:

Start a new Windows Store app in C#, choose blank.xaml

Add a ListView and a Button to MainPage.xaml. Name the ListView "Test".

Add some items to the ListView eg:

<ListViewItem Content="One"/>
<ListViewItem Content="Two"/>
<ListViewItem Content="Three"/>

Add some code to the click handler for the button eg:

Test.SelectedItems.Clear();

At runtime, I get a "Catastrophic failure" exception when clicking the button, whether or not anything is selected in the ListView.

I have found a workaround:

Test.SelectionMode = ListViewSelectionMode.None;
Test.SelectionMode = ListViewSelectionMode.Single;

which clears the selection successfully. But that can't be the right way to clear the selection?

Tim

          

Answer 1

please see if UnselectAll works:

Test.UnselectAll();

hope this helps!

Answer 2

Hi Shreeharsh

No such method apparently, for Store apps.

Tim

Answer 3

Hi Tim,

Good question, I use following code to unselect the ListView

Test.SelectedIndex = -1;

Hope helps.

--James

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Answer 4

Ah, that works. Thanks.

Tim

Answer 5

For a single selection ListView set SelectedItem to null. For a multiple or extended selection ListView you can also call Clear() on the SelectedItems collection.

You will get an exception if you call SelectedItems.Clear on a SelectionMode.Single ListView.

--Rob