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listbox_selectall_1125513670.md

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-api-id -api-type
M:Microsoft.UI.Xaml.Controls.ListBox.SelectAll
winrt method

Microsoft.UI.Xaml.Controls.ListBox.SelectAll

-description

Selects all the items in the ListBox control.

-remarks

Warning

The SelectAll method should only be called when the SelectionMode property is set to Multiple or Extended. If SelectAll is called when the SelectionMode is Single, an exception is thrown.

-examples

if (listBox.SelectionMode != SelectionMode.Single)
{
    listBox.SelectAll();
}
if (listBox().SelectionMode() != Windows::UI::Xaml::Controls::SelectionMode::Single)
{
    listBox().SelectAll();
}

if (listBox->SelectionMode != SelectionMode::Single)
{
    listBox->SelectAll();
}

-see-also