小编Joh*_*ith的帖子

private void checkBox1_Checked(object sender, RoutedEventArgs e)
{
    if (checkBox1.IsChecked == false)
    {
        grid1.Visibility = System.Windows.Visibility.Hidden;
    }

    if (checkBox1.IsChecked == true)
    {
        grid1.Visibility = Visibility;
    }

}

为什么 grid1.Visibility = System.Windows.Visibility.Hidden;不工作,网格不隐藏

如果我设置属性:

EnableRowVirtualization="True"
RowDetailsVisibilityMode="VisibleWhenSelected"
SelectionMode="Extended"
SelectionUnit="Cell"

我的数据网格,然后:

int parse = dataGrid1.SelectedIndex;

返回"-1",为什么？