private void delButton_Click(object sender, RoutedEventArgs e)
{
if (this.dataGrid1.SelectedIndex >= 0)
{
role r = this.dataGrid1.SelectedItem as role;
if (r != null)
{
if (UserRole.Del(r))
{
MessageAlert.Alert("删除成功！");
}
else
{
MessageAlert.Alert("该条信息不能删除！");
}
}
BindRole();
}
}