C#中lsitView如何搜索某个子项

/// <summary>
/// 查找listview中特定列所包含的指定值所在的index
/// </summary>
/// <param name="view">要查找的listview控件</param>
/// <param name="name">指定的列name</param>
/// <param name="val">要查找的值</param>
/// <returns>查找到的值,-1为没查到</returns>
public int getListViewId(ListView view, string name, string val)
{
	for (int i = 0; i < view.Items.Count; i++)
	{
		if (view.Items[i].SubItems[name].Text == val)
			return i;
	}
	return -1;
}

ListViewItem li = ListViewUser.Items.Cast<ListViewItem>().First(x => x.Text == "1005" && x.SubItems["city"].Text == "北京");
string val = li.SubItems["city"].Text;