private void Form1_Load(object sender, System.EventArgs e)
{
listview.Columns.Add("Id",100,HorizontalAlignment.Left);
listview.Columns.Add("Name",100,HorizontalAlignment.Left);
listview.Columns.Add("Age",100,HorizontalAlignment.Left); listview.View = View.Details;
ListViewItem ivItem = new ListViewItem();
//这个只能使Id能修改,其他二项不行啊!!!!!!!!
        listview.LabelEdit = true;

ivItem.SubItems[0].Text="hhhh";

ivItem.SubItems.Add("kkk");
ivItem.SubItems.Add("jjj");
        this.listview.Items.Add(ivItem); 
}