if (lvUserInfo.SelectedIndices != null && lvUserInfo.SelectedIndices.Count > 0)
ListView.SelectedIndexCollection indexCollection = lvUserInfo.SelectedIndices;
txtUserID.Text = lvUserInfo.Items[indexCollection[0]].Text;
txtUserName.Text = lvUserInfo.Items[indexCollection[0]].SubItems[0].Text;
txtHomePhone.Text = lvUserInfo.Items[indexCollection[0]].SubItems[1].Text;
txtCardID.Text = lvUserInfo.Items[indexCollection[0]].SubItems[2].Text;
txtPhone.Text = lvUserInfo.Items[indexCollection[0]].SubItems[3].Text;