private void button2_Click(object sender, EventArgs e)
{
if (groupid == "")
{
return;
}
listView2.Items.Clear();
WXService wxs = new WXService();
wxcaozuo wxcz = new wxcaozuo();
wxcz.Delete();
JObject contact_result = wxs.GetGroupItem(groupid); //群聊
if (contact_result != null)
{
this.listView2.BeginUpdate(); //数据更新，UI暂时挂起，直到EndUpdate绘制控件，可以有效避免闪烁并大大提高加载速度
foreach (JObject contactlist in contact_result["ContactList"]) //完整好友名单
{
foreach (JObject contact in contactlist["MemberList"]) //完整好友名单
{
WXUser user = new WXUser();
ListViewItem lvi = new ListViewItem();
lvi.Text = contact["NickName"].ToString();
this.listView2.Items.Add(lvi);
wxcz.Write("<NickName>" + contact["NickName"].ToString() + "<UserName>" + contact["UserName"].ToString() + Environment.NewLine, "Append");
}
}
this.listView2.EndUpdate(); //结束数据处理，UI界面一次性绘制。
}
}
