Listview 与datagridview的数据更新差异点

作为新鸟的我,这两天试着做个小程序,用listView 控件显示数据,但是数据再后台base 刷新后,总是无法同步的更新

控件数据。前期习惯用datagridview 显示数据,只需要一个datatable绑定DataSource,在刷新datatable 的同时,前台的

控件数据也同步刷新,这次傻了。。。。。

错误代码:

private void TabControl1_SelectedIndexChanged(object sender, EventArgs e)
        {
            
            if (this.tabControl1.SelectedTab.Text == "出租")
            {
                string strLendText = "select User_IDS,User_nameS,User_homePhone,User_cardID,User_phone  from  tb_User where User_type='lend'";
                fillDateWithTable(strLendText);
            }
            else if (this.tabControl1.SelectedTab.Text == "求租")
            {
                string strLendText = "select User_IDS,User_nameS,User_homePhone,User_cardID,User_phone  from  tb_User where User_type='want'";
                fillDateWithTable(strLendText);
            }
        }

经过几次尝试,发现在数据刷新前,先调用listview 的clear 方法,清空控件数据,重新填充,这样就可以实现数据的实时显示

lvUserInfo.Items.Clear();
private void TabControl1_SelectedIndexChanged(object sender, EventArgs e)
        {
            lvUserInfo.Items.Clear();
            if (this.tabControl1.SelectedTab.Text == "出租")
            {
                string strLendText = "select User_IDS,User_nameS,User_homePhone,User_cardID,User_phone  from  tb_User where User_type='lend'";
                fillDateWithTable(strLendText);
            }
            else if (this.tabControl1.SelectedTab.Text == "求租")
            {
                string strLendText = "select User_IDS,User_nameS,User_homePhone,User_cardID,User_phone  from  tb_User where User_type='want'";
                fillDateWithTable(strLendText);
            }
        }

 

posted @ 2020-04-06 10:08  逯文杰  阅读(472)  评论(0编辑  收藏  举报