Question

当我在dataGridView中选中一个复选框时，我选中的复选框会自动变为false，因为我每秒刷新一次dataGridView。我想发生的是选中dataGridView复选框时取消每秒刷新。

这是我的代码：

private void UpdateVisitors_Load(object sender, EventArgs e)
{
    //Realtime refresh
    refresher.Interval = (1 * 1000); // 10 secs
    refresher.Tick += new EventHandler(refresh);
    refresher.Start();
}

private void refresh(object sender, EventArgs e)
{
   refreshLocal();
}

更新这是我用来刷新dataGridView的refreshLocal代码

 void refreshLocal()
    {
        dgvLocal.Rows.Clear();
        connection.Close();
        connection.Open();

        SqlCommand cmd = connection.CreateCommand();
        cmd.CommandText = "Select * from tbl_Registration ORDER BY [ID] DESC;";
        SqlDataAdapter adap = new SqlDataAdapter(cmd);
        DataSet ds = new DataSet();
        adap.Fill(ds);
        foreach (DataRow dr in ds.Tables[0].Rows)
        {
            myID = dr["ID"].ToString();
            category = dr["Category"].ToString();
            repname = dr["Representative"].ToString();
            if (dr["City/Province"].ToString() == "")
            {
                city = dr["Province"].ToString();
            }
            else
            {
                city = dr["City/Province"].ToString();
            }
            pax = dr["Pax"].ToString();
            male = dr["Male"].ToString();
            female = dr["Female"].ToString();
            students = dr["Students"].ToString();
            ar = dr["AR Users"].ToString();
            date = dr["Date & Time Added"].ToString();
            dgvLocal.Rows.Add(false, myID, category, repname, city, pax,students, ar, date);
        }
        connection.Close();
    }

Answer 1

您需要绑定到DataGridView的事件CellValueChanged，并在处理程序内部，根据复选框的值停止计时器。

SELECT ID, MIN(UniqueValue)
FROM Sample_Table
WHERE ID in ('Bob', 'Sam', 'Kyle', 'Jordan')
GROUP BY ID;

C＃检查是否选中了datagridview中的任何复选框

1 个答案: