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private void timer1_Tick(object sender, EventArgs e)
{
if (idx == Convert.ToInt32(this.dataGridView1.Rows.Count - 1))
{
idx = 0;
}
this.dataGridView1.Rows[idx].Selected = true;
this.dataGridView1.FirstDisplayedScrollingRowIndex = idx;
idx = idx + 1;
}
this.dataGridView1.MultiSelect = false;
foreach (DataGridViewRow dr in this.dataGridView1.Rows) //发卡
{
dr.Selected = true;
this.dataGridView1.Refresh();
Thread.Sleep(300);
}