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List<int> idList = new List<int>();
foreach (DataGridViewRow dr in this.dataGridView1.SelectedRows)
{
idList.Add(int.Parse(dr.Cells["id"].Value.ToString().Trim()));
}
MessageBox.Show(idList[0].ToString());
List<int> idList = new List<int>();
foreach (DataRow dr in this.dataGridView1.SelectedRows)
{
idList.Add(int.Parse(dr["id"].ToString()));
}
DataGridViewRowCollection rows = DataGridView.SelectedRows;