private void datagridview1_rowEnter(object sender, DataGridViewCellEventArgs e) { if (firstRun != true) { int id = int.Parse(dataGridView1.Rows[e.RowIndex].Cells["id"].Value.ToString()); sectorWindow.setSelected(id); //selectedDataGridRow = dataGridView1.Rows[e.RowIndex]; } firstRun = false; }