private void feedAccessTokenToolStripMenuItem_Click(object sender, EventArgs e) { for (int iINdex = 0; iINdex < gridData.Rows.Count; iINdex++) { Task task = Task.Factory.StartNew(() => { FaceBookController fbController = new FaceBookController(); FaceBook model = gridData.Rows[iINdex].DataBoundItem as FaceBook; fbController.FeedAccessToken(model); }); task.Wait(); } }