//Cancelamento private void btnExecCanc_Click(object sender, EventArgs e) { try { Cursor = Cursors.WaitCursor; btnExecCanc.Enabled = false; asscshcte.asscshcte cte = new asscshcte.asscshcte(); MessageBox.Show(cte.CTeCancelamento(txtCanChCte.Text, txtCanNProt.Text, txtCanxJust.Text) , "Cancelamento CT-e", MessageBoxButtons.OK, MessageBoxIcon.Information); } finally { Cursor = Cursors.Default; btnExecCanc.Enabled = true; } }