private void deleteAllButton_Click(object sender, EventArgs e) { Cursor.Current = Cursors.WaitCursor; int deletedCount = 0; int result = BSSDK.BS_DeleteLog(m_Handle, 0, ref deletedCount); Cursor.Current = Cursors.Default; if (result != BSSDK.BS_SUCCESS) { MessageBox.Show("Cannot delete log records", "Error"); return; } numOfLog.Text = "0"; logList.Items.Clear(); }