private void tbGrid_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
if (e.RowIndex >= 0)
{
DataGridViewRow row = this.tbGrid.Rows[e.RowIndex];
string src = row.Cells["wordColumn"].Value.ToString();
string tar = row.Cells["definitionColumn"].Value.ToString();
mainForm.findTermbaseOnline(src, tar);
mainForm.findTermbaseOffline(src);
rtbTermbase.Visible = false;
}
}