private void btnHistoricsList_Click(object sender, EventArgs e)
{
if (frmListHistoricsQueries == null || !frmListHistoricsQueries.Visible)
{
frmListHistoricsQueries = new ListHistoricsQueriesForm();
frmListHistoricsQueries.Show(this);
}
else
{
frmListHistoricsQueries.Focus();
}
}
