private void grv_FocusedRowChanged(object sender, DevExpress.XtraGrid.Views.Base.FocusedRowChangedEventArgs e)
{
string pid = grv.GetFocusedRowCellValue(colPID).ToString();
ServerToClient sc = new ServerToClient();
PatientContext px = new PatientContext();
sc = px.GetTreatments(pid);
grdT.DataSource = sc.DT;
grvT_FocusedRowChanged(null, null);
}