}// end GetNextChunk
#region Pager
/// <summary>
///
/// NB. EntryPoint : every paging operation enters here.
/// Request.Params["parPage"] e' il parametro che governa la selezione di pagina.
/// E' un parametro http-get, contenuto nella url.
/// Se il Ctor() ha fallito, il metodo abortisce. La verifica di successo del Ctor() e':
/// null != Session["CacherDbView"]
///
/// </summary>
public void Pager_EntryPoint(
System.Web.SessionState.HttpSessionState Session
, System.Web.HttpRequest Request
, System.Web.UI.WebControls.GridView grdDatiPaginati
, System.Web.UI.WebControls.Panel pnlPageNumber
)
{
object objCacherDbView = Session["CacherDbView"];
if (null == objCacherDbView)
{
return;// component called when the cache is not yet ready -> return on empty page.
}// else bring to DataBind().
//
string parPage = Request.Params["parPage"];
int paginaDesiderata = 1;// default
try
{
paginaDesiderata = int.Parse(parPage);
if (
this.rowCardinality < this.RowsInChunk || // caso di una sola pagina ed incompleta
System.Math.Ceiling((double)this.rowCardinality / (double)this.RowsInChunk) < (double)paginaDesiderata // pagine disponibili non arrivano al numero di pagina richiesto: NB. double needed to do not loose the last page_fraction.
)
{
paginaDesiderata = 1;// back to default.
}// else paginaDesiderata is possible.
}
catch
{
paginaDesiderata = 1;// default on missing or wrong get-parameter "parPage".
}
System.Data.DataTable dt = null;
this.PageIndexManager(//----NB. internal call, for querying required-page data-----------------------------------------------------------
Session
, Request
, paginaDesiderata
, pnlPageNumber
, out dt // the chunk-data, to be filled.
);
grdDatiPaginati.DataSource = dt;
grdDatiPaginati.DataBind();
//
if (null != Session["DynamicPortionPtr"])// NB. tested: indispensable to renew it in Session, at every round-trip.
{
CacherDbView.DynamicPortionPtr dynamicPortionPtr =
(CacherDbView.DynamicPortionPtr)(Session["DynamicPortionPtr"]);
dynamicPortionPtr();// finally, call it.
}// else nothing to be executed post-binding.
}//
private int indexOfAllSectors; // it's one after the last id in the table.
protected void Page_Load(object sender, EventArgs e)
{
if (!VerificaLasciapassare.CanLogOn(
this.Session,
this.Request.UserHostAddress
)
)
{
this.Session["indexOfAllSectors"] = null;// be sure to clean.
this.Response.Redirect("../errore.aspx");
}// else il lasciapassare e' valido -> get in.
//
// PostBack or not, refresh in Session, the present addres of the DynamicPortion method, which has
// to be called from PagerDbView. Such address changes at every round-trip( tested).
CacherDbView.DynamicPortionPtr dynamicPortionPtr = new CacherDbView.DynamicPortionPtr(
this.prepareLavagnaDynamicPortion);
this.Session["DynamicPortionPtr"] = dynamicPortionPtr;
//
/*
* NB. page state check.-----------------------------------------------------------------
*
*/
PageStateChecker.PageStateChecker_SERVICE(
"zonaRiservata_queryCandidato"
, this.Request
, this.IsPostBack
, this.Session
);
//----------------------------------------------- END page state check.-----------------
if (
!this.IsPostBack &&//----------------------------------------------------false
!(bool)(this.Session["IsReEntrant"]) //-----------------------------false
)
{ // first absolute entrance
//
ComboManager.populate_Combo_ddlSettore_for_LOAD( //---primo popolamento.
this.ddlSettori,
0 // "null" or <0, for no preselection. Instead to preselect choose the ordinal; eg. 2=="Appalti", 0 for "choose your Sector", which performs no query.
, out indexOfAllSectors
);
this.Session["indexOfAllSectors"] = indexOfAllSectors; // NB.---cache across postbacks.-----
this.Session["comboSectors_selectedValue"] = 0; // NB.---cache across postbacks.-----
//
this.loadData(0); // means no query.
}
else if (
!this.IsPostBack &&//----------------------------------------------------false
(bool)(this.Session["IsReEntrant"]) //------------------------------true
)
{ // coming from html-numbers of pager
// needed combo-refresh, but re-select combo-Value from Session --------
//
int int_comboSectors_selectedValue = (int)(this.Session["comboSectors_selectedValue"]); // NB.---cache across postbacks.-----
ComboManager.populate_Combo_ddlSettore_for_LOAD( //---primo popolamento.
this.ddlSettori,
int_comboSectors_selectedValue // "null" or <0, for no preselection. Instead to preselect choose the ordinal; eg. 2=="Appalti", 0 for "choose your Sector", which performs no query.
, out indexOfAllSectors
);
this.Session["indexOfAllSectors"] = indexOfAllSectors;// NB.---cache across postbacks.-----
//
// pager will load the new-chunk, based on a get-param.
object obj_CacherDbView = this.Session["CacherDbView"];
if (null != obj_CacherDbView)
{
((CacherDbView)obj_CacherDbView).Pager_EntryPoint(
this.Session
, this.Request
, this.grdDatiPaginati
, this.pnlPageNumber
);
}
else
{
loadData(int_comboSectors_selectedValue); // TODO debug
// don't throw new System.Exception(" queryCandidato::Page_Load . this.Session[CacherDbView] is null. ");
}
}
else if (
this.IsPostBack &&//------------------------------------------------------true
!(bool)(this.Session["IsReEntrant"]) //------------------------------false
)
{
// don't: throw new System.Exception(" impossible case: if IsReEntrant at least one entry occurred. ");
}
else if (
this.IsPostBack &&//------------------------------------------------------true
(bool)(this.Session["IsReEntrant"]) //-------------------------------true
)
{ // coming from combo-index-changed.
// no combo-refresh.
// drop the current view and create the new one, by delegate ddlSettoriRefreshQuery.
} // no "else" possible: case mapping is complete.
} // end Page_Load
protected void Page_Load(object sender, EventArgs e)
{
if (!VerificaLasciapassare.CanLogOn(
this.Session,
this.Request.UserHostAddress
)
)
{
this.Session["indexOfAllSectors"] = null;// be sure to clean.
this.Response.Redirect("../errore.aspx");
}// else il lasciapassare e' valido -> get in.
//
// PostBack or not, refresh in Session, the present addres of the DynamicPortion method, which has
// to be called from PagerDbView. Such address changes at every round-trip( tested).
CacherDbView.DynamicPortionPtr dynamicPortionPtr = new CacherDbView.DynamicPortionPtr(
this.prepareLavagnaDynamicPortion);
this.Session["DynamicPortionPtr"] = dynamicPortionPtr;
//
/*
* NB. page state check.-----------------------------------------------------------------
*
*/
PageStateChecker.PageStateChecker_SERVICE(
"zonaRiservata_PrimeDataGrid"
, this.Request
, this.IsPostBack
, this.Session
);
//----------------------------------------------- END page state check.-----------------
if (
!this.IsPostBack &&//----------------------------------------------------false
!(bool)(this.Session["IsReEntrant"]) //-----------------------------false
)
{ // first absolute entrance
//
this.fieldReader_withDefaults_();
this.loadData(this.minKey, this.maxKey); // min==max means no query, min<max queries.
}
else if (
!this.IsPostBack &&//----------------------------------------------------false
(bool)(this.Session["IsReEntrant"]) //------------------------------true
)
{ // coming from html-numbers of pager
// needed combo-refresh, but re-select combo-Value from Session NB. --------
// pager will load the new-chunk, based on a get-param.
object obj_CacherDbView = this.Session["CacherDbView"];
if (null != obj_CacherDbView)
{
((CacherDbView)obj_CacherDbView).Pager_EntryPoint(
this.Session
, this.Request
, this.grdDatiPaginati
, this.pnlPageNumber
);
}
else
{
this.fieldReader_withDefaults_();
this.loadData(this.minKey, this.maxKey);// min==max means no query, min<max queries.
LoggingToolsContainerNamespace.LoggingToolsContainer.LogBothSinks_DbFs(
" PrimeGrid::Page_Load . this.Session[CacherDbView] is null: re-built. "
, 0);
}
//
System.Web.UI.WebControls.TextBox txtRowsInPage = null;
try
{
txtRowsInPage =
(System.Web.UI.WebControls.TextBox)(this.PageLengthManager1.FindControl("txtRowsInPage"));
txtRowsInPage.Text = ((CacherDbView)(this.Session["CacherDbView"])).RowsInChunk.ToString();
}
catch (System.Exception ex)
{
string dbg = ex.Message + "___" + ex.StackTrace;
}
}
else if (
this.IsPostBack &&//------------------------------------------------------true
!(bool)(this.Session["IsReEntrant"]) //------------------------------false
)
{
}
else if (
this.IsPostBack &&//------------------------------------------------------true
(bool)(this.Session["IsReEntrant"]) //-------------------------------true
)
{ // coming from combo-index-changed.
// system calls btn_delegate()
}// no "else" possible: case mapping is complete.
}// end Page_Load
protected void Page_Load(object sender, EventArgs e)
{
if (!VerificaLasciapassare.CanLogOn(
this.Session,
this.Request.UserHostAddress
)
)
{
this.Response.Redirect("../errore.aspx");
}// else il lasciapassare e' valido -> get in.
//
//
// PostBack or not, refresh in Session, the present addres of the DynamicPortion method, which has
// to be called from PagerDbView. Such address changes at every round-trip( tested).
CacherDbView.DynamicPortionPtr dynamicPortionPtr = new CacherDbView.DynamicPortionPtr(
this.prepareLavagnaDynamicPortion);
this.Session["DynamicPortionPtr"] = dynamicPortionPtr;
//
/*
* NB. page state check.-----------------------------------------------------------------
*
*/
PageStateChecker.PageStateChecker_SERVICE(
"zonaRiservata_cvMultiRead"
, this.Request
, this.IsPostBack
, this.Session
);
//----------------------------------------------- END page state check.-----------------
if (
!this.IsPostBack &&//----------------------------------------------------false
!(bool)(this.Session["IsReEntrant"]) //-----------------------------false
)
{ // first absolute entrance
object ref_candidato_id = this.Session["ref_candidato_id"];
if (null == ref_candidato_id)
{
throw new System.Exception("ref_candidato_id cannot be missing, in this page.");
}// else continue.
int int_ref_candidato_id;
try
{
int_ref_candidato_id = (int)ref_candidato_id;
System.Data.DataTable tblCandidatoDescription =
Entity.Proxies.usp_candidato_LOAD_Description_SERVICE.usp_candidato_LOAD_Description(
int_ref_candidato_id
);
// table should be as: {Kral Hannes, Diritto Societario}
// es. this.lblDeCuius.Text = "Gino Paoli / settore_BLA";
this.lblDeCuius.Text =
(string)(tblCandidatoDescription.Rows[0].ItemArray[0])
+ " / "
+ (string)(tblCandidatoDescription.Rows[0].ItemArray[1]);
//
this.lblDeCuius.BackColor = System.Drawing.Color.Transparent;
}
catch (System.Exception ex)
{
string dbg = ex.Message;
this.lblDeCuius.Text = "Errore. Utilizzare i menu per il cambio pagina, non i bottoni della cache. ";
this.lblDeCuius.BackColor = System.Drawing.Color.LightCoral;
int_ref_candidato_id = -1;// Proxy will manage.
}
//
this.loadData(int_ref_candidato_id);
}
else if (
!this.IsPostBack &&//----------------------------------------------------false
(bool)(this.Session["IsReEntrant"]) //------------------------------true
)
{ // coming from html-numbers of pager
//
// pager will load the new-chunk, based on a get-param.
object obj_CacherDbView = this.Session["CacherDbView"];
if (null != obj_CacherDbView)
{
((CacherDbView)obj_CacherDbView).Pager_EntryPoint(
this.Session
, this.Request
, this.grdDatiPaginati
, this.pnlPageNumber
);
}
else
{
throw new System.Exception(" candidatoLoad::Page_Load . this.Session[CacherDbView] is null. ");
}
}
else if (
this.IsPostBack &&//------------------------------------------------------true
!(bool)(this.Session["IsReEntrant"]) //------------------------------false
)
{
}
else if (
this.IsPostBack &&//------------------------------------------------------true
(bool)(this.Session["IsReEntrant"]) //-------------------------------true
)
{ // coming from RowCommand buttons.
}// no "else" possible: case mapping is complete.
}//