protected void Page_Load(object sender, EventArgs e)
{
// local variables
int DtDays = 365;
DateTime endDate = DateTime.Now.Date;
DateTime startDate = endDate.AddDays(-DtDays);
string chartUrl;
string chartTitle;
if ( !( Page.IsPostBack ) )
{
// initialize control values
this.initialize();
DataManager manager = new DataManager();
// validate user input
PageUrlValidator validator = new PageUrlValidator(Context.Request.QueryString, manager);
validator.Validate();
endDate = this.ResolveDate();
startDate = this.SetPeriod(endDate);
TimeInterval interval = new TimeInterval(startDate, endDate);
//input is valid - get station and variable
if ( validator.IsValidVariable )
{
SetupVariable(validator.Variable);
// set values of StationListLink URL
this.SetStationListUrl(validator.Variable);
if ( validator.IsValidStation )
{
SetupStation(validator.Station);
}
}
//chart title..
chartTitle = this.createChartTitle(validator, startDate, endDate);
Master.PageTitle = chartTitle;
// get station and variable (might not be valid)
Variable varInfo = validator.Variable;
Station stInfo = validator.Station;
// set right url of the language hyperlink
string LangPath = this.CreateLanguageLink(varInfo);
Master.LanguageUrl = LangPath;
// decide if we should use hourly or daily precipitation
if ( varInfo.VarEnum == VariableEnum.Precip && interval.Length.TotalDays < 11)
{
if ( CheckHourlyPrecipAvailable(varInfo, stInfo, startDate, endDate, manager) )
{
varInfo.VarEnum = VariableEnum.PrecipHour;
}
}
// assign image url to the chart image
chartUrl = this.createChartUrl(varInfo.ShortName, stInfo.StationId, startDate, endDate);
nplot_image.Attributes["src"] = chartUrl;
nplot_image.Attributes["alt"] = chartTitle;
nplot_image.Attributes["title"] = chartTitle;
// create the "statistics" window
if ( validator.IsValid )
{
CreateStatistics(varInfo, stInfo, startDate, endDate, manager);
}
}
}
// creates the string for page title and chart alternative text and meta-description
private string createChartTitle(PageUrlValidator validator, DateTime start, DateTime end)
{
string varStr = "";
string outStr = "";
string noStationVariable = "";
string errorMsg = "";
CultureInfo cultInfo = Thread.CurrentThread.CurrentCulture;
if ( validator.IsValidStation )
{
Station stInfo = validator.Station;
Variable varInfo = validator.Variable;
string stFullName = stInfo.Name;
string stFullName2 = stInfo.Name;
try
{
if (stInfo.River != null)
{
if (stInfo.River.Name.Length > 0)
{
stFullName = stInfo.River + " - " + stFullName;
stFullName2 = stInfo.River + ", " + stFullName2;
}
}
}
catch (NullReferenceException ex)
{
stFullName2 = stFullName;
//this is an exception
}
varStr = varInfo.Name;
//check if it's a valid station-variable combination
if (!validator.IsValidStationVariable)
{
noStationVariable = ( cultInfo.Name == "cs-CZ" ? " (chybí mìøení)" : " (no data)" );
errorMsg = validator.ErrorMessage;
}
outStr = String.Format(@"{0}: {1}, {2} - {3} {4}",
varStr, stFullName, start.ToString(cultInfo.DateTimeFormat.ShortDatePattern,
cultInfo.DateTimeFormat),
end.ToString(cultInfo.DateTimeFormat.ShortDatePattern,
cultInfo.DateTimeFormat),
noStationVariable);
// create main page heading ...
H1.Text = string.Format("{0} - {1} {2}", varStr, stFullName2, noStationVariable);
string stMetaName = ( cultInfo.Name == "cs-CZ" ? "ve stanici" : "in" );
string riverName = "";
string riverMetaName = "";
if ( varInfo.VarEnum == VariableEnum.Stage | varInfo.VarEnum == VariableEnum.Discharge )
{
if ( stInfo.River != null )
{
riverName = stInfo.River.Name;
riverMetaName = ( cultInfo.Name == "cs-CZ" ? "na øece " : "on the river " ) + riverName;
}
}
// add meta content-language tag...
Master.MetaLanguage =
String.Format("\n<meta http-equiv='content-language' content='{0}' />\n",
cultInfo.TwoLetterISOLanguageName);
// add the meta description ...
Master.MetaDescription =
String.Format("<meta name='description' content='{0} {3} {1} {2}' />\n",
varStr, stMetaName, stInfo.Name, riverMetaName);
// add meta keywords ...
Master.MetaKeywords =
String.Format("<meta name='keywords' content='{0}, {1}, {2}' />\n",
varStr, stInfo.Name, riverName);
}
else if ( validator.IsValidVariable )
{
// UNKNOWN station - STATION NOT FOUND .......
errorMsg = validator.ErrorMessage;
// create main page heading ...
varStr = validator.Variable.Name;
// create main page heading ...
string noStationFound = ( cultInfo.Name == "cs-CZ" ? " (stanice nebyla nalezena)" : " (no station found)" );
H1.Text = string.Format("{0} {1}", varStr, noStationVariable);
outStr = String.Format(@"{0}: {1} {2}",
varStr, validator.Station.Name, noStationFound);
// add meta content-language tag...
Master.MetaLanguage =
String.Format("\n<meta http-equiv='content-language' content='{0}' />\n",
cultInfo.TwoLetterISOLanguageName);
// add the meta description ...
Master.MetaDescription =
String.Format("<meta name='description' content='{0} {1} {2}' />\n",
varStr, validator.Station.Name, noStationFound);
// add meta keywords ...
Master.MetaKeywords =
String.Format("<meta name='keywords' content='{0}, {1}' />\n",
varStr, noStationFound);
}
else
{
H1.Text = "ERROR - Bad variable specified!";
outStr = validator.ErrorMessage;
}
return outStr;
}
