private Task <GetSoilTestNitrateOverrideViewModel> GetSoilTestNitrateOverrideAsync(string fldName)
{
GetSoilTestNitrateOverrideViewModel soilvm = new GetSoilTestNitrateOverrideViewModel();
// get the current associated value for nitrogen credit. Note, can be null
SERVERAPI.Utility.ChemicalBalanceMessage calculator = new Utility.ChemicalBalanceMessage(_ud, _sd);
FarmDetails farmdtl = _ud.FarmDetails();
Field fld = _ud.GetFieldDetails(fldName);
soilvm.display = false;
if ((fld.crops != null) && (fld.soilTest != null))
{
if (fld.crops.Count() > 0)
{
soilvm.display = _sd.IsNitrateCreditApplicable(farmdtl.farmRegion, fld.soilTest.sampleDate, Convert.ToInt16(farmdtl.year));
if (soilvm.display)
{
soilvm.fldName = fldName;
if (fld.SoilTestNitrateOverrideNitrogenCredit != null)
{
soilvm.nitrogen = Math.Round(Convert.ToDecimal(fld.SoilTestNitrateOverrideNitrogenCredit));
}
else
{
// lookup default Nitrogen credit
soilvm.nitrogen = Math.Round(fld.soilTest.valNO3H * _sd.GetSoilTestNitratePPMToPoundPerAcreConversionFactor());
}
}
else
{
fld.SoilTestNitrateOverrideNitrogenCredit = null;
_ud.UpdateField(fld);
}
}
else
{
fld.SoilTestNitrateOverrideNitrogenCredit = null;
_ud.UpdateField(fld);
}
}
else
{
fld.SoilTestNitrateOverrideNitrogenCredit = null;
_ud.UpdateField(fld);
}
return(Task.FromResult(soilvm));
}
public decimal calcSoitTestNitrateDefault(string fldName)
{
Field fld = _ud.GetFieldDetails(fldName);
if (fld != null)
{
if (fld.crops != null)
{
if ((fld.crops.Count() > 0) && (fld.soilTest != null))
{
return(fld.soilTest.valNO3H * _sd.GetSoilTestNitratePPMToPoundPerAcreConversionFactor());
}
}
}
return(0); // no Nitrogen credit as there are no crops
}
