protected override void OnInit(EventArgs e)
{
var units = WebManager.GetUnits();
foreach (WebUnitGroup webUnitGroup in _webManager.WebUnitGroups)
{
if (webUnitGroup.Enabled == false)
{
continue;
}
// add a Unit Group (e.g. "Length", "Area") to the page
UnitGroupControl unitGroupControl = (UnitGroupControl)Page.LoadControl("~/UnitGroupControl.ascx");
unitGroupControl.Initialize(webUnitGroup);
// add all enabled Units (e.g. "Meter", "Yard") to the Unit Group control
foreach (WebUnit webUnit in _webManager.WebUnits)
{
if (webUnit.Enabled)
{
var unit = units.First(p => p.ID == webUnit.UnitID);
if (unit.Type == webUnitGroup.UnitType)
{
UnitControl unitControl = (UnitControl)Page.LoadControl("~/UnitControl.ascx");
unitControl.Initialize(webUnit);
unitGroupControl.AddUnitControl(unitControl);
}
}
}
UnitGroupsPlaceHolder.Controls.Add(unitGroupControl);
}
}
public List <FormattedUnit> RecalculateString(string unitName, string unitValue)
{
var result = new List <FormattedUnit>();
// ensure that the unit name and unit value is okay
if (string.IsNullOrEmpty(unitName) || string.IsNullOrEmpty(unitValue))
{
throw new Exception("The unit name or the unit value is empty!");
}
UnitID?unitID = unitName.GetUnitID();
if (unitID.HasValue == false)
{
throw new Exception(string.Format("The unit name '{0}' is unknown!", unitName));
}
// find the source unit and all other units of the same type
var sourceUnit = WebManager.GetUnit(unitID.Value);
var unitType = WebManager.GetUnit(unitID.Value).Type;
// if user entered a number, recalculate all other units
int?roundToDecimals = null;
sourceUnit.Magnitude = double.NaN;
var units = WebManager.GetUnits(unitType);
var parts = WebManager.GetStringParts(unitValue);
foreach (IUnit unit in units)
{
string unitvalue = string.Empty;
foreach (var part in parts)
{
string text = part.Item1;
bool isNumber = part.Item2;
if (isNumber)
{
sourceUnit.Magnitude = double.Parse(text);
roundToDecimals = sourceUnit.GetDecimalPlaces() + 4;
var currentUnit = WebManager.Recalculate(sourceUnit).First(p => p.ID == unit.ID) as Unit;
if (roundToDecimals.HasValue)
{
var placesBeforeDecimalPoint = currentUnit.GetPlacesBeforeDecimalPoint();
if (placesBeforeDecimalPoint > 4)
{
roundToDecimals = placesBeforeDecimalPoint;
}
var scientific = currentUnit.ToScientificNotation(roundToDecimals.Value);
currentUnit.Magnitude = scientific.ToDouble();
}
unitvalue += ((FormattedUnit)currentUnit).UnitValue;
}
else
{
unitvalue += text;
}
}
FormattedUnit formattedUnit = (FormattedUnit)(Unit)unit;
formattedUnit.UnitValue = unitvalue;
result.Add(formattedUnit);
}
return(result);
}