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wg_cpso/CaeGlobals/UnitSystem/StringToDouble/StringLengthConverter.cs

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C#
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2026-03-25 18:20:24 +08:00
using System;
using System.Collections.Generic;
using System.Collections;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.ComponentModel;
using System.Globalization;
using UnitsNet;
using UnitsNet.Units;
namespace CaeGlobals
{
public class StringLengthConverter : TypeConverter
{
// Variables
protected static LengthUnit _lengthUnit = LengthUnit.Meter;
// Properties
public static string GetUnitAbbreviation()
{
if ((int)_lengthUnit == MyUnit.NoUnit) return "";
else return Length.GetAbbreviation(_lengthUnit);
}
public static string SetUnit
{
set
{
if (value == "") _lengthUnit = (LengthUnit)MyUnit.NoUnit;
else _lengthUnit = Length.ParseUnit(value);
}
}
// Constructors
public StringLengthConverter()
{
}
// Methods
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
{
if (sourceType == typeof(string)) return true;
else return base.CanConvertFrom(context, sourceType);
}
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
// Convert from string
if (value is string valueString) return MyNCalc.ConvertFromString(valueString, ConvertToCurrentUnits);
else return base.ConvertFrom(context, culture, value);
}
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
// Convert to string
try
{
if (destinationType == typeof(string))
{
if (value is double valueDouble)
{
string valueString = valueDouble.ToString();
if ((int)_lengthUnit != MyUnit.NoUnit) valueString += " " + GetUnitAbbreviation();
return valueString;
}
}
return base.ConvertTo(context, culture, value, destinationType);
}
catch
{
return base.ConvertTo(context, culture, value, destinationType);
}
}
//
public static double ConvertToCurrentUnits(string valueWithUnitString)
{
try
{
Length length = Length.Parse(valueWithUnitString);
if ((int)_lengthUnit != MyUnit.NoUnit) length = length.ToUnit(_lengthUnit);
return length.Value;
}
catch (Exception ex)
{
throw new Exception(ex.Message + Environment.NewLine + Environment.NewLine + SupportedUnitAbbreviations());
}
}
public static string SupportedUnitAbbreviations()
{
string abb;
string supportedUnitAbbreviations = "Supported length abbreviations: ";
var allUnits = Length.Units;
for (int i = 0; i < allUnits.Length; i++)
{
abb = Length.GetAbbreviation(allUnits[i]);
if (abb != null) abb.Trim();
if (abb.Length > 0) supportedUnitAbbreviations += abb;
if (i != allUnits.Length - 1) supportedUnitAbbreviations += ", ";
}
supportedUnitAbbreviations += ".";
//
return supportedUnitAbbreviations;
}
}
}