93 lines
3.4 KiB
C#
93 lines
3.4 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Collections;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.ComponentModel;
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using System.Globalization;
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using UnitsNet.Units;
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using UnitsNet;
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namespace CaeGlobals
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{
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public class StringIntegerDefaultConverter : TypeConverter
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{
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// Variables
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protected ArrayList values;
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protected string _default = "Default";
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protected static int _initialValue = 0;
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// Properties
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public static int SetInitialValue
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{
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set
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{
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_initialValue = value;
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}
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}
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// Constructors
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public StringIntegerDefaultConverter()
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{
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// Initializes the standard values list with defaults.
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values = new ArrayList(new int[] { int.MinValue, _initialValue });
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}
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// Methods
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public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
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{
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return true;
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}
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public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
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{
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// Passes the local integer array.
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StandardValuesCollection svc = new StandardValuesCollection(values);
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return svc;
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}
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public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
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{
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if (sourceType == typeof(string)) return true;
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else return base.CanConvertFrom(context, sourceType);
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}
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public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
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{
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// Convert from string
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if (value is string valueString)
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{
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if (Equals(valueString, _default)) return int.MinValue;
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else
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{
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double valueDouble = MyNCalc.ConvertFromString(valueString, ConvertToCurrentUnits);
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return (int)Math.Round(valueDouble, MidpointRounding.AwayFromZero);
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}
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}
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else return base.ConvertFrom(context, culture, value);
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}
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public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
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{
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try
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{
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if (destinationType == typeof(string))
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{
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if ((int)value == int.MinValue) return _default;
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else return value.ToString();
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}
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return base.ConvertTo(context, culture, value, destinationType);
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}
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catch
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{
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return base.ConvertTo(context, culture, value, destinationType);
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}
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}
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public static double ConvertToCurrentUnits(string valueWithUnitString)
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{
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throw new Exception(valueWithUnitString + " is not a valid value for Int.");
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}
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}
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}
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