bool TryGetUnit(string unit, out VoltageUnits units)
{
units = VoltageUnits.V;
if (unit.ToLower() == "v")
{
units = VoltageUnits.V;
}
else if (unit.ToLower() == "kv")
{
units = VoltageUnits.kV;
}
else if (unit.ToLower() == "mv")
{
units = VoltageUnits.mV;
}
else if (unit.ToLower() == "nv")
{
units = VoltageUnits.nV;
}
else if (unit.ToLower() == "uv")
{
units = VoltageUnits.μV;
}
else if (unit.ToLower() == "μv")
{
units = VoltageUnits.μV;
}
else
{
return(false);
}
return(true);
}
public static VoltageValue StrToVoltageValue(string value, out string message)
{
message = string.Empty;
var ss = _doubleRege.Split(value).Where(t =>
{
var s = t.Trim();
return(!(s == "," || s == "" || s == "，"));
});
string num = "";
string unit = "";
foreach (var s in ss)
{
if (_doubleRege.IsMatch(s))
{
num = s;
continue;
}
if (_unitRegex.IsMatch(s))
{
unit = s;
continue;
}
}
string vl = string.IsNullOrEmpty(unit) ? string.Empty : value.Replace(unit, string.Empty);
VoltageUnits units = VoltageUnits.V;
if (unit.ToLower() == "v")
{
units = VoltageUnits.V;
}
else if (unit.ToLower() == "kv")
{
units = VoltageUnits.kV;
}
else if (unit.ToLower() == "mv")
{
units = VoltageUnits.mV;
}
else if (unit.ToLower() == "nv")
{
units = VoltageUnits.nV;
}
else if (unit.ToLower() == "uv")
{
units = VoltageUnits.μV;
}
else if (unit.ToLower() == "μv")
{
units = VoltageUnits.μV;
}
else
{
if (double.TryParse(vl, out double d))
{
message = $"{unit}不是电压的有效单位,请尝试输入<{vl}kv/v/mv/μv/nv>格式";
return(null);
}
else
{
message = $"{unit}不是电压的有效值,请尝试输入<{num}kv/v/mv/μv/nv>格式";
return(null);
}
}
if (vl.EndsWith("."))
{
message = $"{vl}值不合法,请尝试输入<{num}{unit}>格式";
return(null);
}
if (double.TryParse(vl, out double dd))
{
return(new VoltageValue(dd, units));
}
message = $"{vl}值不合法,请尝试输入<{num}{unit}>格式";
return(null);
}
public VoltageValue(double value, VoltageUnits units)
{
_value = value;
_units = units;
}
