public static object EnumToObject(PropertyGridOptionsAttribute options, Type propertyType, object value)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
if (propertyType == null)
{
throw new ArgumentNullException("propertyType");
}
if (value != null && propertyType.IsEnum)
{
return(Extensions.EnumToObject(propertyType, value));
}
if (value != null && value.GetType().IsEnum)
{
return(Extensions.EnumToObject(value.GetType(), value));
}
if (propertyType != typeof(string))
{
return(ConversionService.ChangeType(value, propertyType));
}
if (options == null || options.EnumNames == null || options.EnumValues == null || options.EnumValues.Length != options.EnumNames.Length)
{
return(ConversionService.ChangeType(value, propertyType));
}
if (BaseConverter.IsNullOrEmptyString(value))
{
return(string.Empty);
}
StringBuilder sb = new StringBuilder();
string svalue = string.Format("{0}", value);
ulong ul;
if (!ulong.TryParse(svalue, out ul))
{
var enums = ParseEnum(svalue);
if (enums.Count == 0)
{
return(string.Empty);
}
var enumValues = options.EnumValues.Select(v => string.Format("{0}", v)).ToArray();
foreach (string enumValue in enums)
{
int index = IndexOf(enumValues, enumValue);
if (index < 0)
{
index = IndexOf(options.EnumNames, enumValue);
}
if (index >= 0)
{
if (sb.Length > 0)
{
sb.Append(", ");
}
sb.Append(options.EnumNames[index]);
}
}
}
else // a string
{
ulong bitsCount = (ulong)GetEnumMaxPower(options) - 1; // skip first
ulong b = 1;
for (ulong bit = 1; bit < bitsCount; bit++) // signed, skip highest bit
{
if ((ul & b) != 0)
{
int index = IndexOf(options.EnumValues, b);
if (index >= 0)
{
if (sb.Length > 0)
{
sb.Append(", ");
}
sb.Append(options.EnumNames[index]);
}
}
b *= 2;
}
}
return(sb.ToString());
}