public override T Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
{
string text = reader.GetString();
if (EnumNameMapper <T> .TryGetValue(reader.GetString(), out T value))
{
return(value);
}
else
{
throw new JsonException($"Invalid enum value = {text}");
}
}
/// <summary>
/// Gets the enum value from EnumMemberAttribute's value.
/// </summary>
/// <typeparam name="TEnum">The type of enum.</typeparam>
/// <param name="value">The EnumMemberAttribute's value.</param>
/// <param name="ignoreCase">ignores the case when comparing values.</param>
/// <returns>TEnum.</returns>
/// <exception cref="ArgumentException">No XmlEnumAttribute code exists for type " + typeof(TEnum).ToString() + " corresponding to value of " + value</exception>
public static TEnum ToEnum <TEnum>(this string value, bool ignoreCase = true) where TEnum : struct, Enum
{
// Try to parse it normally on the first try
if (Enum.TryParse <TEnum>(value, ignoreCase, out var result))
{
return(result);
}
// Try with value from EnumMemberAttribute
if (EnumNameMapper <TEnum> .TryGetValue(value, ignoreCase, out result))
{
return(result);
}
throw new ArgumentException($"Value '{value}' is not a valid enum name of '{typeof(TEnum)}' ({nameof(ignoreCase)}={ignoreCase}). Valid values are: {string.Join(", ", EnumNameMapper<TEnum>.GetNames())}.");
}
/// <summary>
/// Gets the EnumMemberAttribute's value from the enum's value.
/// </summary>
/// <typeparam name="TEnum">The type of enum.</typeparam>
/// <param name="value">The enum's value.</param>
/// <returns>string.</returns>
public static string ToEnumMemberValue <TEnum>(this TEnum value) where TEnum : struct, Enum
{
return(EnumNameMapper <TEnum> .GetName(value));
}
public override void Write(Utf8JsonWriter writer, T value, JsonSerializerOptions options)
{
writer.WriteStringValue(EnumNameMapper <T> .GetName(value));
}