I’ve updated this little utility library by\u00a0simplifying some method overloads plus added a static method for getting escaped html special characters.<\/p>\n
To make the code more maintainable for the special characters (like adding new ones in the future) I’ve added an enum that use some .Net ‘attributes’ so you can see, use and reference everything about these ‘things’ in one place. To do that I had to add a special helper class so the enum can carry some additional properties (like the actual strings for the special character and the escaped string). To do this I created a custom attribute class called ‘StringValueAttribute’ like this:<\/p>\n
public class<\/span> StringValueAttribute : Attribute<\/span>
\n{<\/p>\npublic string<\/span> StringExpandedValue;
\npublic string<\/span> StringValue;<\/p>\npublic<\/span> StringValueAttribute(string<\/span> value, string<\/span> stringExpandedValue)
\n{<\/p>\nthis<\/span>.StringValue = value;
\nthis<\/span>.StringExpandedValue = stringExpandedValue;<\/p>\n}<\/p>\n
}<\/p><\/blockquote>\n
To retrieve the associated values from an enum another static helper class is needed:\u00a0StringValueAttributeUtil<\/p>\n
internal static class<\/span> StringValueAttributeUtil
\n{<\/p>\npublic static string<\/span> GetStringValue(Enum<\/span> value)
\n{<\/p>\n\/\/ Get the type
\nType<\/span> type = value.GetType();<\/p>\n\/\/ Get fieldinfo for this type
\nSystem.Reflection.FieldInfo<\/span> fieldInfo = type.GetField(value.ToString());
\n\/\/ Get the stringvalue attributes
\nStringValueAttribute<\/span>[] attribs = fieldInfo.GetCustomAttributes(
\ntypeof(StringValueAttribute<\/span>), false<\/span>) as StringValueAttribute<\/span>[];
\n\/\/ Return the first if there was a match.
\nreturn<\/span> attribs.Length > 0 ? attribs[0].StringValue : null<\/span>;<\/p>\n}
\npublic static string<\/span> GetStringExpandedValue(Enum<\/span> value)
\n{<\/p>\n\/\/ Get the type
\nType<\/span> type = value.GetType();<\/p>\n\/\/ Get fieldinfo for this type
\nSystem.Reflection.FieldInfo<\/span> fieldInfo = type.GetField(value.ToString());
\n\/\/ Get the stringvalue attributes
\nStringValueAttribute<\/span>[] attribs = fieldInfo.GetCustomAttributes(
\ntypeof(StringValueAttribute<\/span>), false<\/span>) as StringValueAttribute<\/span>[];
\n\/\/ Return the first if there was a match.
\nreturn<\/span> attribs.Length > 0 ? attribs[0].StringExpandedValue : null<\/span>;<\/p>\n}<\/p>\n
}<\/p><\/blockquote>\n
<\/p>\n
Then to actually make use of this helper class you decorate the enum like this: (showing only part of it…)<\/p>\n
public enum<\/span> HTMLSpecialCharacter
\n{<\/p>\n[StringValue<\/span>(“<“, “&lt;”)]
\nLessThanSign,
\n[StringValue<\/span>(“>”, “&gt;”)]
\nGreaterThanSign,
\n[StringValue<\/span>(“\\””, “&quot;”)]
\nDoubleQuote,
\n[StringValue<\/span>(“‘”, “&#39;”)]
\nSingleQuote,<\/p>\n…<\/p>\n
}<\/p><\/blockquote>\n
Happy HTML’ing \ud83d\ude42<\/p>\n