C# enum default value null

If the parsed value is not equivalent to one of the Enum values, you could return a null and then check for null every where in the code before using this Enum.

Consider we are building a console application and asking user to input one the direction and then trying to convert it into one of our Enum with following function. This is absolutely fine piece of code, which will return you correct Enum value otherwise it will return null. View all posts by Naveed.

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This site uses Akismet to reduce spam. Learn how your comment data is processed. Memory is blanked by the runtime before you get it, enums are structs remember — ShuggyCoUk. DougS 1. No, but admitting you were wrong is. He didn't earn any reputation from comment upvotes.

The comments made me suspicious about this answer, so I tested it and verified that this answer definitely is correct. Additional information: Object reference not set to an instance of an object. How to fix it? Note: I use an extension method in order to display enum's Descriptions, but not sure how to avoid the error in the helper method GetDescription defined on this page — Jack.

Emperor XLII Print o. ToString ; Note: you will need to include the following line at the top of the file: using System. ComponentModel; This does not change the actual C language default value of the enum, but gives a way to indicate and get the desired default value.

Can you add more info? What version of. I'd like to recommend you to change the last line in the else statement as follows: return default TEnum ;. Fist, it will reduce the slower Enum. Besides, you do not restrict the code to be used for enums only, so this will actually fix potential exceptions when used over non-enum types. This may be a misuse of the default value attribute in the context of the question asked.

The question asked is about the automatically initialized value, which won't change with the proposed solution. This attribute is meant for a visual designer's default differing from the initial value.

There is no mention by the person asking the question of visual designer. As the accepted answer states. The short answer is "no, its impossible" to redefine the default value of an enum to something other than the 0 value. This answer is a workaround. Joe Joe Strictly, there doesn't even need to be an enumeration with this value. Zero is still the default. One more way that might be helpful - to use some kind of "alias".

Default to specify default status in your code. Dmitry Pavlov Dmitry Pavlov The suggestion is good, however, as mentioned already in other answers, enumerations have their default value to be zero. The latter is valid to write directly, as enums can be cast to integers, but it will fail during deserialization, as the framework makes sure that an enum is always deserialized to a valid member. I would personally avoid not setting enum members explicitly.

You can't, but if you want, you can do some trick. ContainsKey val return dict[val]; return val. GetFields BindingFlags. Public BindingFlags. Add Orientation fields.

GetValue null. Avram Avram 4, 29 29 silver badges 40 40 bronze badges. Also, make the constructor private. Good approach. Animals animal;.

Meneer Venus 1, 2 2 gold badges 12 12 silver badges 28 28 bronze badges. Cian Cian 1 1 silver badge 1 1 bronze badge. However, in that case "Pony" IS "Cat" e. WriteLine Animals. Pony ; prints "Cat" — James Curran. But all the answers related to nullable is perfect. On page load I initiallize the class and try to default the values to null. Here is the scenario Code is in C :. Then using the suggestions below I changed the above code to make it work with get and set methods.

Or use the standard practice for enums that cannot be null by having the FIRST value in the enum aka 0 be the default value. For example in a case of color None. The enum is a set of int values.