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I need to use this enum in my C# application, but it won't let me use these values. When I specify the type as uint I can use the -1 value, and when I specify int I can't use the last 2 values. Is there a way to use the unchecked keyword here to allow me to define all of these values? These values are coming from an external source, so I can't change them.
internal enum MyValues : int
{
value1 = -1,
value2 = 0,
value3 = 0x80000000,
value4 = 0xFFFFFFFF
}
430
Enum types cannot be nullable.
Enum constants are implicitly static and final and you can not change their value once created. Enum in Java provides type-safety and can be used inside switch statements like int variables.
By default, the enum value is its method name. You can however override it, for example if you want to store enums as integers in a database, instead of using their method name. An enum value doesn't have to be a string, as you can see in the example.
You can add a new value to a column of data type enum using ALTER MODIFY command. If you want the existing value of enum, then you need to manually write the existing enum value at the time of adding a new value to column of data type enum.
If you want -1 to be a different value from 0xFFFFFFFF, you're going to need a datatype bigger than 32 bits. Try long.
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