Cast Int to Generic Enum in C#

Question

Similar to Cast int to enum in C# but my enum is a Generic Type parameter. What is the best way to handle this?

Example:

private T ConvertEnum<T>(int i) where T : struct, IConvertible {     return (T)i; } 

Generates compiler error Cannot convert type 'int' to 'T'

Full code is as follows, where value can contain the int, or null.

private int? TryParseInt(string value) {     var i = 0;     if (!int.TryParse(value, out i))     {         return null;     }     return i; }  private T? TryParseEnum<T>(string value) where T : struct, IConvertible {     var i = TryParseInt(value);     if (!i.HasValue)     {         return null;     }      return (T)i.Value; } 

Answer 1

The simplest way I have found is to force the compiler's hand by adding a cast to object.

return (T)(object)i.Value; 

Answer 2

You should be able to use Enum.Parse for this:

return (T)Enum.Parse(typeof(T), i.Value.ToString(), true); 

This article talks about parsing generic enums for extenstion methods:

• Generic Enum Parsing with Extension Methods