Type.GetEnumUnderlyingType() replacement for .net35

Question

我正在寻找一种复制.net35中缺少的Type.GetEnumUnderlyingType()功能的方法。

Answer 1

Just use Enum.GetUnderlyingType instead:

Returns the underlying type of the specified enumeration.

Answer 2

Here's the implementation for GetEnumUnderlyingType from Type :

public virtual Type GetEnumUnderlyingType()
{
    if (!this.IsEnum)
        throw new ArgumentException(
            Environment.GetResourceString("Arg_MustBeEnum"), "enumType");
    FieldInfo[] fields = this.GetFields(
        BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
    if (fields == null || fields.Length != 1)
        throw new ArgumentException(
            Environment.GetResourceString("Argument_InvalidEnum"), "enumType");
    return fields[0].FieldType;
}