System.Dynamic.Utils.TypeUtils.HasIdentityPrimitiveOrNullableConversionTo C# (CSharp) Method

        public static bool HasIdentityPrimitiveOrNullableConversionTo(this Type source, Type dest)
        {
            Debug.Assert(source != null && dest != null);

            // Identity conversion
            if (AreEquivalent(source, dest))
            {
                return true;
            }

            // Nullable conversions
            if (IsNullableType(source) && AreEquivalent(dest, GetNonNullableType(source)))
            {
                return true;
            }
            if (IsNullableType(dest) && AreEquivalent(source, GetNonNullableType(dest)))
            {
                return true;
            }
            // Primitive runtime conversions
            // All conversions amongst enum, bool, char, integer and float types
            // (and their corresponding nullable types) are legal except for
            // nonbool==>bool and nonbool==>bool?
            // Since we have already covered bool==>bool, bool==>bool?, etc, above,
            // we can just disallow having a bool or bool? destination type here.
            if (IsConvertible(source) && IsConvertible(dest) && GetNonNullableType(dest) != typeof(bool))
            {
                return true;
            }
            return false;
        }