public static Type[] GetElementTypes(Type enumerableType, IEnumerable enumerable,
ElementTypeFlags flags = ElementTypeFlags.None)
{
if (enumerableType.HasElementType)
{
return(new[] { enumerableType.GetElementType() });
}
var idictionaryType = enumerableType.GetDictionaryType();
if (idictionaryType != null && flags.HasFlag(ElementTypeFlags.BreakKeyValuePair))
{
return(idictionaryType.GetTypeInfo().GenericTypeArguments);
}
var ienumerableType = enumerableType.GetIEnumerableType();
if (ienumerableType != null)
{
return(ienumerableType.GetTypeInfo().GenericTypeArguments);
}
if (typeof(IEnumerable).IsAssignableFrom(enumerableType))
{
var first = enumerable?.Cast <object>().FirstOrDefault();
return(new[] { first?.GetType() ?? typeof(object) });
}
throw new ArgumentException($"Unable to find the element type for type '{enumerableType}'.",
nameof(enumerableType));
}
public static Type[] GetElementTypes(Type enumerableType, IEnumerable enumerable,
ElementTypeFlags flags = ElementTypeFlags.None)
{
if (enumerableType.HasElementType)
{
return new[] {enumerableType.GetElementType()};
}
Type idictionaryType = enumerableType.GetDictionaryType();
if (idictionaryType != null && flags.HasFlag(ElementTypeFlags.BreakKeyValuePair))
{
return idictionaryType.GetTypeInfo().GenericTypeArguments;
}
Type ienumerableType = enumerableType.GetIEnumerableType();
if (ienumerableType != null)
{
return ienumerableType.GetTypeInfo().GenericTypeArguments;
}
if (typeof(IEnumerable).IsAssignableFrom(enumerableType))
{
var first = enumerable?.Cast<object>().FirstOrDefault();
return new[] {first?.GetType() ?? typeof(object)};
}
throw new ArgumentException($"Unable to find the element type for type '{enumerableType}'.",
nameof(enumerableType));
}
