c# - How do I check if a given value is a generic list?

Question

public bool IsList(object value)
    {
        Type type = value.GetType();
        // Check if type is a generic list of any type
    }

What's the best way to check if the given object is a list, or can be cast to a list?

Answer 1

For you guys that enjoy the use of extension methods:

public static bool IsGenericList(this object o)
{
    var oType = o.GetType();
    return (oType.IsGenericType && (oType.GetGenericTypeDefinition() == typeof(List<>)));
}

So, we could do:

if(o.IsGenericList())
{
 //...
}