[ACCEPTED]-How to get base class's generic type parameter?-reflection
Accepted answer
I assume that your code is just a sample 6 and you don't explicitly know DerivedClass.
var type = GetSomeType();
var innerType = type.BaseType.GetGenericArguments()[0];
Note that 5 this code can fail very easily at run time 4 you should verify if type you handle is 3 what you expect it to be:
if(type.BaseType.IsGenericType
&& type.BaseType.GetGenericTypeDefinition() == typeof(BaseClass<>))
Also there can 2 be deeper inheritance tree so some loop 1 with above condition would be required.
You can use the BaseType property. The following 3 code would be resilient for changes in the 2 inheritance (e.g. if you add another class 1 in the middle):
Type GetBaseType(Type type)
{
while (type.BaseType != null)
{
type = type.BaseType;
if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(BaseClass<>))
{
return type.GetGenericArguments()[0];
}
}
throw new InvalidOperationException("Base type was not found");
}
// to use:
GetBaseType(typeof(DerivedClass))
var derivedType = typeof(DerivedClass);
var baseClass = derivedType.BaseType;
var genericType = baseClass.GetGenericArguments()[0];
0
It think this should work:
var firstGenericArgumentType = typeof(DerivedClass).BaseType.GetGenericArguments().FirstOrDefault();
Or
var someObject = new DerivedClass();
var firstGenericArgumentType = someObject.GetType().BaseType.GetGenericArguments().FirstOrDefault();
0
Source:
stackoverflow.com
More Related questions
Cookie Warning
We use cookies to improve the performance of the site. By staying on our site, you agree to the terms of use of cookies.