Get private Properties/Method of base-class with reflection

Question

With Type.GetProperties() you can retrieve all properties of your current class and the public properties of the base-class. Is it somehow possible to get the private properties of the base-class too?

class Base
{
    private string Foo { get; set; }
}

class Sub : Base
{
    private string Bar { get; set; }
}

Sub s = new Sub();
PropertyInfo[] pinfos = s.GetType().GetProperties(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static);
foreach (PropertyInfo p in pinfos)
{
    Console.WriteLine(p.Name);
}
Console.ReadKey();

This will only print "Bar" because "Foo" is in the base-class and private.

score 56 · Accepted Answer · edited Aug 17 '21 at 15:23

56

To get all properties (public/private/protected/internal/static/instance) of a given Type someType, you must access the base class by using someType.BaseType.

Example:

PropertyInfo[] props = someType.BaseType.GetProperties(
        BindingFlags.NonPublic | BindingFlags.Public
        | BindingFlags.Instance | BindingFlags.Static)

edited Aug 17 '21 at 15:23

harvzor

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answered Feb 15 '10 at 16:25

Marc Gravell

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266
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7

In addition, it is possible to iterate through the base types (type = type.BaseType), until type.BaseType is null, to get a complete picture. – Eric Mickelsen Feb 15 '10 at 16:28
4

unfortunately this does not work for private properties of the base class. only for inherited public and protected – Fabiano Feb 15 '10 at 16:42
@Fabiano - nonpublic includes private. – Marc Gravell Feb 15 '10 at 16:56
@Marc Gravell it seems that this only includes privates of the subclass but not of the baseclass. See additional information at the question – Fabiano Feb 15 '10 at 17:16
7

@Fabiano You need to call GetProperties() off of s.GetType().BaseType, not off of just GetType(). – Andy Feb 15 '10 at 17:24
2

ok, so it seems you can't get all properties at once but have to check all basetypes by hand. But this will do it. Thanks – Fabiano Feb 15 '10 at 17:28
1

Why I have to call BaseType in case of private properties? – honzakuzel1989 Aug 12 '16 at 11:59
@honzakuzel1989 because the question here is "of base class", meaning it is the `BaseType` that declares them – Marc Gravell Aug 12 '16 at 12:15

score 5 · Answer 2 · answered Mar 24 '16 at 13:35

Iterate through the base types (type = type.BaseType), until type.BaseType is null.

MethodInfo mI = null;
Type baseType = someObject.GetType();
while (mI == null)
{
    mI = baseType.GetMethod("SomePrivateMethod", BindingFlags.NonPublic | BindingFlags.Instance);
    baseType = baseType.BaseType;
    if (baseType == null) break;
}
mI.Invoke(someObject, new object[] {});

Get private Properties/Method of base-class with reflection

2 Answers2

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