C#•2y ago

✅ Get property from generic type?

I have a method with a generic type. Two objects of different classes may be passed to it. How do I access a property in these objects (it has the same name in both objs)? Been trying with reflection but I'm getting a Object reference not set to an instance of an object. C# GetProperty()

12 Replies

Angius•2y ago

Do those objects share an interface? If not, then that's how it should be solved

scacOP•2y ago

I can't touch these objects. They do share an interface but that interface does not implement the property I'm interested in.

Angius•2y ago

I guess you could use pattern matching You want to get the value of that property, right?

scacOP•2y ago

yes it's a bool

Angius•2y ago

var val = obj switch {
    SomeClass sc => sc.Prop,
    SomeOtherClass soc => soc.Prop,
    _ => false
};

var val = obj switch {
    SomeClass sc => sc.Prop,
    SomeOtherClass soc => soc.Prop,
    _ => false
};

scacOP•2y ago

let's see also, why does this not work for me? typeof(T).GetProperty(parameter).GetValue(currentItem); I've tried similar stuff.

Angius•2y ago

¯\_(ツ)_/¯

scacOP•2y ago

https://stackoverflow.com/questions/14129421/get-property-of-generic-class

Stack Overflow

Get property of generic class

I have a generic class, and an object value where obj.GetType().GetGenericTypeDefinition() == typeof(Foo<>). class Foo<T> { public List<T> Items { get; set; } } How do I get...

scacOP•2y ago

thank you, this is useful

Anton•2y ago

you need BindingFlags

scacOP•2y ago

I will look into that

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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✅ Get property from generic type?