I have a Type but need help on creating generic Func

Question

I have an object myClassType of Type

string typeName = @"MyCompany.MyApp.MyDomain.MyClass"; Type myClassType = Type.GetType(typeName);

and I want to create a lambda expression (similar to the one below), but how do I get the MyClass from the myClassType so that I can pass it to the Func

Expression.Lambda<Func<MyClass, bool>>()

Is it possible to do so? any alternative ways or suggestions welcome.

so do you need an object from myClassType type definition? Then use Activator.CreateInstance(myClassType) and cast it to MyClass. Notice there is an inconsistency: you have one type defined in two different ways: in string and in usual way as Type parameter — Ilya Ivanov
– Ilya Ivanov, Commented Jun 12, 2014 at 23:38
Would the result from Activator.CreateInstance(myclassType) can be used in Func<????, bool> ? — Ash
– Ash, Commented Jun 13, 2014 at 0:03
I am not looking to create an instance object of that type, but to use that type myClassType to create a Func<**MyClass**, bool> — Ash
– Ash, Commented Jun 13, 2014 at 0:11
Are you wanting to create an Expression<Func<MyClass, bool>> or just a Func<MyClass, bool>? — Enigmativity
– Enigmativity, Commented Jun 13, 2014 at 1:46
Actually I want to create Expression.Lambda<Func<MyClass, bool>>(...) — Ash
– Ash, Commented Jun 13, 2014 at 4:13

Teter28 · Accepted Answer · 2015-01-13 11:55:45Z

1

Use

Expression.Lambda(...)

Non generic signature and treat the result as your known type.

answered Jan 13, 2015 at 11:55

Teter28

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