How do I get a value of a reference type in an Expression?
- by Jon Kruger
I have this method:
public void DoSomething<T>(Expression<Func<T, object>> method)
{
}
If this method is called like this:
DoSomething(c => c.SomeMethod(new TestObject()));
... how do I get the value of the parameter that was passed into SomeMethod()?
If the parameter is a value type, this works:
var methodCall = (MethodCallExpression)method.Body;
var parameterValue = ((ConstantExpression)methodCall.Arguments[0]).Value;
However, when I pass in a reference type, methodCall.Arguments[0] is a MemberExpression, and I can't seem to figure out how to write code to get the value out of it.
