How to pass a generic enum to a method and set it to a dynamic object inside the method

Question

I have roughly 20+ enums that are all the same, but coming from different web service libraries, so when used they all need they're fully namespaced reference like this below

WebServices_Production_TrustOnline_ARM.yesnounspecified
WebServices_Development_TrustOnline_ARM.yesnounspecified
WebServices_Production_TrustOnline_BW.yesnounspecified
WebServices_Development_TrustOnline_BW.yesnounspecified
etc
etc up to 20+

Where each enum is like this below

public enum yesnounspecified
{
    unspecified,
    yes,
    no,
}

In my method I set all the values of a dynamic object, also from each of the different web services and I need to be able to set the enum to (yes/no) but not sure how to pass it in and use it

ex.

MyMethod("something", new WebServices_Production_TrustOnline_ARM.objectToFill());


public void MyMethod(string otherParam, dynamic someObject) {

    // 'cigarettes' is a 'yesnospecified' enum
    someObject.cigarettes = // need to set the enum value (yes/no) here but not sure how to pass it in and set it

}

Do they all have the same integer values? (yesnounspecified)(int)x; — Jeremy Lakeman
– Jeremy Lakeman, Commented Dec 24, 2019 at 2:38
yes, I believe so as none of them actually specify any int values. They are in the web service file just as I have shown in my example, with just the names, no int values specified — chuckd
– chuckd, Commented Dec 24, 2019 at 2:41
@user1186050 you want to set someObject.cigarettes = yes/no from Enum ...right? correct me if am wrong — Saif
– Saif, Commented Dec 24, 2019 at 2:49

Klaus Gütter · Accepted Answer · 2019-12-24 08:05:21Z

1

Using reflection

public void MyMethod(string otherParam, object someObject) 
{
    var prop = someObject.GetType().GetProperty("cigarettes");
    var enumType = prop.PropertyType;
    prop.SetValue(someObject, Enum.Parse(enumType, "yes"), null);
}

This gets the information about the "cigarettes" property using reflection, including the enum type. Enum.Parse(enumType, string) or Enum.ToObject(enumType, intValue) can then be used to construct a value of this type. SetValue writes the constructed value to the property.

Using generics

An alternative - if the value is fixed - would be to make the method generic and pass the enum value to the method:

public void MyMethod<T>(string otherParam, dynamic someObject, T value) 
{
    someObject.cigarettes = value;
}

Call: MyMethod("x", obj, yesnounspecified.yes);

edited Dec 24, 2019 at 8:05

answered Dec 24, 2019 at 7:44

Klaus Gütter

12.2k7 gold badges35 silver badges43 bronze badges

Sign up to request clarification or add additional context in comments.

9 Comments

chuckd Over a year ago

And this will actually extract the enum from the dynamic object? So that I can use it?

Klaus Gütter Over a year ago

Yes, it will do. Performance will not be the best, so if you call this method very often it would be better to write 20+ variants of it.

chuckd Over a year ago

no it only gets called a couple times a week, but wouldn't be eaier to just pass in some kind of generic? I'm not that experienced with generics but it seems like that would be the best solution, but I don't know how it would be done!

chuckd Over a year ago

like what if I pass it in as a dynamic?

Klaus Gütter Over a year ago

Added an alternative to my answer.

|

Collectives™ on Stack Overflow

How to pass a generic enum to a method and set it to a dynamic object inside the method

1 Answer 1

9 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

9 Comments

Your Answer

Sign up or log in

Post as a guest

Related