@Enterprise Library Unity, How to inject to the List Property

Question

The follows is my code snippet, and I want to deliver the List parameter to my construct.

public class  MyClass

{

    public MyClass(List<string> parmList)
    {
         this.MyList=parmList;
    }

    public List<string> MyList
    {
        get;set;
    }


}

The config:

  <alias alias="List" type="System.Collections.Generic.List[[System.String, 

   mscorlib],mscorlib]"/>


  <register>


     <constructor>
        <param name="paraList" type="List" />
     </constructor>

  </register>

But when I resolve request to the container it throw out the exception:

The type List`1 has multiple constructors of length 1. Unable to disambiguate.

Is there any configuration error?

Not sure if this is just an issue with how you pasted your code into SO, but in your code the parameter name is parmList and in your config its: paraList... — BFree

Ethan Cabiac Ethan Cabiac · Accepted Answer · 2011-06-02T04:17:33

In order to resolve an instance of MyClass, Unity must Resolve an instance of List<string> to pass to your constructor - but it is unable to choose among the available constructors for List<string>. Here is some information on telling Unity which constructors to use when initializing a class.

@Enterprise Library Unity, How to inject to the List Property

1 Answers