IUnityContainer.Resolve<T> throws error claiming it cannot be used with type parameters

Yesterday I've implemented the code:

CustomerProductManager productsManager = container.Resolve<CustomerProductManager>();

It was compilable and working.

Today (probably I've modified something) I am constantly getting the error:

The non-generic method 'Microsoft.Practices.Unity.IUnityContainer.Resolve(System.Type, string, params Microsoft.Practices.Unity.ResolverOverride[])' cannot be used with type arguments

My collegue has the same source code and doesn't have same error. Why? How to resolve the problem?

P.S.

line "using Microsoft.Practices.Unity;" is present in usings section.

I've tried to replace generic version with non-generic one:

CustomerProductManager productsManager = (CustomerProductManager)container.Resolve(typeof(CustomerProductManager));

And got another error:

No overload for method 'Resolve' takes '1' arguments

It seems like one of the assemblies is not referenced.. but which one? I have 2 of them referenced: 1. Microsoft.Practices.Unity.dll 2. Microsoft.Practices.ServiceLocation.dll

P.P.S. I've saw similar problem http://unity.codeplex.com/WorkItem/View.aspx?WorkItemId=8205 but it is resolved as "not a bug"

Any thought will be helpful

40100 次浏览
小开

I had the same problem and found the "fix" looking at Prism sample code files. Looks like, even if it is not a dll in Unity V2 you have to add a reference in your class to: Microsoft.Practices.Unity

my complete "using" section is as follow

using System;
using System.Windows;
using Microsoft.Practices.Composite.Modularity;
using Microsoft.Practices.Unity;
using Microsoft.Practices.Composite.UnityExtensions;

I'm not sure if you are using Silverlight, but the generic version for Container.Resolve IS in Microsoft.Practices.Unity.

小开

In my situation the class I was wrapping with Unity inherited from an abstract base class, and that base class did NOT have a parameterless constructor. Once I changed my code to use a parameterless constructor for the base class, the problem disappeared.

小开

I faced this problem and none of this answers did not help me. I was getting the compile time error

Unknown method RegisterType() of Microsoft.Practices.Unity.IUnityContainer

for my below code.

Container.RegisterType<IMyInterface, MyClass>();

I found that if you did not implement IMyInterface to the class MyClass, you get this issue. Hope it resolves for you too...

小开

In my situation, I had Bootstrapper implement its own Resolve without the generic version, so it couldn't find the Microsoft's Unity Resolve. Adding the proper usings did the trick.

小开

Microsoft no longer owns Unity and it's in version 5, the namespace is now: 

using Unity;

Ensure that is in your using section when using:

container.Resolve<T>();

提交答案