c# - Unity CS0308 Error -

i have started building apps using wpf , unity great source implementing mvvm architecture. have followed identical , reviewed source code have used , identical. have created class containerhelper class:

private static iunitycontainer _container;         static containerhelper()         {             _container = new unitycontainer();             _container.registertype<iemployeesrepository, employeesrepository>(                 new containercontrolledlifetimemanager());         }          public static iunitycontainer container         {             { return _container; }         } 

and have create class employeelistviewmodel:

private iemployeesrepository _repo;

public employeelistviewmodel(iemployeesrepository repo) {     _repo = repo;     editemployeecommand = new relaycommand<employees>(oneditemployee);     addemployeecommand = new relaycommand(onaddemployee);     clearsearchcommand = new relaycommand(onclearsearch); }  private string _searchinput;  public string searchinput {     { return _searchinput; }     set     {         setproperty(ref _searchinput, value);         filteremployee(_searchinput);     } }  private void filteremployee(string searchinput) {     if (string.isnullorwhitespace(searchinput))     {         employees = new observablecollection<employees>(_allemployees);     }     else     {         employees = new observablecollection<employees>(_allemployees.where(e => e.fullname.tolower().contains(searchinput.tolower())));     } }  private void onclearsearch() {     searchinput = null; }  private void oneditemployee(employees emp) {     editemployeerequest(emp); }  private void onaddemployee() {     addemployeerequested(new employees { id = guid.newguid() }); }  public event action<employees> addemployeerequested = delegate { }; public event action<employees> editemployeerequest = delegate { };  private observablecollection<employees> _employees; public observablecollection<employees> employees {     { return _employees; }     set { setproperty(ref _employees, value); } }  private list<employees> _allemployees; public async void loademplooyees() {     _allemployees = await _repo.getemployeesasync();     employees = new observablecollection<employees>(_allemployees); }  public relaycommand<employees> editemployeecommand { get; private set; } public relaycommand addemployeecommand { get; private set; } public relaycommand clearsearchcommand { get; private set; } 

}

and line of code implementing , passing employeelistviewmodel using containerhelper class:

private employeelistviewmodel _employeelistviewmodel;  _employeelistviewmodel = containerhelper.container.resolve<employeelistviewmodel>(); 

i don't understand why getting non-generic method error using iunitycontainer.resolve(type, sring, params resolveroverride[]) cannot used type arguments.

i understand more error , can fix it...i have looked in various places find answer.

add following using directive @ top of code file calling generic resolve method:

using microsoft.practices.unity;