ASP.NET MVC3 - problem handling multiple values from a strongly typed Listbox -

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I'm having trouble handling multiple values ​​from a strongly typed listbox I have an event class that has many technical Classes can be.

Here's my simplified event class: 

  Public class event {public id id {get; Set; } Public IEnumerable & lt; Technology & gt; Technologies (Received); Set; }}   
 I was using this  
  public list & lt; Technology & gt; Technologies (Received); Set; }   
 and  
 changed to ; Public iyimerable & lt; Technology & gt; Technologies (Received); Set; }   
 but still get the same error.  
 Here is a technical classroom, it is a very simple one.  
  Public category technology {Receive Public Entry ID; Set; } Public string description {get; Set; }}   
 Here's my simple administrator  
  generate public action () {var from TechnologyQry = d by db.Technology order d.Description new {D} .id, d. Description}; ViewBag.eventTechnology = New Multi Sealist (Technology Curie, "ID", "Details"); See Return (); }   
 and here is the visual section that provides the list box   prefix  @ html.ListBoxFor (model = & gt; model.Technologies, (MultiSelectList ViewBag.eventTechnology)   
 and I'm getting an error of thit  
 
 Key 'Technologies' has 'System'. Selection. List 1 1 [[stuff.Models.Technology, content, version = 1.0.0.0, culture = neutral, publicKeyToken = null]] 'but should be' IEnumerable 'type. /   
 Sorry, English is not my main language, I would appreciate any help I could get thank you.   
 
 
 What model have you defined in viewing the  @model ... ? 
 Besides, the Create method is not returning being used as / model for some if you want a list box called "Technologies" in the name attribute, you can use it instead:  
  @html Listbox (see "Technologies", (Multi Selectlist) Bag.EventTechnology)

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