c# - Auto mapper does not work. -

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After

I used in my method but it does not work. Please help me improve it. 

  public virtual IEnumerable & lt; TViewModel & gt; FindAllByCriteria (

Error message: 

  Missing type map configuration or unsupported mapping. Mapping Type: Tag - & gt; Tagview model where Blogs Model Tag - & gt; Jahan.Blog.ViewModel.TagViewModel Destination Path: List` 1 [0] Source Price: System.Data.Entity.DynamicProxies.Tag_F1F5C39705DF9507B542CCC1A519D0757945F8E00B19F4F20C89F81DF8358563 
 
  
 
 
 You must first configure the map:  
  Mapper.CreateMap & LT; Tag, TagViewModel & gt; ();  
 
 Then you can map this way: 
 
  on destination_VMList = Mapper.Map & LT; IEnumerable & LT; TModel & gt;, IEnumerable & LT; TViewModel & gt; & Gt; (Source_tModelList);

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