c# - HttpPostedFileBase always null when using a custom Html Helper -

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I have created an HTML Assistant for the file (for file and file): 

  Public Static IHtmlString File (This HtmlHelper HTML, String Text, String Name, IDictionary & lt; String, Object & gt; Attributes) {// Code Snap TagBolder input = New Tag Creator ("Input"); Input. Merge author ("type", "file"); Input.MergeAttribute ("name", name, true); Input.GenerateId (name); Tmedell, expression (tmp), url string text), text, tap); }   
 Everything is not fine unless I have the following model:  
  public class AdvertViewNewModel: ViewModel {public AdvertModel Advert {get; Set; } Public Class AdModel {Public HTTP Postfilebase Image {Receive; Set; } The name of the public string {get; Set; }}}   
 The problem is that in this case, ASP provides the .NET input as follows:  
    
 And my HTML Helper provides it in this form:  
   
  UPDATE   
  
    
 Code for my file:  
  public static IHtml string file    
 
 
 change  
  metadata. Display name Metadata Property name ?? Field   
 To  
  metadata.PropertyName   
 I think it's picking DisplayName instead of PropertyName

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