Tips for managing a controller response that delivers a file within ASP.NET MVC

Question

Tips for managing a controller response that delivers a file within ASP.NET MVC

I am utilizing a controller to return a file in the following manner:

byte[] fileBytes=System.IO.File.ReadAllBytes(Path.Combine(Server.MapPath("~/Images/"), photoPath));
            string fileName = prop;
            return File(fileBytes, System.Net.Mime.MediaTypeNames.Application.Octet, fileName);

To display this file as an HTML image, I use the code below:

<div class="col-md-6"><img src="@("File/Download?id="+ Model.ID+"&prop=photo")" alt="Image" /></div>

My goal is to create a clickable link using the same controller. When the user clicks on it, the image should be displayed like so:

    <div class="col-md-4"><a @(Model.path == null ? Html.ActionLink("click here", "Download", "File", new { appid = Model.ID.ToString(), prop = "photo" }, null) : Html.ActionLink("none", "", ""))</a></div>

html css asp.net asp.net-mvc razor

Answer 1

Answer №1

Using the Html.ActionLink helper method will automatically create the necessary HTML code for an anchor tag. It's unnecessary to place it within an opening a tag.

An easy solution is to use a simple If statement.

<div class="col-md-4">
  @if(Model.path == null)
  {
      @Html.ActionLink("click here", "Download", "File", 
                                     new { appid = Model.ID, prop = "photo" }, null); 
  }
  else
  {
    <span>There is nothing to download or you can add another link here</span>
  }
</div>

Answer 2

Using the Html.ActionLink helper method will automatically create the necessary HTML code for an anchor tag. It's unnecessary to place it within an opening a tag.

An easy solution is to use a simple If statement.

<div class="col-md-4">
  @if(Model.path == null)
  {
      @Html.ActionLink("click here", "Download", "File", 
                                     new { appid = Model.ID, prop = "photo" }, null); 
  }
  else
  {
    <span>There is nothing to download or you can add another link here</span>
  }
</div>

Tips for managing a controller response that delivers a file within ASP.NET MVC

Answer №1

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