Hello everybody, I'm running umbraco 7.3 on several websites, now I need to add the alt text for every image since the previous developer build these templates without alt text and left me with this accessibility problems.

I took my time to search in the forum but didn't find any working solution for my case.

So I created an image property altText as a string in the media setting section.

Then I have a template file with this section for the slideshow

@if(CurrentPage.HasValue("lwStarterCartellaSlideshow"))
{
    var classe="active";
    var conta=0;
  <div id="carousel-top" class="carousel slide" data-ride="carousel">
    <ol class="carousel-indicators">
      @foreach(var item in Umbraco.TypedMedia(Int32.Parse(CurrentPage.GetPropertyValue("lwStarterCartellaSlideshow").ToString())).Children)
      {
      <li data-target="#carousel-top" data-slide-to="@conta" class="@classe"></li>
        if(classe=="active")
        {
         classe="";
        }   
        conta=conta+1;
      }
    </ol>
    <div class="carousel-inner" role="listbox">
    @{
        classe="active";
    }
      @foreach(var item in Umbraco.TypedMedia(Int32.Parse(CurrentPage.GetPropertyValue("lwStarterCartellaSlideshow").ToString())).Children)
      {
      <div class="item @classe">
        <img src="@item.Url" alt="">
      </div>
        if(classe=="active")
        {
         classe="";
        }   
      }
    </div>
    <a class="left carousel-control" href="#carousel-top" role="button" data-slide="prev">
      <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
      <span class="sr-only">Previous</span>
    </a>
    <a class="right carousel-control" href="#carousel-top" role="button" data-slide="next">
      <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
      <span class="sr-only">Next</span>
    </a>
  </div>    
}

I tried

alt="@item.GetPropertyValue("altText")"

But I only get a runtime error from the server

any help would be appreciated, sorry for bad english

Alessandro