looping through a folder using razor

Martin Kure

Posted on 27/01/2015 15:23:28

Hi,

I'm trying to build a gallery using items and razor. I have created an item, which so far only contains one field of the type "folder".

The idea is to grab the folder-name and then somehow loop through the images within the specified folder. The problems is, that the item field outputs a string with the given folder location. Right now I don't know how I can use the folder name to retrieve all the images within in.

I was hoping to be able to do something like this:

       var item = GetValue("Item.Mappe.Value");

       foreach(var slide in GetLoop("Item.Mappe")){
...
       }
   }

This won't work. But is there a way to retrieve the images/files in a folder using razor?

Thanks in advance.

/Martin

Replies

Imar Spaanjaars

Posted on 27/01/2015 15:32:56

Hi Martin,

You can use Server.MapPath to convert the folder to a physical path on disk, and then use System.IO.Directory.GetFiles to get all the files in that folder. Would that work? That uses .NET functionality directly; I am not sure there's a DW way to do it.

Imar

Martin Kure

Posted on 27/01/2015 15:49:50

Hi Imar,

thank you for feedback, would you care to elaborate on your solution - perhaps with a demo?

It seems interesting, but am not able to make it work though.

BR

Martin

Imar Spaanjaars

Posted on 27/01/2015 15:53:30

Can you post what you have tried to far?

Mikkel Ricky

Posted on 27/01/2015 16:00:41

This post has been marked as an answer

Martin, the Folder item field renders a loop of files in the selected folder.

@TemplateTags("Mappe")

will reveal that you have a loop called Item.Mappe.ListOfFiles which you can use to render all the files

@foreach (var file in GetLoop("Item.Mappe.ListOfFiles")) {
  <pre>@file.TemplateTags()</pre>
}

The list of files is filtered using the "Search pattern" setting on the Folder field, cf. http://manual.dynamicweb-cms.com/Default.aspx?ID=7592#31798.

Best regards,
Mikkel

Votes for this answer: 1

Imar Spaanjaars

Posted on 27/01/2015 16:20:21

Nice! Much better than my .NET solution which, BTW, could look like this:

@{
  string folder = GetString("Item.Images");
  string folderOnDisk = System.Web.HttpContext.Current.Server.MapPath(folder);
  var directoryInfo = new System.IO.DirectoryInfo(folderOnDisk);
  foreach (var fileInfo in directoryInfo.GetFiles("*.jpg")){
    <img src="@(string.Format("{0}/{1}", folder,  fileInfo.Name))" />
  }
}

Martin Kure

Posted on 28/01/2015 08:04:43

Perfect, thank you both very much for helping me out.

BR

Martin

Martin Kure

Posted on 28/01/2015 09:28:17

Hmm,

I must be missing something. Mikkels code works flawlessly. However, when I use the templatetag within the loop, I can see a field called 'Item.Mappe.Filename',, which provides the path of the image within the folder. But when I'm using it in my template, I get an error. I'm using it this way:

   @{

       foreach(var file in GetLoop("Item.Mappe.ListOfFiles")){
@file.TemplateTags()
<p>@file.GetValue('Item.Mappe.FileName')</p>

       }
   }

However, I'm getting this error:

Line 9: Too many characters in character literal

Am I making an error?

BR

Martin

Morten Bengtson

Posted on 28/01/2015 13:04:43

Hi Martin,

When you get error messages in Razor templates, try to google it. Most often the error is not Dynamicweb specific, but a .NET error (C# / VB).

In this case you have used single quotes around the string in GetValue, which is not valid in C#. Single quotes are used for single characters, not strings. In HTML and JavaScript you can use one or the other interchangeably, but C# is more strict.

Try this inside your loop...

<p>@file.GetValue("Item.Mappe.FileName")</p>

Martin Kure

Posted on 28/01/2015 13:13:03

Thank you, Morten. I knew, I was doing something in a not-c#-way :-).

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looping through a folder using razor

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