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Home / Developer Network / Forums / Sitefinity Older Versions (3.x): Developing with Sitefinity > FilterExpression Multiple tags

• Brendan

  Posted on Feb 18, 2009 (permalink)

  I've seen the examples given on how to use the filterexpression with tags, for instance:
  
  Publication_Date <= "#now" AND Expiration_Date > "#now" AND Tag.Name = "mytag"
  
  I have this working well, but I'd like to be able to use the filterexpression on multiple tags, so that the items (news items in this case) returned by the filterexpression are all identified with each tag in the expression. I've tried using multiple "AND Tag.Name=" and introducing LIKE into the expression for tag.Name, but to no avail. Can this be done, and if so what is the proper syntax?
  
  Thanks.
  

  Reply

• Ivan Dimitrov Ivan Dimitrov

  Posted on Feb 19, 2009 (permalink)

  Hi Brendan,
  
  In this case filterexpression will not list the items that have been tagged. You should use the intersection approach.
  
  Here is a sample:
  
  

  string Tag1 = tag1;

  string Tag2 = tag2;

  NewsManager newsManager = new NewsManager("News");

  IList listOfAllNews = newsManager.Content.GetContent(0, 0, string.Empty, Tag1);

  IList listOfAllNews1 = newsManager.Content.GetContent(0, 0, string.Empty, Tag2);

  // here we are using intersection

  List<IContent> intersection = new List<IContent>();

  foreach (IContent c1 in listOfAllNews)

  {

  foreach (IContent c2 in listOfAllNews1)

  {

  if (c1.ID == c2.ID)

  {

  intersection.Add(c1);

  break;

  }

  // list the content titles here

  }

  }

  foreach (IContent item in intersection)

  {

  Response.Write(item.GetMetaData("Title"));

  }

  }

  #region properties

  public string Tag1

  {

  get { return this.tag1; }

  set { this.tag1 = value; }

  }

  public string Tag2

  {

  get { return this.tag2; }

  set { this.tag2 = value; }

  }

  #endregion properties

  #region private fileds

  private string tag1;

  private string tag2;

  # endregion private fileds

  
  
  Best wishes,
  Ivan Dimitrov
  the Telerik team

  
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