Hi there,

I have a document type including some images fields both direct uploader and image selection. I have successfully showed the image in transformation using the code below.

 <tr>
    <td>Direct Uploader :</td>
    <td><%# IfEmpty(Eval("ArticleImage"), "", GetImage("ArticleImage")) %></td>
  </tr>
  <tr>
    <td>Direct Uploader (resized):</td>
    <td><%# IfEmpty(Eval("ArticleImage"), "", GetImage("ArticleImage", 160, 160, 120, Eval("ArticleTitle"))) %></td>
  </tr>
  <tr>
    <td>Image Selection :</td>
    <td><%# IfEmpty(GetDocumentUrl("test",""), "", GetImageByUrl(GetDocumentUrl("test","")))%></td>
  </tr>
  <tr>
    <td>Image Selection (resized):</td>
    <td><%# IfEmpty(GetDocumentUrl("test",""), "", GetImageByUrl(GetDocumentUrl("test",""), 100, 100, 100, Eval("ArticleTitle")))%></td>
  </tr>

Now but i am looking for show document type data in custom webpart. I am using .net repeater to render the data.

However, I got the error message, The name 'IfEmpty' does not exist in the current context, which I realized those functions are only available in CMSAbstractTransformation.

What do I suppose to do to render document type images (both direct uploader and file selection fields) in custom webpart?


The ascx file

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="FeatureArticles.ascx.cs"
    Inherits="CMSWebParts_RealInsurance_Common_LearningCentre_FeatureArticles" %>
<%@ Import Namespace="CMS.WorkflowEngine" %>
<h2>
    FeatureArticle</h2>
<table>
    <asp:Repeater runat="server" ID="rprFeatureArticle">
        <ItemTemplate>
            <tr>
                <td>
                    Direct Uploader :
                </td>
                <td>
                    <%# IfEmpty(Eval("ArticleImage"), "", GetImage("ArticleImage")) %>
                </td>
            </tr>
            <tr>
                <td>
                    Direct Uploader (resized):
                </td>
                <td>
                    <%# IfEmpty(Eval("ArticleImage"), "", GetImage("ArticleImage", 160, 160, 120, Eval("ArticleTitle"))) %>
                </td>
            </tr>
            <tr>
                <td>
                    Image Selection :
                </td>
                <td>
                    <%# IfEmpty(GetDocumentUrl("test",""), "", GetImageByUrl(GetDocumentUrl("test","")))%>
                </td>
            </tr>
            <tr>
                <td>
                    Image Selection (resized):
                </td>
                <td>
                    <%# IfEmpty(GetDocumentUrl("test",""), "", GetImageByUrl(GetDocumentUrl("test",""), 100, 100, 100, Eval("ArticleTitle")))%>
                </td>
            </tr>
        </ItemTemplate>
    </asp:Repeater>
</table>

Code behind

public partial class CMSWebParts_RealInsurance_Common_LearningCentre_FeatureArticles : CMSAbstractWebPart
{
    protected CMSAbstractTransformation Helper;
    protected TreeProvider tree;

    protected void Page_Load(object sender, EventArgs e)
    {
        Helper = new CMSAbstractTransformation();
        
        UserInfo ui = UserInfoProvider.GetUserInfo(CMSContext.CurrentUser.UserID);
        tree = new TreeProvider(ui);

        TreeNode document = CMSContext.CurrentDocument;

        DataSet dsLandingFeatureArticles = tree.SelectNodes(CMSContext.CurrentSiteName, document.NodeAliasPath + "/Feature/%", CMSContext.CurrentDocumentCulture.CultureCode, true, "RealInsurance.Article", string.Empty, "NodeOrder", 1);
        if (dsLandingFeatureArticles != null)
        {            
            rprFeatureArticle.DataSource = dsLandingFeatureArticles;
            rprFeatureArticle.DataBind();
        }
    }
}