Dynamic Data Binding and Image Url

[ali]

Hi

I using List<SiteDataItem> siteData = new List<SiteDataItem>(); datasource for RadTreeView. How can I add ImageUrl all RadTreeView node?

 DataTable dt = FoldersToTable();
        List<SiteDataItem> siteData = new List<SiteDataItem>();

        RadTreeNode myNod = new RadTreeNode();

        for (int i = 0; i < dt.Rows.Count; i++)
        {
            string Name = dt.Rows[i]["Name"].ToString();
            string FullName = dt.Rows[i]["FullName"].ToString();
            int ParentId = int.Parse(dt.Rows[i]["ParentId"].ToString());
            int ID = int.Parse(dt.Rows[i]["ID"].ToString());

            if (ID == ParentId)
            {
                Name = "<a  Target='main' href=../Mail/Mail/Inbox.aspx?folderName=" + HttpUtility.UrlEncode(Name) + ">" + mailCounts(Name, Name) + "</a>";
                siteData.Add(new SiteDataItem(ID, null, Name, ""));
            }
            else
            {
                Name = "<a Target='main' href=../Mail/Mail/Inbox.aspx?folderName=" + HttpUtility.UrlEncode(FullName) + ">" + mailCounts(FullName, Name) + "</a>";
                siteData.Add(new SiteDataItem(ID, ParentId, Name, ""));
            }
        }


        RadTreeView1.DataTextField = "Text";
        RadTreeView1.DataNavigateUrlField = "Url";
        RadTreeView1.DataFieldID = "ID";
        RadTreeView1.DataFieldParentID = "ParentID";
        RadTreeView1.DataSource = siteData;
        RadTreeView1.DataBind();