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copied!<p>Here is how I did it. It worked really well. I had a feature that created several list instances and provisioned the What's New web part. In the Feature Receiver, I looped through all of the list instances, indexed the Modified field, and then added the list to the web part:</p> <pre><code>private void ConfigureLists(SPWeb web, SPFeatureReceiverProperties properties) { List<Guid> ids = new List<Guid>(); SPElementDefinitionCollection elements = properties.Feature.Definition.GetElementDefinitions(new CultureInfo((int)web.Language, false)); foreach (SPElementDefinition element in elements) { if ("ListInstance" == element.ElementType) { XmlNode node = element.XmlDefinition; SPList list = web.Lists[node.Attributes["Title"].Value]; SPField field = list.Fields[SPBuiltInFieldId.Modified]; if (!field.Indexed) { field.Indexed = true; field.Update(); } ids.Add(list.ID); } } string targetConfig = string.Empty; foreach (Guid id in ids) { targetConfig += string.Format("'{0}',''\n", id); } SPFile file = web.GetFile("Pages/default.aspx"); file.CheckOut(); using (SPLimitedWebPartManager manager = file.GetLimitedWebPartManager(PersonalizationScope.Shared)) { WhatsNewWebPart webpart = null; foreach (System.Web.UI.WebControls.WebParts.WebPart eachWebPart in manager.WebParts) { webpart = eachWebPart as WhatsNewWebPart; if (null != webpart) { break; } } if (null != webpart) { webpart.TargetConfig = targetConfig; manager.SaveChanges(webpart); } } file.CheckIn("ConfigureWebParts"); file.Publish("ConfigureWebParts"); file.Approve("ConfigureWebParts"); } </code></pre>

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